Renu Yadav, Saroj Poudyal, Bubunu Biswal, Ramesh Rajarapu, Prahalad Kanti Barman, Kostya S. Novoselov, Abhishek Misra
Memristive devices based on layered materials have the potential to enable low power electronics with ultra-fast operations toward the development of next generation memory and computing technologies. Memristor performance and switching behavior crucially depend on the switching matrix and on the type of electrodes used. In this work, we investigate the effect of different electrodes in 1D MoO2–MoS2 core shell nanowire memristors by highlighting their role in achieving distinct switching behavior. Analog and digital resistive switching are realized with carbon based passive (multi-layer graphene and multiwall carbon nanotube) and 3D active metal (silver and nickel) electrodes, respectively. Temperature dependent electrical transport studies of the conducting filament down to cryogenic temperatures reveal its semiconducting and metallic nature for passive and active top electrodes, respectively. These investigations shed light on the physics of the filament formation and provide a knob to design and develop the memristors with specific switching characteristics for desired end uses.
{"title":"Investigation of resistive switching behavior driven by active and passive electrodes in MoO2–MoS2 core shell nanowire memristors","authors":"Renu Yadav, Saroj Poudyal, Bubunu Biswal, Ramesh Rajarapu, Prahalad Kanti Barman, Kostya S. Novoselov, Abhishek Misra","doi":"10.1063/5.0233927","DOIUrl":"https://doi.org/10.1063/5.0233927","url":null,"abstract":"Memristive devices based on layered materials have the potential to enable low power electronics with ultra-fast operations toward the development of next generation memory and computing technologies. Memristor performance and switching behavior crucially depend on the switching matrix and on the type of electrodes used. In this work, we investigate the effect of different electrodes in 1D MoO2–MoS2 core shell nanowire memristors by highlighting their role in achieving distinct switching behavior. Analog and digital resistive switching are realized with carbon based passive (multi-layer graphene and multiwall carbon nanotube) and 3D active metal (silver and nickel) electrodes, respectively. Temperature dependent electrical transport studies of the conducting filament down to cryogenic temperatures reveal its semiconducting and metallic nature for passive and active top electrodes, respectively. These investigations shed light on the physics of the filament formation and provide a knob to design and develop the memristors with specific switching characteristics for desired end uses.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"7 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142670406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tianyou Luo, Yinuo Zhang, Zhipeng Chen, Kaibin Xu, Peidong Ouyang, Han Hu, Chenyang Li, Yuhan Zhu, Xinyan Yi, Guoqiang Li
To satisfy the strict demands of 5G radio frequency communication, we propose high-quality, flexible temperature-compensated single-crystalline AlN film bulk acoustic wave resonators (TC-SABARs) based on a 6-inch sapphire substrate. An AlGaN sacrificial layer and a 600-nm-thick single-crystalline AlN epitaxial layer are deposited on a sapphire substrate by metal organic chemical vapor deposition (MOCVD). Two types of TC-SABARs are fabricated and their performances are compared with published results. The results indicate that one of the TC-SABARs has a maximum Bode Q of 3406, an effective coefficient (Keff2) of 6.21%, and a temperature coefficient of frequency (TCF) of −9.5 ppm/°C. The other TC-SABAR exhibits a maximum Bode Q of 3022, a Keff2 of 5.99%, and a TCF of +0.7 ppm/°C. This performance can be attributed to the high-quality single-crystalline AlN film and the temperature-compensation structure with nonmetallic flip-chip bonding film transfer process and a thick SiO2 layer.
