首页 > 最新文献

Structural Dynamics-Us最新文献

英文 中文
Phase field crystal models with applications to laser deposition: A review. 应用于激光沉积的相场晶体模型:综述。
IF 2.8 2区 物理与天体物理 Q1 Physics and Astronomy Pub Date : 2024-01-31 eCollection Date: 2024-01-01 DOI: 10.1063/4.0000226
Duncan Burns, Nikolas Provatas, Martin Grant

In this article, we address the application of phase field crystal (PFC) theory, a hybrid atomistic-continuum approach, for modeling nanostructure kinetics encountered in laser deposition. We first provide an overview of the PFC methodology, highlighting recent advances to incorporate phononic and heat transport mechanisms. To simulate laser heating, energy is deposited onto a number of polycrystalline, two-dimensional samples through the application of initial stochastic fluctuations. We first demonstrate the ability of the model to simulate plasticity and recrystallization events that follow laser heating in the isothermal limit. Importantly, we also show that sufficient kinetic energy can cause voiding, which serves to suppress shock propagation. We subsequently employ a newly developed thermo-density PFC theory, coined thermal field crystal (TFC), to investigate laser heating of polycrystalline samples under non-isothermal conditions. We observe that the latent heat of transition associated with ordering can lead to long lasting metastable structures and defects, with a healing rate linked to the thermal diffusion. Finally, we illustrate that the lattice temperature simulated by the TFC model is in qualitative agreement with predictions of conventional electron-phonon two-temperature models. We expect that our new TFC formalism can be useful for predicting transient structures that result from rapid laser heating and re-solidification processes.

在本文中,我们探讨了相场晶体 (PFC) 理论的应用,这是一种原子-连续混合方法,用于对激光沉积过程中遇到的纳米结构动力学进行建模。我们首先概述了 PFC 方法,重点介绍了将声子和热传输机制纳入其中的最新进展。为了模拟激光加热,通过应用初始随机波动将能量沉积到一些多晶二维样品上。我们首先展示了该模型模拟等温极限激光加热后塑性和再结晶事件的能力。重要的是,我们还证明了足够的动能可导致空化,从而抑制冲击波的传播。随后,我们采用新开发的热密度 PFC 理论(被称为热场晶体 (TFC))来研究非等温条件下多晶样品的激光加热。我们观察到,与有序化相关的转变潜热可导致持久的陨变结构和缺陷,其愈合率与热扩散相关。最后,我们说明了 TFC 模型模拟的晶格温度与传统电子-声子双温模型的预测结果在本质上是一致的。我们希望我们新的 TFC 形式主义能在预测快速激光加热和再凝固过程产生的瞬态结构方面发挥作用。
{"title":"Phase field crystal models with applications to laser deposition: A review.","authors":"Duncan Burns, Nikolas Provatas, Martin Grant","doi":"10.1063/4.0000226","DOIUrl":"10.1063/4.0000226","url":null,"abstract":"<p><p>In this article, we address the application of phase field crystal (PFC) theory, a hybrid atomistic-continuum approach, for modeling nanostructure kinetics encountered in laser deposition. We first provide an overview of the PFC methodology, highlighting recent advances to incorporate phononic and heat transport mechanisms. To simulate laser heating, energy is deposited onto a number of polycrystalline, two-dimensional samples through the application of initial stochastic fluctuations. We first demonstrate the ability of the model to simulate plasticity and recrystallization events that follow laser heating in the isothermal limit. Importantly, we also show that sufficient kinetic energy can cause voiding, which serves to suppress shock propagation. We subsequently employ a newly developed thermo-density PFC theory, coined thermal field crystal (TFC), to investigate laser heating of polycrystalline samples under non-isothermal conditions. We observe that the latent heat of transition associated with ordering can lead to long lasting metastable structures and defects, with a healing rate linked to the thermal diffusion. Finally, we illustrate that the lattice temperature simulated by the TFC model is in qualitative agreement with predictions of conventional electron-phonon two-temperature models. We expect that our new TFC formalism can be useful for predicting transient structures that result from rapid laser heating and re-solidification processes.</p>","PeriodicalId":48683,"journal":{"name":"Structural Dynamics-Us","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10869171/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139742323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Relativistic ultrafast electron diffraction at high repetition rates. 高重复率的相对论超快电子衍射。
IF 2.8 2区 物理与天体物理 Q1 Physics and Astronomy Pub Date : 2023-12-04 eCollection Date: 2023-11-01 DOI: 10.1063/4.0000203
K M Siddiqui, D B Durham, F Cropp, F Ji, S Paiagua, C Ophus, N C Andresen, L Jin, J Wu, S Wang, X Zhang, W You, M Murnane, M Centurion, X Wang, D S Slaughter, R A Kaindl, P Musumeci, A M Minor, D Filippetto

The ability to resolve the dynamics of matter on its native temporal and spatial scales constitutes a key challenge and convergent theme across chemistry, biology, and materials science. The last couple of decades have witnessed ultrafast electron diffraction (UED) emerge as one of the forefront techniques with the sensitivity to resolve atomic motions. Increasingly sophisticated UED instruments are being developed that are aimed at increasing the beam brightness in order to observe structural signatures, but so far they have been limited to low average current beams. Here, we present the technical design and capabilities of the HiRES (High Repetition-rate Electron Scattering) instrument, which blends relativistic electrons and high repetition rates to achieve orders of magnitude improvement in average beam current compared to the existing state-of-the-art instruments. The setup utilizes a novel electron source to deliver femtosecond duration electron pulses at up to MHz repetition rates for UED experiments. Instrument response function of sub-500 fs is demonstrated with < 100 fs time resolution targeted in future. We provide example cases of diffraction measurements on solid-state and gas-phase samples, including both micro- and nanodiffraction (featuring 100 nm beam size) modes, which showcase the potential of the instrument for novel UED experiments.

