Photonics and Nanostructures-Fundamentals and Applications最新文献_第8页

Ultra-compact ferrofluid infiltrated magnetic field sensor utilizing microring resonator in silicon-on-insulator platform 基于硅绝缘体微环谐振器的超紧凑铁磁流体渗透磁场传感器

IF 2.5 3区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Photonics and Nanostructures-Fundamentals and Applications

Pub Date : 2025-09-01 Epub Date: 2025-07-10 DOI: 10.1016/j.photonics.2025.101424

Madhupriya Ganesh , Nagarajan Nallusamy , R. Vasantha Jayakantha Raja , N. Arzate-Plata , Krishnamoorthy Pandiyan , Rakesh Kumar Karn

In this paper, we aim to propose a compact high Q-factor magnetic field sensor which is CMOS compatible. Hence, we have proposed a novel micro-ring resonator (MRR) design using a silicon-on-insulator (SOI) platform where a magnetic ferrofluid is filled in the slot cavity. First, we initiated the design of slotted MRR for maximal light confinement by tuning the dimensions of rail widths, height, and slot width. After optimization, the rail width of 250 nm and the slot width of 100 nm with a height of 220 nm are reported to have a maximal confinement factor, forming the base design of the proposed magnetic field sensor. The application of an external magnetic field to the slotted MRR device with a ring radius of

50 μ m

resulted in a considerable change in the effective index, leading to significant variations in phase and transmission characteristics. A sensitivity of 5.399 pm/Oe is observed through consecutive dips in the transmission characteristics for the proposed model. To design an efficient magnetic sensor, the qualitative analysis, namely the quality factor (Q-factor) and extinction ratio (ER) are optimized by using rail widths and slot width. The reported results infer that the dimension of rail widths of 250 nm and slot width of 125 nm offer a high Q-factor of approximately 6.5

\times

10⁴ with an ER of 37 dB. The results pave the way for further advancements in integrated photonics and magnetic field manipulation.

在本文中，我们的目标是提出一个紧凑的高q因子的磁场传感器，是CMOS兼容。因此，我们提出了一种新型的微环谐振器（MRR）设计，使用绝缘体上硅（SOI）平台，在槽腔中填充磁性铁磁流体。首先，我们开始设计开槽MRR，通过调整轨道宽度、高度和开槽宽度的尺寸来实现最大的光约束。优化后，轨道宽度为250 nm，槽宽度为100 nm，高度为220 nm，具有最大的约束因子，形成了所提出的磁场传感器的基本设计。环形半径为50μm的开槽MRR器件在外加磁场作用下，有效指数发生较大变化，导致相位和传输特性发生显著变化。通过对所提出模型的传输特性的连续下降，观察到5.399 pm/Oe的灵敏度。为了设计一种高效的磁传感器，利用轨宽和槽宽优化定性分析，即质量因子（q因子）和消光比（ER）。结果表明，轨宽为250 nm和槽宽为125 nm的尺寸可提供约6.5 × 104的高q因子，ER为37 dB。这一结果为集成光子学和磁场操纵的进一步发展铺平了道路。

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引用次数: 0

Experimental study on simultaneous detection of dual parameters of refractive index and temperature based on NCF and MOF sensors 基于NCF和MOF传感器同时检测折射率和温度双参数的实验研究

IF 2.9 3区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Photonics and Nanostructures-Fundamentals and Applications

Pub Date : 2025-09-01 Epub Date: 2025-10-09 DOI: 10.1016/j.photonics.2025.101450

Sajid Ullah , Kaifeng Li , Hailiang Chen, Shuguang Li

In this paper, an experimental study using NCF and MOF-based sensors was conducted for simultaneous measurement of refractive index (RI) and temperature (T) detection. The magnetron sputtering machine was used for metal coatings where thickness was controlled by sputtering time. The RI sensing section uses only Ag film for both NCF and MOF-based sensors. For temperature sensing, NCF was coated with a composite of Ag and PDMS, and MOF uses copper (Cu), Ag and PDMS in sensing probes. Upon testing for the final sensor fabrication, an optimum length of 2.0 cm was used as sensing probes for both sensors. An NCF-based sensor demonstrated a wide detection range for simultaneous RI and T measurements of 1.333–1.381 RI and 0–70 °C, with RI and temperature sensitivities of 4000 nm/RIU and 3.5 nm/°C, respectively. The MOF-based sensor has further enhanced detection ranges to 1.333–1.399 RI and 0–100 °C, with maximum RI and temperature sensitivities of 5333.3 nm/RIU and 6.5 nm/°C, respectively in simultaneous RI and T measurements. At last, a dual-parameter stability test was conducted and it was found that both sensors faced negligible error variation upon repeated experiments. Featuring good stability, high sensitivity, and easy fabrication, our proposed sensors are expected to have a wide range of applications in biochemical sensing.