{"title":"High-quality temperature-complementary bulk acoustic wave resonators fabricated with strippable single-crystalline AlN films grown on sapphire","authors":"Tianyou Luo, Yinuo Zhang, Zhipeng Chen, Kaibin Xu, Peidong Ouyang, Han Hu, Chenyang Li, Yuhan Zhu, Xinyan Yi, Guoqiang Li","doi":"10.1063/5.0231483","DOIUrl":"https://doi.org/10.1063/5.0231483","url":null,"abstract":"To satisfy the strict demands of 5G radio frequency communication, we propose high-quality, flexible temperature-compensated single-crystalline AlN film bulk acoustic wave resonators (TC-SABARs) based on a 6-inch sapphire substrate. An AlGaN sacrificial layer and a 600-nm-thick single-crystalline AlN epitaxial layer are deposited on a sapphire substrate by metal organic chemical vapor deposition (MOCVD). Two types of TC-SABARs are fabricated and their performances are compared with published results. The results indicate that one of the TC-SABARs has a maximum Bode Q of 3406, an effective coefficient (Keff2) of 6.21%, and a temperature coefficient of frequency (TCF) of −9.5 ppm/°C. The other TC-SABAR exhibits a maximum Bode Q of 3022, a Keff2 of 5.99%, and a TCF of +0.7 ppm/°C. This performance can be attributed to the high-quality single-crystalline AlN film and the temperature-compensation structure with nonmetallic flip-chip bonding film transfer process and a thick SiO2 layer.","PeriodicalId":8094,"journal":{"name":"Applied Physics Letters","volume":"18 1","pages":""},"PeriodicalIF":4.0,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142670409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-18DOI: 10.1051/0004-6361/202450879
Xiandi Zeng, Hong Tang, Xiongyao Li, Chuanjiao Zhou, Sen Hu, Xiaojia Zeng, Wen Yu, Yuanyun Wen, Yanxue Wu, Bing Mo, Jianzhong Liu, Yong Fu
Context. The solar wind protons implanted in silicate material and combined with oxygen are considered crucial for forming OH/H2O on the Moon and other airless bodies. This process may also have contributed to hydrogen delivery to planetary interiors through the accretion of micrometre-sized dust and planetesimals during early stages of the Solar System.Aims. This paper experimentally investigates the depth distribution of solar wind protons in silicate materials and explores the mechanisms that influence this profile.Methods. We simulated solar wind irradiation by implanting 3 keV D2+ ions in three typical silicates (olivine, pyroxene, and plagio-clase) at a fluence of ~1.4 × 1017 ions/cm2. Fourier transform infrared spectroscopy was used to analyse chemical bond changes, while transmission electron microscopy (TEM) characterised microstructural modifications. Nanoscale secondary ion mass spectrometry (NanoSIMS) was employed to measure the D/16O ratio and determine the depth distribution of implanted deuterium.Results. The newly produced OD band (at 2400-2800 cm−1 ) in the infrared spectrum reveals the formation of O–D bonds in the irradiated silicates. The TEM and NanoSIMS results suggest that over 73% of the implanted D accumulated in fully amorphous rims with a depth of 70 nm, while 25% extended inwards to ~190 nanometres, resulting in partial amorphisation. The distribution of these deuterium particles is governed by the collision processes of the implanted particles, which involve factors such as initial energy loss, cascade collisions, and channelling effects. Furthermore, up to 2% of the total implanted D penetrated the intact lattice via diffusion, reaching depths ranging from hundreds of nanometres to several micrometres.Conclusions. Our results suggest that implanted solar wind protons can be retained in silicate interiors, which may significantly affect the hydrogen isotopic composition in extraterrestrial samples and imply an important source of hydrogen during the formation of terrestrial planets.