在其固有的时间和空间尺度上解决物质动力学的能力构成了化学、生物学和材料科学的关键挑战和融合主题。在过去的几十年里,超快电子衍射(UED)作为一种灵敏的原子运动解析技术出现了。越来越复杂的UED仪器正在开发,旨在提高光束亮度,以观察结构特征,但到目前为止,它们仅限于低平均电流光束。在这里,我们介绍了雇用(高重复率电子散射)仪器的技术设计和能力,它混合了相对论电子和高重复率,与现有的最先进的仪器相比,平均光束电流提高了几个数量级。该装置利用一种新型电子源,为UED实验提供高达MHz重复率的飞秒持续电子脉冲。演示了仪器在低于500fs的响应功能,并以未来< 100fs的时间分辨率为目标。我们提供了固体和气相样品的衍射测量实例,包括微衍射和纳米衍射(具有100 nm光束尺寸)模式,这展示了该仪器在新型UED实验中的潜力。
{"title":"Relativistic ultrafast electron diffraction at high repetition rates.","authors":"K M Siddiqui, D B Durham, F Cropp, F Ji, S Paiagua, C Ophus, N C Andresen, L Jin, J Wu, S Wang, X Zhang, W You, M Murnane, M Centurion, X Wang, D S Slaughter, R A Kaindl, P Musumeci, A M Minor, D Filippetto","doi":"10.1063/4.0000203","DOIUrl":"10.1063/4.0000203","url":null,"abstract":"<p><p>The ability to resolve the dynamics of matter on its native temporal and spatial scales constitutes a key challenge and convergent theme across chemistry, biology, and materials science. The last couple of decades have witnessed ultrafast electron diffraction (UED) emerge as one of the forefront techniques with the sensitivity to resolve atomic motions. Increasingly sophisticated UED instruments are being developed that are aimed at increasing the beam brightness in order to observe structural signatures, but so far they have been limited to low average current beams. Here, we present the technical design and capabilities of the HiRES (High Repetition-rate Electron Scattering) instrument, which blends relativistic electrons and high repetition rates to achieve orders of magnitude improvement in average beam current compared to the existing state-of-the-art instruments. The setup utilizes a novel electron source to deliver femtosecond duration electron pulses at up to MHz repetition rates for UED experiments. Instrument response function of sub-500 fs is demonstrated with < 100 fs time resolution targeted in future. We provide example cases of diffraction measurements on solid-state and gas-phase samples, including both micro- and nanodiffraction (featuring 100 nm beam size) modes, which showcase the potential of the instrument for novel UED experiments.</p>","PeriodicalId":48683,"journal":{"name":"Structural Dynamics-Us","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2023-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10697722/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138499779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Photodiode-based time zero determination for ultrafast electron microscopy. 用于超快电子显微镜的基于光电二极管的时间零点测定。
IF 2.8 2区 物理与天体物理 Q1 Physics and Astronomy Pub Date : 2023-11-06 eCollection Date: 2023-11-01 DOI: 10.1063/4.0000218
S T Kempers, S Borrelli, E R Kieft, H A van Doorn, P H A Mutsaers, O J Luiten

Pump-probe experiments in ultrafast electron microscopy require temporal overlap between the pump and probe pulses. Accurate measurements of the time delay between them allows for the determination of the time zero, the moment in time where both pulses perfectly overlap. In this work, we present the use of a photodiode-based alignment method for these time zero measurements. The cheap and easy-to-use device consists of a photodiode in a sample holder and enables us to temporally align individual, single-electron pulses with femtosecond laser pulses. In a first device, a temporal resolution of 24 ps is obtained, limited by the photodiode design. Future work will utilize a smaller photodiode with a lower capacitance, which will increase the temporal resolution and add spatial resolution as well. This upgrade will bring the method toward the micrometer and picosecond spatiotemporal resolution.

超快电子显微镜中的泵浦-探针实验需要泵浦脉冲和探针脉冲之间的时间重叠。精确测量它们之间的时间延迟可以确定时间零点,即两个脉冲完全重叠的时刻。在这项工作中,我们提出了使用基于光电二极管的对准方法进行这些时间零点测量。这种廉价易用的设备由样品支架中的光电二极管组成,使我们能够在时间上将单个单电子脉冲与飞秒激光脉冲对准。在第一器件中,由于光电二极管设计的限制,获得了24ps的时间分辨率。未来的工作将使用电容较低的较小光电二极管,这将提高时间分辨率并增加空间分辨率。这一升级将使该方法达到微米和皮秒的时空分辨率。
{"title":"Photodiode-based time zero determination for ultrafast electron microscopy.","authors":"S T Kempers, S Borrelli, E R Kieft, H A van Doorn, P H A Mutsaers, O J Luiten","doi":"10.1063/4.0000218","DOIUrl":"10.1063/4.0000218","url":null,"abstract":"<p><p>Pump-probe experiments in ultrafast electron microscopy require temporal overlap between the pump and probe pulses. Accurate measurements of the time delay between them allows for the determination of the time zero, the moment in time where both pulses perfectly overlap. In this work, we present the use of a photodiode-based alignment method for these time zero measurements. The cheap and easy-to-use device consists of a photodiode in a sample holder and enables us to temporally align individual, single-electron pulses with femtosecond laser pulses. In a first device, a temporal resolution of 24 ps is obtained, limited by the photodiode design. Future work will utilize a smaller photodiode with a lower capacitance, which will increase the temporal resolution and add spatial resolution as well. This upgrade will bring the method toward the micrometer and picosecond spatiotemporal resolution.</p>","PeriodicalId":48683,"journal":{"name":"Structural Dynamics-Us","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10629968/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71522981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Δ-learning strategy for interpretation of spectroscopic observables. 用于解释光谱可观察性的Δ-学习策略。
IF 2.8 2区 物理与天体物理 Q1 Physics and Astronomy Pub Date : 2023-11-06 eCollection Date: 2023-11-01 DOI: 10.1063/4.0000215
Luke Watson, Thomas Pope, Raphael M Jay, Ambar Banerjee, Philippe Wernet, Thomas J Penfold