本文利用NCF和mof传感器进行了同时测量折射率（RI）和温度(T)检测的实验研究。磁控溅射机用于金属涂层，其厚度由溅射时间控制。RI传感部分仅使用Ag薄膜用于NCF和mof传感器。对于温度传感，NCF涂覆了Ag和PDMS的复合材料，MOF在传感探针中使用铜（Cu）， Ag和PDMS。在对最终传感器制造进行测试后，两个传感器的感应探头的最佳长度为2.0 cm。基于ncf的传感器具有较宽的检测范围，可同时测量1.333-1.381 RI和0-70°C的RI和T， RI和温度灵敏度分别为4000 nm/RIU和3.5 nm/°C。基于mof的传感器进一步提高了1.333-1.399 RI和0-100°C的检测范围，同时测量RI和T的最大RI和温度灵敏度分别为5333.3 nm/RIU和6.5 nm/°C。最后进行了双参数稳定性试验，反复试验发现两个传感器的误差变化都可以忽略不计。该传感器具有稳定性好、灵敏度高、易于制造等特点，有望在生物化学传感领域得到广泛应用。

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引用次数: 0

Research on light absorption efficiency of P3HT:PCBM-based solar cells improved by triple grating structure 三光栅结构提高P3HT: pcbm基太阳能电池光吸收效率的研究

IF 2.5 3区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Photonics and Nanostructures-Fundamentals and Applications

Pub Date : 2025-09-01 Epub Date: 2025-06-27 DOI: 10.1016/j.photonics.2025.101380

Ruijie Xie , Aodi Shi , Fanghao Shui , Hengdi Wang , Xiaokang Yang

In this paper, a novel triple-layer grating structure is proposed to improve light absorption efficiency of P3HT:PCBM-based solar cell. The periodic Ag grating is fabricated at bottom of P3HT:PCBM photosensitive layer and Ag electrode to excite surface plasmons (SPs). The excited SPs can greatly enhance electromagnetic field intensity around Ag grating, which can improve chance and efficiency of interaction between photons and photosensitive layer, and enhance light absorption efficiency of solar cell. The periodic indium tin oxide (ITO) grating and PEDOT:PSS grating is fabricated by etching rectangular grooves on top of ITO layer and depositing PEDOT:PSS layer. The light-trapping effect generated by grating allows light to be reflected and refracted multiple times inside solar cell, which can further increase chance of interaction between photons and photosensitive layer, and enhance light absorption efficiency of solar cell. The COMSOL software is used to simulate and optimize parameters of the novel structure. The light reflectivity, light transmissivity and metal absorption loss of photons at different structural parameters are obtained, and the light absorption efficiency is calculated. The simulation results show that light absorption efficiency of the novel structure is almost above 90 % at wavelength range of 400–500 nm in TM mode and almost above 90 % at wavelength range of 450–500 nm in TE mode. This research provides a reliable foundation for development of the novel P3HT:PCBM-based solar cell with high light absorption efficiency.

为了提高P3HT: pcbm太阳能电池的光吸收效率，提出了一种新型的三层光栅结构。在P3HT:PCBM光敏层底部和Ag电极处制作了周期Ag光栅，以激发表面等离子体。激发的SPs能大大增强Ag光栅周围的电磁场强度，提高光子与光敏层相互作用的机会和效率，提高太阳能电池的光吸收效率。通过在ITO层顶部蚀刻矩形凹槽，沉积PEDOT:PSS层，制备了周期性氧化铟锡（ITO）光栅和PEDOT:PSS光栅。光栅产生的捕光效应使光在太阳能电池内部被多次反射和折射，进一步增加了光子与光敏层相互作用的机会，提高了太阳能电池的光吸收效率。利用COMSOL软件对新型结构进行了仿真和参数优化。得到了不同结构参数下光子的反射率、透过率和金属吸收损失，并计算了光吸收效率。仿真结果表明，在TM模式下，该结构在400 ~ 500 nm波长范围内的光吸收效率几乎在90 %以上，在TE模式下，在450 ~ 500 nm波长范围内的光吸收效率几乎在90 %以上。该研究为开发新型高光吸收效率的P3HT: pcbm太阳能电池提供了可靠的基础。

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引用次数: 0

Compact SOI polarization rotator for next−gen polarization−diverse PICs 紧凑型SOI偏振旋转器，用于下一代偏振多样化pic

IF 2.9 3区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Photonics and Nanostructures-Fundamentals and Applications

Pub Date : 2025-09-01 Epub Date: 2025-10-13 DOI: 10.1016/j.photonics.2025.101452

Kenan Cicek

A compact and CMOS

-

compatible polarization rotator (PR) based on silicon

-

on

-

insulator (SOI) platform is proposed for high performance and polarization

-

diverse photonic integrated circuit (PIC) applications. The proposed device is numerically investigated using the FDTD method. With a footprint of only 1.2