{"title":"Depth profiling of implanted D+ in silicates: Contribution of solar wind protons to water in the Moon and terrestrial planets","authors":"Xiandi Zeng, Hong Tang, Xiongyao Li, Chuanjiao Zhou, Sen Hu, Xiaojia Zeng, Wen Yu, Yuanyun Wen, Yanxue Wu, Bing Mo, Jianzhong Liu, Yong Fu","doi":"10.1051/0004-6361/202450879","DOIUrl":"https://doi.org/10.1051/0004-6361/202450879","url":null,"abstract":"<i>Context<i/>. The solar wind protons implanted in silicate material and combined with oxygen are considered crucial for forming OH/H<sub>2<sub/>O on the Moon and other airless bodies. This process may also have contributed to hydrogen delivery to planetary interiors through the accretion of micrometre-sized dust and planetesimals during early stages of the Solar System.<i>Aims<i/>. This paper experimentally investigates the depth distribution of solar wind protons in silicate materials and explores the mechanisms that influence this profile.<i>Methods<i/>. We simulated solar wind irradiation by implanting 3 keV D<sub>2<sub/><sup>+<sup/> ions in three typical silicates (olivine, pyroxene, and plagio-clase) at a fluence of ~1.4 × 10<sup>17<sup/> ions/cm<sup>2<sup/>. Fourier transform infrared spectroscopy was used to analyse chemical bond changes, while transmission electron microscopy (TEM) characterised microstructural modifications. Nanoscale secondary ion mass spectrometry (NanoSIMS) was employed to measure the D/<sup>16<sup/>O ratio and determine the depth distribution of implanted deuterium.<i>Results<i/>. The newly produced OD band (at 2400-2800 cm<sup>−1<sup/> ) in the infrared spectrum reveals the formation of O–D bonds in the irradiated silicates. The TEM and NanoSIMS results suggest that over 73% of the implanted D accumulated in fully amorphous rims with a depth of 70 nm, while 25% extended inwards to ~190 nanometres, resulting in partial amorphisation. The distribution of these deuterium particles is governed by the collision processes of the implanted particles, which involve factors such as initial energy loss, cascade collisions, and channelling effects. Furthermore, up to 2% of the total implanted D penetrated the intact lattice via diffusion, reaching depths ranging from hundreds of nanometres to several micrometres.<i>Conclusions<i/>. Our results suggest that implanted solar wind protons can be retained in silicate interiors, which may significantly affect the hydrogen isotopic composition in extraterrestrial samples and imply an important source of hydrogen during the formation of terrestrial planets.","PeriodicalId":8571,"journal":{"name":"Astronomy & Astrophysics","volume":"62 1","pages":""},"PeriodicalIF":6.5,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142670327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The precision of 10Be measurements by accelerator mass spectrometry (AMS) relies on the intensity of BeO- currents from Cs-sputtered samples. We conducted an experiment to determine the effect of cathode materials on BeO- currents for AMS measurements. The peak currents of stainless-steel cathodes were slightly higher than those of Cu cathodes, indicating the benefits of using the former for measuring low-level samples. However, this slight difference may be counteracted by longer measurement times. The difference in the BeO- currents is attributed to competitive ionization between BeO and cathode materials. Fe, the primary element in stainless steel, has a significantly lower electron affinity compared to Cu, resulting in reduced electron consumption for BeO ionization. This phenomenon mirrors the effect of metal-matrix selection on BeO- current intensity. These results are relevant for optimizing beam currents of other nuclides in AMS measurements and are beneficial for studies conducted using SNICS ion sources.