Accurate computations of experimental observables are essential for interpreting the high information content held within x-ray spectra. However, for complicated systems this can be difficult, a challenge compounded when dynamics becomes important owing to the large number of calculations required to capture the time-evolving observable. While machine learning architectures have been shown to represent a promising approach for rapidly predicting spectral lineshapes, achieving simultaneously accurate and sufficiently comprehensive training data is challenging. Herein, we introduce Δ-learning for x-ray spectroscopy. Instead of directly learning the structure-spectrum relationship, the Δ-model learns the structure dependent difference between a higher and lower level of theory. Consequently, once developed these models can be used to translate spectral shapes obtained from lower levels of theory to mimic those corresponding to higher levels of theory. Ultimately, this achieves accurate simulations with a much reduced computational burden as only the lower level of theory is computed, while the model can instantaneously transform this to a spectrum equivalent to a higher level of theory. Our present model, demonstrated herein, learns the difference between TDDFT(BLYP) and TDDFT(B3LYP) spectra. Its effectiveness is illustrated using simulations of Rh L3-edge spectra tracking the C-H activation of octane by a cyclopentadienyl rhodium carbonyl complex.

实验可观测值的精确计算对于解释x射线光谱中的高信息含量至关重要。然而,对于复杂的系统来说,这可能很困难,当动力学变得重要时,由于需要大量的计算来捕捉时间演变的可观测值,这一挑战变得更加复杂。虽然机器学习架构已被证明是快速预测谱线形状的一种很有前途的方法,但同时获得准确和足够全面的训练数据是一项挑战。在这里,我们介绍了x射线光谱的Δ学习。Δ-模型不是直接学习结构-谱关系,而是学习较高和较低理论水平之间的结构相关差异。因此,一旦开发出这些模型,就可以用来转换从较低理论水平获得的光谱形状,以模拟与较高理论水平相对应的光谱形状。最终,这实现了精确的模拟,大大减少了计算负担,因为只计算较低水平的理论,而模型可以立即将其转换为相当于较高水平理论的频谱。我们目前的模型,在此演示,学习TDDFT(BLYP)和TDDFT(B3LYP)光谱之间的差异。通过模拟Rh L3边缘光谱跟踪环戊二烯基铑羰基络合物对辛烷的C-H活化,说明了其有效性。
{"title":"A Δ-learning strategy for interpretation of spectroscopic observables.","authors":"Luke Watson, Thomas Pope, Raphael M Jay, Ambar Banerjee, Philippe Wernet, Thomas J Penfold","doi":"10.1063/4.0000215","DOIUrl":"10.1063/4.0000215","url":null,"abstract":"<p><p>Accurate computations of experimental observables are essential for interpreting the high information content held within x-ray spectra. However, for complicated systems this can be difficult, a challenge compounded when dynamics becomes important owing to the large number of calculations required to capture the time-evolving observable. While machine learning architectures have been shown to represent a promising approach for rapidly predicting spectral lineshapes, achieving simultaneously accurate and sufficiently comprehensive training data is challenging. Herein, we introduce Δ-learning for x-ray spectroscopy. Instead of directly learning the structure-spectrum relationship, the Δ-model learns the structure dependent difference between a higher and lower level of theory. Consequently, once developed these models can be used to translate spectral shapes obtained from lower levels of theory to mimic those corresponding to higher levels of theory. Ultimately, this achieves accurate simulations with a much reduced computational burden as only the lower level of theory is computed, while the model can instantaneously transform this to a spectrum equivalent to a higher level of theory. Our present model, demonstrated herein, learns the difference between TDDFT(BLYP) and TDDFT(B3LYP) spectra. Its effectiveness is illustrated using simulations of Rh L<sub>3</sub>-edge spectra tracking the C-H activation of octane by a cyclopentadienyl rhodium carbonyl complex.</p>","PeriodicalId":48683,"journal":{"name":"Structural Dynamics-Us","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10629969/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71522979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Disentangling the evolution of electrons and holes in photoexcited ZnO nanoparticles. 解开光激发ZnO纳米颗粒中电子和空穴的演化。
IF 2.3 2区 物理与天体物理 Q3 CHEMISTRY, PHYSICAL Pub Date : 2023-11-03 eCollection Date: 2023-11-01 DOI: 10.1063/4.0000204
Christopher J Milne, Natalia Nagornova, Thomas Pope, Hui-Yuan Chen, Thomas Rossi, Jakub Szlachetko, Wojciech Gawelda, Alexander Britz, Tim B van Driel, Leonardo Sala, Simon Ebner, Tetsuo Katayama, Stephen H Southworth, Gilles Doumy, Anne Marie March, C Stefan Lehmann, Melanie Mucke, Denys Iablonskyi, Yoshiaki Kumagai, Gregor Knopp, Koji Motomura, Tadashi Togashi, Shigeki Owada, Makina Yabashi, Martin M Nielsen, Marek Pajek, Kiyoshi Ueda, Rafael Abela, Thomas J Penfold, Majed Chergui