{"title":"Influence of cathode materials on BeO currents in cosmogenic 10Be measurements using a SNICS ion source and accelerator mass spectrometry","authors":"Atsunori Nakamura , Takeyasu Yamagata , Hiroyuki Matsuzaki","doi":"10.1016/j.nimb.2024.165562","DOIUrl":"10.1016/j.nimb.2024.165562","url":null,"abstract":"<div><div>The precision of <sup>10</sup>Be measurements by accelerator mass spectrometry (AMS) relies on the intensity of BeO<sup>-</sup> currents from Cs-sputtered samples. We conducted an experiment to determine the effect of cathode materials on BeO<sup>-</sup> currents for AMS measurements. The peak currents of stainless-steel cathodes were slightly higher than those of Cu cathodes, indicating the benefits of using the former for measuring low-level samples. However, this slight difference may be counteracted by longer measurement times. The difference in the BeO<sup>-</sup> currents is attributed to competitive ionization between BeO and cathode materials. Fe, the primary element in stainless steel, has a significantly lower electron affinity compared to Cu, resulting in reduced electron consumption for BeO ionization. This phenomenon mirrors the effect of metal-matrix selection on BeO<sup>-</sup> current intensity. These results are relevant for optimizing beam currents of other nuclides in AMS measurements and are beneficial for studies conducted using SNICS ion sources.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"558 ","pages":"Article 165562"},"PeriodicalIF":1.4,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}
Pub Date : 2024-11-17DOI: 10.1007/s00601-024-01966-6
Faizuddin Ahmed, Abdelmalek Bouzenada
In this paper, we investigate the quantum dynamics of scalar and oscillator fields in a topological defect space-time background under the influence of rainbow gravity’s. The rainbow gravity’s are introduced into the considered cosmological space-time geometry by replacing the temporal part (dt rightarrow frac{dt}{mathcal {F}(chi )}) and the spatial part (dx^i rightarrow frac{dx^i}{mathcal {H} (chi )}), where (mathcal {F}, mathcal {H}) are the rainbow functions and (0 le chi =|E|/E_p <1) is the dimensionless parameter. We derived the radial equation of the Klein–Gordon equation and its oscillator equation under rainbow gravity’s in topological space-time. To obtain eigenvalue of the quantum systems under investigations, we set the rainbow functions (mathcal {F}(chi )=1) and (mathcal {H}(chi )=sqrt{1-beta ,chi ^p}), where (p=1,2). We solve the radial equations through special functions using these rainbow functions and analyze the results. In fact, it is shown that the presence of cosmological constant, the topological defect parameter (alpha ), and the rainbow parameter (beta ) modified the energy spectrum of scalar and oscillator fields in comparison to the results obtained in flat space.
{"title":"Rainbow Gravity Effects on Relativistic Quantum Oscillator Field in a Topological Defect Cosmological Space-Time","authors":"Faizuddin Ahmed, Abdelmalek Bouzenada","doi":"10.1007/s00601-024-01966-6","DOIUrl":"10.1007/s00601-024-01966-6","url":null,"abstract":"<div><p>In this paper, we investigate the quantum dynamics of scalar and oscillator fields in a topological defect space-time background under the influence of rainbow gravity’s. The rainbow gravity’s are introduced into the considered cosmological space-time geometry by replacing the temporal part <span>(dt rightarrow frac{dt}{mathcal {F}(chi )})</span> and the spatial part <span>(dx^i rightarrow frac{dx^i}{mathcal {H} (chi )})</span>, where <span>(mathcal {F}, mathcal {H})</span> are the rainbow functions and <span>(0 le chi =|E|/E_p <1)</span> is the dimensionless parameter. We derived the radial equation of the Klein–Gordon equation and its oscillator equation under rainbow gravity’s in topological space-time. To obtain eigenvalue of the quantum systems under investigations, we set the rainbow functions <span>(mathcal {F}(chi )=1)</span> and <span>(mathcal {H}(chi )=sqrt{1-beta ,chi ^p})</span>, where <span>(p=1,2)</span>. We solve the radial equations through special functions using these rainbow functions and analyze the results. In fact, it is shown that the presence of cosmological constant, the topological defect parameter <span>(alpha )</span>, and the rainbow parameter <span>(beta )</span> modified the energy spectrum of scalar and oscillator fields in comparison to the results obtained in flat space.\u0000</p></div>","PeriodicalId":556,"journal":{"name":"Few-Body Systems","volume":"65 4","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lingzhi Peng, Liqiang Liu, Xiaoni Li, Lihong Hong, Zhiyuan Li
Lithium niobate thin film (LNTF) is a promising platform for ultra-low loss nonlinear integrated photonics. Here, the simultaneous generation of second harmonic wave (SHW) and dispersive wave (DW) are demonstrated in a single LNTF under the pump of a femtosecond pulse laser, with a conversion efficiency exceeding 25%. The second harmonic generation (SHG) uses the modal phase matching mechanism based on the second-order nonlinear effect, while the DW generation is based on the perturbations of soliton dynamics caused by self-phase modulation and higher-order dispersion. Notably, significant and symmetrical SHW and DW patterns are observed, which exhibit strong spatial dispersion properties. A comprehensive analysis of the phase-matching conditions are conducted for SHG and DW generation and provide a clear elucidation of the spectral properties of different regions of the emitted light patterns. Additionally, the evolution of the pump light in LNTF is thoroughly investigated, and the solutions of the generalized Schrödinger equation are in good agreement with these experimental results. This work sheds new light on the rich physics of nonlinear optical interactions on LNTF, and by utilizing the synergistic effect of second-order and third-order nonlinear effects, this study anticipates achieving efficient and high energy on-chip broadband frequency conversion and supercontinuum generation across octaves.
{"title":"Efficient Simultaneous Second Harmonic Generation and Dispersive Wave Generation in Lithium Niobate Thin Film","authors":"Lingzhi Peng, Liqiang Liu, Xiaoni Li, Lihong Hong, Zhiyuan Li","doi":"10.1002/lpor.202400335","DOIUrl":"https://doi.org/10.1002/lpor.202400335","url":null,"abstract":"Lithium niobate thin film (LNTF) is a promising platform for ultra-low loss nonlinear integrated photonics. Here, the simultaneous generation of second harmonic wave (SHW) and dispersive wave (DW) are demonstrated in a single LNTF under the pump of a femtosecond pulse laser, with a conversion efficiency exceeding 25%. The second harmonic generation (SHG) uses the modal phase matching mechanism based on the second-order nonlinear effect, while the DW generation is based on the perturbations of soliton dynamics caused by self-phase modulation and higher-order dispersion. Notably, significant and symmetrical SHW and DW patterns are observed, which exhibit strong spatial dispersion properties. A comprehensive analysis of the phase-matching conditions are conducted for SHG and DW generation and provide a clear elucidation of the spectral properties of different regions of the emitted light patterns. Additionally, the evolution of the pump light in LNTF is thoroughly investigated, and the solutions of the generalized Schrödinger equation are in good agreement with these experimental results. This work sheds new light on the rich physics of nonlinear optical interactions on LNTF, and by utilizing the synergistic effect of second-order and third-order nonlinear effects, this study anticipates achieving efficient and high energy on-chip broadband frequency conversion and supercontinuum generation across octaves.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"76 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142645859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jianxing Zhou, Yuhang Peng, Jiajie Chen, Xiaoqi Dai, Yili Zhong, Peng Du, Zhengtian Jin, Yinyue Ji, Yuye Wang, Ho Pui Ho, Junle Qu, Yonghong Shao
Colloidal photonic crystals (CPCs) are extensively utilized in nanoscale light manipulation due to their periodic dielectric structure. However, achieving spatial reconfigurability in CPCs remains a significant challenge, despite its importance for broader photonic applications in colloidal science. In this study, an optically induced thermoelectric field is generated by adding ionic surfactants to the solution, leading to the efficient formation of tightly assembled nanoparticles that exhibit the characteristics of CPC, which is termed optothermo-CPC. Specifically, this CPC exhibits excellent spatial reconfigurability through the tuning of the optically induced thermoelectric field. This allows for the remote control of its position and shape, in a real-time and high-precision manner. Additionally, by changing the particle size, it is possible to tune the transmission spectrum and color. Additionally, optothermo-CPC can navigate obstacles and possess a robust self-healing ability. These highly adaptable and reconfigurable properties endow CPCs with significant potential for various photonic applications within complex fluidic environments.