The evolution of charge carriers in photoexcited room temperature ZnO nanoparticles in solution is investigated using ultrafast ultraviolet photoluminescence spectroscopy, ultrafast Zn K-edge absorption spectroscopy, and ab initio molecular dynamics (MD) simulations. The photoluminescence is excited at 4.66 eV, well above the band edge, and shows that electron cooling in the conduction band and exciton formation occur in <500 fs, in excellent agreement with theoretical predictions. The x-ray absorption measurements, obtained upon excitation close to the band edge at 3.49 eV, are sensitive to the migration and trapping of holes. They reveal that the 2 ps transient largely reproduces the previously reported transient obtained at 100 ps time delay in synchrotron studies. In addition, the x-ray absorption signal is found to rise in ∼1.4 ps, which we attribute to the diffusion of holes through the lattice prior to their trapping at singly charged oxygen vacancies. Indeed, the MD simulations show that impulsive trapping of holes induces an ultrafast expansion of the cage of Zn atoms in <200 fs, followed by an oscillatory response at a frequency of ∼100 cm-1, which corresponds to a phonon mode of the system involving the Zn sub-lattice.

利用超快紫外光致发光光谱、超快Zn K边吸收光谱和从头算分子动力学(MD)模拟研究了溶液中光激发室温ZnO纳米颗粒中电荷载流子的演化。光致发光在4.66激发 eV,远高于带边缘,并表明导带中的电子冷却和激子形成发生在-1中,这对应于涉及Zn亚晶格的系统的声子模式。
{"title":"Disentangling the evolution of electrons and holes in photoexcited ZnO nanoparticles.","authors":"Christopher J Milne, Natalia Nagornova, Thomas Pope, Hui-Yuan Chen, Thomas Rossi, Jakub Szlachetko, Wojciech Gawelda, Alexander Britz, Tim B van Driel, Leonardo Sala, Simon Ebner, Tetsuo Katayama, Stephen H Southworth, Gilles Doumy, Anne Marie March, C Stefan Lehmann, Melanie Mucke, Denys Iablonskyi, Yoshiaki Kumagai, Gregor Knopp, Koji Motomura, Tadashi Togashi, Shigeki Owada, Makina Yabashi, Martin M Nielsen, Marek Pajek, Kiyoshi Ueda, Rafael Abela, Thomas J Penfold, Majed Chergui","doi":"10.1063/4.0000204","DOIUrl":"10.1063/4.0000204","url":null,"abstract":"<p><p>The evolution of charge carriers in photoexcited room temperature ZnO nanoparticles in solution is investigated using ultrafast ultraviolet photoluminescence spectroscopy, ultrafast Zn K-edge absorption spectroscopy, and <i>ab initio</i> molecular dynamics (MD) simulations. The photoluminescence is excited at 4.66 eV, well above the band edge, and shows that electron cooling in the conduction band and exciton formation occur in <500 fs, in excellent agreement with theoretical predictions. The x-ray absorption measurements, obtained upon excitation close to the band edge at 3.49 eV, are sensitive to the migration and trapping of holes. They reveal that the 2 ps transient largely reproduces the previously reported transient obtained at 100 ps time delay in synchrotron studies. In addition, the x-ray absorption signal is found to rise in ∼1.4 ps, which we attribute to the diffusion of holes through the lattice prior to their trapping at singly charged oxygen vacancies. Indeed, the MD simulations show that impulsive trapping of holes induces an ultrafast expansion of the cage of Zn atoms in <200 fs, followed by an oscillatory response at a frequency of ∼100 cm<sup>-1</sup>, which corresponds to a phonon mode of the system involving the Zn sub-lattice.</p>","PeriodicalId":48683,"journal":{"name":"Structural Dynamics-Us","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10628992/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71522980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Non-thermal structural transformation of diamond driven by x-rays. x射线驱动下金刚石的非热结构转变。
IF 2.8 2区 物理与天体物理 Q1 Physics and Astronomy Pub Date : 2023-10-27 eCollection Date: 2023-09-01 DOI: 10.1063/4.0000193
Philip Heimann, Nicholas J Hartley, Ichiro Inoue, Victor Tkachenko, Andre Antoine, Fabien Dorchies, Roger Falcone, Jérôme Gaudin, Hauke Höppner, Yuichi Inubushi, Konrad J Kapcia, Hae Ja Lee, Vladimir Lipp, Paloma Martinez, Nikita Medvedev, Franz Tavella, Sven Toleikis, Makina Yabashi, Toshinori Yabuuchi, Jumpei Yamada, Beata Ziaja

Intense x-ray pulses can cause the non-thermal structural transformation of diamond. At the SACLA XFEL facility, pump x-ray pulses triggered this phase transition, and probe x-ray pulses produced diffraction patterns. Time delays were observed from 0 to 250 fs, and the x-ray dose varied from 0.9 to 8.0 eV/atom. The intensity of the (111), (220), and (311) diffraction peaks decreased with time, indicating a disordering of the crystal lattice. From a Debye-Waller analysis, the rms atomic displacements perpendicular to the (111) planes were observed to be significantly larger than those perpendicular to the (220) or (311) planes. At a long time delay of 33 ms, graphite (002) diffraction indicates that graphitization did occur above a threshold dose of 1.2 eV/atom. These experimental results are in qualitative agreement with XTANT+ simulations using a hybrid model based on density-functional tight-binding molecular dynamics.