{"title":"Optothermal-Enabled Reconfigurable Colloidal Photonic Crystals for Color and Spectrum Manipulation","authors":"Jianxing Zhou, Yuhang Peng, Jiajie Chen, Xiaoqi Dai, Yili Zhong, Peng Du, Zhengtian Jin, Yinyue Ji, Yuye Wang, Ho Pui Ho, Junle Qu, Yonghong Shao","doi":"10.1002/lpor.202400889","DOIUrl":"https://doi.org/10.1002/lpor.202400889","url":null,"abstract":"Colloidal photonic crystals (CPCs) are extensively utilized in nanoscale light manipulation due to their periodic dielectric structure. However, achieving spatial reconfigurability in CPCs remains a significant challenge, despite its importance for broader photonic applications in colloidal science. In this study, an optically induced thermoelectric field is generated by adding ionic surfactants to the solution, leading to the efficient formation of tightly assembled nanoparticles that exhibit the characteristics of CPC, which is termed optothermo-CPC. Specifically, this CPC exhibits excellent spatial reconfigurability through the tuning of the optically induced thermoelectric field. This allows for the remote control of its position and shape, in a real-time and high-precision manner. Additionally, by changing the particle size, it is possible to tune the transmission spectrum and color. Additionally, optothermo-CPC can navigate obstacles and possess a robust self-healing ability. These highly adaptable and reconfigurable properties endow CPCs with significant potential for various photonic applications within complex fluidic environments.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"18 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142645877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-16DOI: 10.1007/s13538-024-01657-x
Temur Mustafayev, Farkhad Akhmedzhanov, Jurabek Abdiev, Shakhboz Khasanov
{"title":"Correction: An Exploration of Anisotropic Acoustic Wave Attenuation in Quartz Crystals","authors":"Temur Mustafayev, Farkhad Akhmedzhanov, Jurabek Abdiev, Shakhboz Khasanov","doi":"10.1007/s13538-024-01657-x","DOIUrl":"10.1007/s13538-024-01657-x","url":null,"abstract":"","PeriodicalId":499,"journal":{"name":"Brazilian Journal of Physics","volume":"55 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Exciton–polariton condensates featuring collective coherence and large nonlinearities are promising for advancing coherent light sources and functional devices. Nevertheless, their reliance on planar cavities with large lateral device footprints and mode volumes hinders device integration. Plasmon–exciton–polaritons (PEPs), arising from the strong coupling between excitons and plasmons, provide an intriguing platform to explore emergent polariton condensation at the nanoscale due to their ultrasmall mode volumes in metal nanoparticles. However, the substantial radiative and Ohmic losses in metals hamper PEPs condensation, particularly in the short wavelength range (<600 nm). Here, a method is proposed to address metal losses by integrating organic semiconductor neat films onto plasmonic lattices. The use of organic semiconductors with large transition dipole moment and low non-radiation loss enables efficient coupling between massive excitons and lattice plasmons, leading to high-density PEPs. This ensures a macroscopic number of polaritons populating the low-lying band edge at relatively low fluences to obtain bosonic stimulation, resulting in PEP condensation. By tailoring the band structures of plasmonic lattices, the condensation of PEPs are further manipulated into different energy states. These findings offer valuable insights for the design of PEP systems and all-optical polaritonic devices.