强x射线脉冲可以引起金刚石的非热结构转变。在SACLA XFEL设施中,泵浦x射线脉冲触发了这种相变,探针x射线脉冲产生衍射图案。从0到250 fs观察到时间延迟,x射线剂量从0.9到8.0不等 eV/原子。(111)、(220)和(311)衍射峰的强度随着时间的推移而降低,表明晶格无序。根据Debye Waller分析,观察到垂直于(111)平面的均方根原子位移显著大于垂直于(220)或(311)平面的原子位移。在33的长时间延迟 ms,石墨(002)衍射表明石墨化确实发生在1.2的阈值剂量以上 eV/原子。这些实验结果与使用基于密度泛函紧密结合分子动力学的混合模型的XTANT+模拟在质量上一致。
{"title":"Non-thermal structural transformation of diamond driven by x-rays.","authors":"Philip Heimann,&nbsp;Nicholas J Hartley,&nbsp;Ichiro Inoue,&nbsp;Victor Tkachenko,&nbsp;Andre Antoine,&nbsp;Fabien Dorchies,&nbsp;Roger Falcone,&nbsp;Jérôme Gaudin,&nbsp;Hauke Höppner,&nbsp;Yuichi Inubushi,&nbsp;Konrad J Kapcia,&nbsp;Hae Ja Lee,&nbsp;Vladimir Lipp,&nbsp;Paloma Martinez,&nbsp;Nikita Medvedev,&nbsp;Franz Tavella,&nbsp;Sven Toleikis,&nbsp;Makina Yabashi,&nbsp;Toshinori Yabuuchi,&nbsp;Jumpei Yamada,&nbsp;Beata Ziaja","doi":"10.1063/4.0000193","DOIUrl":"https://doi.org/10.1063/4.0000193","url":null,"abstract":"<p><p>Intense x-ray pulses can cause the non-thermal structural transformation of diamond. At the SACLA XFEL facility, pump x-ray pulses triggered this phase transition, and probe x-ray pulses produced diffraction patterns. Time delays were observed from 0 to 250 fs, and the x-ray dose varied from 0.9 to 8.0 eV/atom. The intensity of the (111), (220), and (311) diffraction peaks decreased with time, indicating a disordering of the crystal lattice. From a Debye-Waller analysis, the rms atomic displacements perpendicular to the (111) planes were observed to be significantly larger than those perpendicular to the (220) or (311) planes. At a long time delay of 33 ms, graphite (002) diffraction indicates that graphitization did occur above a threshold dose of 1.2 eV/atom. These experimental results are in qualitative agreement with XTANT+ simulations using a hybrid model based on density-functional tight-binding molecular dynamics.</p>","PeriodicalId":48683,"journal":{"name":"Structural Dynamics-Us","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10613085/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71414817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Solution phase high repetition rate laser pump x-ray probe picosecond hard x-ray spectroscopy at the Stanford Synchrotron Radiation Lightsource. 斯坦福同步辐射光源的溶液相高重复率激光泵浦x射线探针皮秒硬x射线光谱。
IF 2.8 2区 物理与天体物理 Q1 Physics and Astronomy Pub Date : 2023-10-27 eCollection Date: 2023-09-01 DOI: 10.1063/4.0000207
Marco Reinhard, Dean Skoien, Jacob A Spies, Angel T Garcia-Esparza, Benjamin D Matson, Jeff Corbett, Kai Tian, James Safranek, Eduardo Granados, Matthew Strader, Kelly J Gaffney, Roberto Alonso-Mori, Thomas Kroll, Dimosthenis Sokaras

We present a dedicated end-station for solution phase high repetition rate (MHz) picosecond hard x-ray spectroscopy at beamline 15-2 of the Stanford Synchrotron Radiation Lightsource. A high-power ultrafast ytterbium-doped fiber laser is used to photoexcite the samples at a repetition rate of 640 kHz, while the data acquisition operates at the 1.28 MHz repetition rate of the storage ring recording data in an alternating on-off mode. The time-resolved x-ray measurements are enabled via gating the x-ray detectors with the 20 mA/70 ps camshaft bunch of SPEAR3, a mode available during the routine operations of the Stanford Synchrotron Radiation Lightsource. As a benchmark study, aiming to demonstrate the advantageous capabilities of this end-station, we have conducted picosecond Fe K-edge x-ray absorption spectroscopy on aqueous [FeII(phen)3]2+, a prototypical spin crossover complex that undergoes light-induced excited spin state trapping forming an electronic excited state with a 0.6-0.7 ns lifetime. In addition, we report transient Fe Kβ main line and valence-to-core x-ray emission spectra, showing a unique detection sensitivity and an excellent agreement with model spectra and density functional theory calculations, respectively. Notably, the achieved signal-to-noise ratio, the overall performance, and the routine availability of the developed end-station have enabled a systematic time-resolved science program using the monochromatic beam at the Stanford Synchrotron Radiation Lightsource.

我们在斯坦福同步辐射光源的光束线15-2上提出了一个用于溶液相高重复率(MHz)皮秒硬x射线光谱的专用终端站。用高功率超快掺镱光纤激光器以640的重复频率对样品进行了光激发 kHz,而数据采集工作在1.28 以交替开关模式记录数据的存储环的MHz重复率。时间分辨x射线测量是通过20 SPEAR3的mA/70ps凸轮轴束,这是斯坦福同步加速器辐射光源常规操作期间可用的模式。作为一项基准研究,旨在证明该终端站的优势能力,我们在水性[FeII(phen)3]2+上进行了皮秒Fe K边x射线吸收光谱,这是一种典型的自旋交叉复合物,经过光诱导的激发自旋态捕获,形成0.6-0.7的电子激发态 ns寿命。此外,我们报道了瞬态Fe Kβ主线和价核x射线发射光谱,分别显示出独特的探测灵敏度和与模型光谱和密度泛函理论计算的良好一致性。值得注意的是,所实现的信噪比、整体性能和所开发的终端站的常规可用性使斯坦福同步辐射光源能够使用单色光束进行系统的时间分辨科学计划。
{"title":"Solution phase high repetition rate laser pump x-ray probe picosecond hard x-ray spectroscopy at the Stanford Synchrotron Radiation Lightsource.","authors":"Marco Reinhard, Dean Skoien, Jacob A Spies, Angel T Garcia-Esparza, Benjamin D Matson, Jeff Corbett, Kai Tian, James Safranek, Eduardo Granados, Matthew Strader, Kelly J Gaffney, Roberto Alonso-Mori, Thomas Kroll, Dimosthenis Sokaras","doi":"10.1063/4.0000207","DOIUrl":"10.1063/4.0000207","url":null,"abstract":"<p><p>We present a dedicated end-station for solution phase high repetition rate (MHz) picosecond hard x-ray spectroscopy at beamline 15-2 of the Stanford Synchrotron Radiation Lightsource. A high-power ultrafast ytterbium-doped fiber laser is used to photoexcite the samples at a repetition rate of 640 kHz, while the data acquisition operates at the 1.28 MHz repetition rate of the storage ring recording data in an alternating on-off mode. The time-resolved x-ray measurements are enabled via gating the x-ray detectors with the 20 mA/70 ps camshaft bunch of SPEAR3, a mode available during the routine operations of the Stanford Synchrotron Radiation Lightsource. As a benchmark study, aiming to demonstrate the advantageous capabilities of this end-station, we have conducted picosecond Fe K-edge x-ray absorption spectroscopy on aqueous [Fe<sup>II</sup>(phen)<sub>3</sub>]<sup>2+</sup>, a prototypical spin crossover complex that undergoes light-induced excited spin state trapping forming an electronic excited state with a 0.6-0.7 ns lifetime. In addition, we report transient Fe Kβ main line and valence-to-core x-ray emission spectra, showing a unique detection sensitivity and an excellent agreement with model spectra and density functional theory calculations, respectively. Notably, the achieved signal-to-noise ratio, the overall performance, and the routine availability of the developed end-station have enabled a systematic time-resolved science program using the monochromatic beam at the Stanford Synchrotron Radiation Lightsource.</p>","PeriodicalId":48683,"journal":{"name":"Structural Dynamics-Us","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10613086/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71414818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electron population dynamics in resonant non-linear x-ray absorption in nickel at a free-electron laser. 自由电子激光下镍共振非线性x射线吸收中的电子布居动力学。
IF 2.8 2区 物理与天体物理 Q1 Physics and Astronomy Pub Date : 2023-10-11 eCollection Date: 2023-09-01 DOI: 10.1063/4.0000206
Robin Y Engel, Oliver Alexander, Kaan Atak, Uwe Bovensiepen, Jens Buck, Robert Carley, Michele Cascella, Valentin Chardonnet, Gheorghe Sorin Chiuzbaian, Christian David, Florian Döring, Andrea Eschenlohr, Natalia Gerasimova, Frank de Groot, Loïc Le Guyader, Oliver S Humphries, Manuel Izquierdo, Emmanuelle Jal, Adam Kubec, Tim Laarmann, Charles-Henri Lambert, Jan Lüning, Jonathan P Marangos, Laurent Mercadier, Giuseppe Mercurio, Piter S Miedema, Katharina Ollefs, Bastian Pfau, Benedikt Rösner, Kai Rossnagel, Nico Rothenbach, Andreas Scherz, Justine Schlappa, Markus Scholz, Jan O Schunck, Kiana Setoodehnia, Christian Stamm, Simone Techert, Sam M Vinko, Heiko Wende, Alexander A Yaroslavtsev, Zhong Yin, Martin Beye

Free-electron lasers provide bright, ultrashort, and monochromatic x-ray pulses, enabling novel spectroscopic measurements not only with femtosecond temporal resolution: The high fluence of their x-ray pulses can also easily enter the regime of the non-linear x-ray-matter interaction. Entering this regime necessitates a rigorous analysis and reliable prediction of the relevant non-linear processes for future experiment designs. Here, we show non-linear changes in the L3-edge absorption of metallic nickel thin films, measured with fluences up to 60 J/cm2. We present a simple but predictive rate model that quantitatively describes spectral changes based on the evolution of electronic populations within the pulse duration. Despite its simplicity, the model reaches good agreement with experimental results over more than three orders of magnitude in fluence, while providing a straightforward understanding of the interplay of physical processes driving the non-linear changes. Our findings provide important insights for the design and evaluation of future high-fluence free-electron laser experiments and contribute to the understanding of non-linear electron dynamics in x-ray absorption processes in solids at the femtosecond timescale.