具有集体相干性和大非线性特征的激子-极化子凝聚态有望推动相干光源和功能器件的发展。然而，它们对具有较大横向器件足迹和模式体积的平面腔体的依赖阻碍了器件的集成。质子-激子-极化子（PEPs）产生于激子和质子之间的强耦合，由于其在金属纳米粒子中的超小模式体积，为探索纳米尺度的新兴极化子凝聚提供了一个有趣的平台。然而，金属中大量的辐射损耗和欧姆损耗阻碍了极化子的凝聚，尤其是在短波长范围内（600 纳米）。在此，我们提出了一种通过在等离子晶格上集成有机半导体整洁薄膜来解决金属损耗问题的方法。使用具有大过渡偶极矩和低非辐射损耗的有机半导体可实现大质量激子与晶格质子之间的高效耦合，从而产生高密度的 PEPs。这确保了在相对较低的通量下就有大量的极化子填充低洼带边，从而获得玻色子刺激，导致 PEP 凝聚。通过调整质子晶格的能带结构，PEP 的凝聚可进一步被操纵为不同的能态。这些发现为设计 PEP 系统和全光偏振器件提供了宝贵的见解。
{"title":"Plasmon–Exciton–Polariton Condensation in Organic Semiconductor-Covered Plasmonic Lattices","authors":"Shuang Wen, Ang Ren, Haidi Liu, Zhengjun Jiang, Xinyu Dong, Haiyun Dong, Jiannian Yao, Yongli Yan, Yong Sheng Zhao","doi":"10.1002/lpor.202401308","DOIUrl":"https://doi.org/10.1002/lpor.202401308","url":null,"abstract":"Exciton–polariton condensates featuring collective coherence and large nonlinearities are promising for advancing coherent light sources and functional devices. Nevertheless, their reliance on planar cavities with large lateral device footprints and mode volumes hinders device integration. Plasmon–exciton–polaritons (PEPs), arising from the strong coupling between excitons and plasmons, provide an intriguing platform to explore emergent polariton condensation at the nanoscale due to their ultrasmall mode volumes in metal nanoparticles. However, the substantial radiative and Ohmic losses in metals hamper PEPs condensation, particularly in the short wavelength range (<600 nm). Here, a method is proposed to address metal losses by integrating organic semiconductor neat films onto plasmonic lattices. The use of organic semiconductors with large transition dipole moment and low non-radiation loss enables efficient coupling between massive excitons and lattice plasmons, leading to high-density PEPs. This ensures a macroscopic number of polaritons populating the low-lying band edge at relatively low fluences to obtain bosonic stimulation, resulting in PEP condensation. By tailoring the band structures of plasmonic lattices, the condensation of PEPs are further manipulated into different energy states. These findings offer valuable insights for the design of PEP systems and all-optical polaritonic devices.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"248 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142645863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-16DOI: 10.1007/s13538-024-01648-y
Zhong-Zheng Li, Li-Qiang Jie, Sheng-De Liang, Kai Jiang, Dong-Ning Gao
Dust acoustic waves (DAWs) in a magnetized plasma with positive dust grains are carried out as affected by superthermal spectral index, cutoff parameter, plasma temperature, and density. The fluid equations considering polarization force (PF) are used to analyze the plasma environment. Reductive perturbation technique (RPT) and small k expansion technique (SKET) are used for deducing the Zakharov-Kuznetsov (ZK) equation and obtaining the growth rate (GR) of instability DAWs, respectively. The variation of dispersion relation (DR), profile, and instability GR of DAWs with superthermal spectral index, cutoff parameter, external magnetic field, plasma temperature, and density has been discussed. It indicates that the increasing superthermal spectral index and the decreasing cutoff parameter lead to the increasing frequency. The instability GR raises slowly with the increscent superthermal spectral index and decreasing cutoff parameter. In space environments, these interesting results will be important for a positively charged dust plasma with regularized (kappa ) distributed electrons in the presence of polarization force.
在具有正尘粒的磁化等离子体中，尘埃声波（DAWs）受超热光谱指数、截止参数、等离子体温度和密度的影响。考虑到极化力（PF）的流体方程用于分析等离子体环境。还原扰动技术（RPT）和小 K 扩展技术（SKET）分别用于推导扎哈罗夫-库兹涅佐夫（ZK）方程和获得不稳定 DAW 的增长率（GR）。讨论了超热谱指数、截止参数、外磁场、等离子体温度和密度对 DAW 的色散关系（DR）、剖面和不稳定性 GR 的影响。结果表明，超热光谱指数的增加和截止参数的减小会导致频率的增加。随着超热光谱指数的增大和截止参数的减小，不稳定性GR也在缓慢上升。在太空环境中，这些有趣的结果对于在极化力作用下具有正则化（kappa ）分布电子的带正电尘埃等离子体非常重要。
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