自由电子激光器提供明亮、超短和单色的x射线脉冲,不仅能够以飞秒时间分辨率进行新的光谱测量:其x射线脉冲的高通量也可以很容易地进入非线性x射线-射线相互作用的状态。进入这一制度需要对未来实验设计的相关非线性过程进行严格的分析和可靠的预测。在这里,我们展示了金属镍薄膜的L3边缘吸收的非线性变化,用高达60的通量测量 J/cm2。我们提出了一个简单但可预测的速率模型,该模型基于脉冲持续时间内电子布居的演变来定量描述光谱变化。尽管该模型简单,但在通量超过三个数量级的情况下,它与实验结果达成了良好的一致性,同时对驱动非线性变化的物理过程的相互作用提供了直接的理解。我们的发现为未来高通量自由电子激光实验的设计和评估提供了重要的见解,并有助于理解飞秒时间尺度下固体x射线吸收过程中的非线性电子动力学。
{"title":"Electron population dynamics in resonant non-linear x-ray absorption in nickel at a free-electron laser.","authors":"Robin Y Engel,&nbsp;Oliver Alexander,&nbsp;Kaan Atak,&nbsp;Uwe Bovensiepen,&nbsp;Jens Buck,&nbsp;Robert Carley,&nbsp;Michele Cascella,&nbsp;Valentin Chardonnet,&nbsp;Gheorghe Sorin Chiuzbaian,&nbsp;Christian David,&nbsp;Florian Döring,&nbsp;Andrea Eschenlohr,&nbsp;Natalia Gerasimova,&nbsp;Frank de Groot,&nbsp;Loïc Le Guyader,&nbsp;Oliver S Humphries,&nbsp;Manuel Izquierdo,&nbsp;Emmanuelle Jal,&nbsp;Adam Kubec,&nbsp;Tim Laarmann,&nbsp;Charles-Henri Lambert,&nbsp;Jan Lüning,&nbsp;Jonathan P Marangos,&nbsp;Laurent Mercadier,&nbsp;Giuseppe Mercurio,&nbsp;Piter S Miedema,&nbsp;Katharina Ollefs,&nbsp;Bastian Pfau,&nbsp;Benedikt Rösner,&nbsp;Kai Rossnagel,&nbsp;Nico Rothenbach,&nbsp;Andreas Scherz,&nbsp;Justine Schlappa,&nbsp;Markus Scholz,&nbsp;Jan O Schunck,&nbsp;Kiana Setoodehnia,&nbsp;Christian Stamm,&nbsp;Simone Techert,&nbsp;Sam M Vinko,&nbsp;Heiko Wende,&nbsp;Alexander A Yaroslavtsev,&nbsp;Zhong Yin,&nbsp;Martin Beye","doi":"10.1063/4.0000206","DOIUrl":"10.1063/4.0000206","url":null,"abstract":"<p><p>Free-electron lasers provide bright, ultrashort, and monochromatic x-ray pulses, enabling novel spectroscopic measurements not only with femtosecond temporal resolution: The high fluence of their x-ray pulses can also easily enter the regime of the non-linear x-ray-matter interaction. Entering this regime necessitates a rigorous analysis and reliable prediction of the relevant non-linear processes for future experiment designs. Here, we show non-linear changes in the <math><mrow><msub><mi>L</mi><mn>3</mn></msub></mrow></math>-edge absorption of metallic nickel thin films, measured with fluences up to 60 J/cm<sup>2</sup>. We present a simple but predictive rate model that quantitatively describes spectral changes based on the evolution of electronic populations within the pulse duration. Despite its simplicity, the model reaches good agreement with experimental results over more than three orders of magnitude in fluence, while providing a straightforward understanding of the interplay of physical processes driving the non-linear changes. Our findings provide important insights for the design and evaluation of future high-fluence free-electron laser experiments and contribute to the understanding of non-linear electron dynamics in x-ray absorption processes in solids at the femtosecond timescale.</p>","PeriodicalId":48683,"journal":{"name":"Structural Dynamics-Us","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2023-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10576398/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41242005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Isotope effects in dynamics of water isotopologues induced by core ionization at an x-ray free-electron laser. x射线自由电子激光核心电离引起的水同位素动力学中的同位素效应。
IF 2.8 2区 物理与天体物理 Q1 Physics and Astronomy Pub Date : 2023-10-03 eCollection Date: 2023-09-01 DOI: 10.1063/4.0000197
R Guillemin, L Inhester, M Ilchen, T Mazza, R Boll, Th Weber, S Eckart, P Grychtol, N Rennhack, T Marchenko, N Velasquez, O Travnikova, I Ismail, J Niskanen, E Kukk, F Trinter, M Gisselbrecht, R Feifel, G Sansone, D Rolles, M Martins, M Meyer, M Simon, R Santra, T Pfeifer, T Jahnke, M N Piancastelli

Dynamical response of water exposed to x-rays is of utmost importance in a wealth of science areas. We exposed isolated water isotopologues to short x-ray pulses from a free-electron laser and detected momenta of all produced ions in coincidence. By combining experimental results and theoretical modeling, we identify significant structural dynamics with characteristic isotope effects in H2O2+, D2O2+, and HDO2+, such as asymmetric bond elongation and bond-angle opening, leading to two-body or three-body fragmentation on a timescale of a few femtoseconds. A method to disentangle the sequences of events taking place upon the consecutive absorption of two x-ray photons is described. The obtained deep look into structural properties and dynamics of dissociating water isotopologues provides essential insights into the underlying mechanisms.

暴露于x射线的水的动力学响应在许多科学领域中至关重要。我们将分离的水同位素暴露于自由电子激光器的短x射线脉冲中,并检测到所有产生的离子的动量。通过结合实验结果和理论建模,我们确定了在H2O2+、D2O2+和HDO2+中具有特征同位素效应的显著结构动力学,如不对称键延伸和键角打开,导致在几个飞秒的时间尺度上发生三体或三体碎裂。描述了一种解开连续吸收两个x射线光子时发生的事件序列的方法。对离解水同位素的结构性质和动力学的深入研究为潜在机制提供了重要的见解。
{"title":"Isotope effects in dynamics of water isotopologues induced by core ionization at an x-ray free-electron laser.","authors":"R Guillemin,&nbsp;L Inhester,&nbsp;M Ilchen,&nbsp;T Mazza,&nbsp;R Boll,&nbsp;Th Weber,&nbsp;S Eckart,&nbsp;P Grychtol,&nbsp;N Rennhack,&nbsp;T Marchenko,&nbsp;N Velasquez,&nbsp;O Travnikova,&nbsp;I Ismail,&nbsp;J Niskanen,&nbsp;E Kukk,&nbsp;F Trinter,&nbsp;M Gisselbrecht,&nbsp;R Feifel,&nbsp;G Sansone,&nbsp;D Rolles,&nbsp;M Martins,&nbsp;M Meyer,&nbsp;M Simon,&nbsp;R Santra,&nbsp;T Pfeifer,&nbsp;T Jahnke,&nbsp;M N Piancastelli","doi":"10.1063/4.0000197","DOIUrl":"10.1063/4.0000197","url":null,"abstract":"<p><p>Dynamical response of water exposed to x-rays is of utmost importance in a wealth of science areas. We exposed isolated water isotopologues to short x-ray pulses from a free-electron laser and detected momenta of all produced ions in coincidence. By combining experimental results and theoretical modeling, we identify significant structural dynamics with characteristic isotope effects in H<sub>2</sub>O<sup>2+</sup>, D<sub>2</sub>O<sup>2+</sup>, and HDO<sup>2+</sup>, such as asymmetric bond elongation and bond-angle opening, leading to two-body or three-body fragmentation on a timescale of a few femtoseconds. A method to disentangle the sequences of events taking place upon the consecutive absorption of two x-ray photons is described. The obtained deep look into structural properties and dynamics of dissociating water isotopologues provides essential insights into the underlying mechanisms.</p>","PeriodicalId":48683,"journal":{"name":"Structural Dynamics-Us","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10550338/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41159729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
RF acceleration of ultracold electron bunches. 超冷电子束的射频加速。
IF 2.8 2区 物理与天体物理 Q1 Physics and Astronomy Pub Date : 2023-10-03 eCollection Date: 2023-09-01 DOI: 10.1063/4.0000200
D F J Nijhof, T C H de Raadt, J V Huijts, J G H Franssen, P H A Mutsaers, O J Luiten

The ultrafast and ultracold electron source, based on laser cooling and trapping of atomic gas and its subsequent near-threshold two-step photoionization, is capable of generating electron bunches with a high transverse brightness at energies of roughly 10 keV. This paper investigates the possibility of increasing the range of applications of this source by accelerating the bunch using radio frequency electromagnetic fields. Bunch energies up to 35 keV are measured by analyzing the diffraction patterns generated from a mono-crystalline gold sample. It is found that the normalized transverse emittance is largely preserved during acceleration.

超快超冷电子源基于原子气体的激光冷却和捕获及其随后的近阈值两步光电离,能够在大约10的能量下产生具有高横向亮度的电子束 keV。本文研究了通过使用射频电磁场加速束来增加该源应用范围的可能性。束能量高达35 keV是通过分析由单晶金样品产生的衍射图案来测量的。研究发现,在加速过程中,归一化横向发射度基本保持不变。
{"title":"RF acceleration of ultracold electron bunches.","authors":"D F J Nijhof,&nbsp;T C H de Raadt,&nbsp;J V Huijts,&nbsp;J G H Franssen,&nbsp;P H A Mutsaers,&nbsp;O J Luiten","doi":"10.1063/4.0000200","DOIUrl":"10.1063/4.0000200","url":null,"abstract":"<p><p>The ultrafast and ultracold electron source, based on laser cooling and trapping of atomic gas and its subsequent near-threshold two-step photoionization, is capable of generating electron bunches with a high transverse brightness at energies of roughly 10 keV. This paper investigates the possibility of increasing the range of applications of this source by accelerating the bunch using radio frequency electromagnetic fields. Bunch energies up to 35 keV are measured by analyzing the diffraction patterns generated from a mono-crystalline gold sample. It is found that the normalized transverse emittance is largely preserved during acceleration.</p>","PeriodicalId":48683,"journal":{"name":"Structural Dynamics-Us","volume":null,"pages":null},"PeriodicalIF":2.8,"publicationDate":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10550337/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41143102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
Structural Dynamics-Us
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1