\times 29.5 μ m

^{2}

, the rotator achieves a polarization conversion efficiency (PCE) greater than 96%, a polarization conversion loss (PCL) below 0.18 dB, and an extinction ratio (ER) of 16.7 dB across a 150 nm bandwidth (1.45

- 1.6 μ m

), covering the S, C, and part of the L bands. At the telecom wavelength of 1550 nm, the performance further improves, reaching a PCE of 98.7%, a PCL of 0.054 dB, and an ER of 20 dB. These results highlight the potential of the proposed design as a promising candidate for compact and efficient polarization control in future PIC

-

based systems.

提出了一种基于绝缘体上硅（SOI）平台的小型化、兼容CMOS的偏振旋转器（PR），用于高性能、极化多样化的光子集成电路（PIC）应用。采用时域有限差分法对该器件进行了数值研究。该旋转器占地面积仅为1.2×29.5μm 2，在150 nm带宽（1.45 ~ 1.6μm）范围内，覆盖S、C和部分L波段，偏振转换效率（PCE）大于96%，偏振转换损耗（PCL）低于0.18 dB，消光比（ER）为16.7 dB。在1550 nm通信波长下，性能进一步提高，PCE达到98.7%，PCL达到0.054 dB， ER达到20 dB。这些结果突出了所提出的设计作为未来基于PIC的系统中紧凑和高效极化控制的有希望的候选方案的潜力。

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引用次数: 0

Inverse-designed ultra-compact hexagonal/square/circular silicon on-chip wavelength routers 反设计超紧凑六角形/方形/圆形硅片上波长路由器

IF 2.9 3区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Photonics and Nanostructures-Fundamentals and Applications

Pub Date : 2025-09-01 Epub Date: 2025-10-10 DOI: 10.1016/j.photonics.2025.101455

Shouzhi Zhao , Nanrun Zhou , Cuicui Lu , Huiqin Wang , Zijing Zhang , Haoji Yang

Wavelength routers (WRs) are important in on-chip photonic integrated circuits. A modified sequential quadratic programming (MSQP) inverse design method is proposed to design multi-shape WRs. In this method, fabrication constraints are considered by quoting projection functions, while the finite element method (FEM) is used for optical field simulation during the iterative optimization process. By the MSQP method, the 10-channel hexagonal, square, and circular WRs are designed with footprints of 3.74 μm², 4.00 μm², and 4.52 μm², respectively. Their average transmission efficiencies are 81.0 %, 77.4 %, and 76.4 % in the 1070–1600 nm, 1070–1620 nm, and 1070–1620 nm bands, respectively. Additionally, 11- and 12-channel square WRs are designed with footprints of 4.00 μm². Their average transmission efficiencies are 75.6 % and 72.0 %, within the 1070–1690 nm and 1070–1640 nm bands. Furthermore, the fabrication tolerances of the hexagonal WR are analyzed. The results show that it has the tolerant capabilities of a silicon layer thickness variation of ±50 nm, an etching line width deviation of ±10 nm, an edge roughness of 1–10 nm, and a misalignment of 20 nm. This study provides new ideas for the design of ultra-compact integrated devices and lays the foundation for high-volume optical computing.

波长路由器是片上光子集成电路的重要组成部分。提出了一种改进的序列二次规划（MSQP）反设计方法来设计多形状水反应堆。该方法通过引用投影函数来考虑制作约束，在迭代优化过程中采用有限元法进行光场模拟。采用MSQP方法，设计了占地面积分别为3.74 μm2、4.00 μm2和4.52 μm2的10通道六角形、方形和圆形wr。在1070 ~ 1600 nm、1070 ~ 1620 nm和1070 ~ 1620 nm波段的平均传输效率分别为81.0 %、77.4% %和76.4 %。此外，11通道和12通道方形wr的占用面积为4.00 μm2。在1070-1690 nm和1070-1640 nm波段，它们的平均传输效率分别为75.6 %和72.0 %。此外，还分析了六边形WR的加工公差。结果表明，该系统对硅层厚度变化±50 nm、蚀刻线宽度偏差±10 nm、边缘粗糙度1 ~ 10 nm、对中误差20 nm具有耐受能力。该研究为超紧凑集成器件的设计提供了新的思路，为大规模光计算奠定了基础。

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引用次数: 0

Reconfigurable narrowband-to-broadband absorber featuring GeTe’s phase change planar structures 具有GeTe相变平面结构的可重构窄带到宽带吸收器

IF 2.9 3区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Photonics and Nanostructures-Fundamentals and Applications

Pub Date : 2025-09-01 Epub Date: 2025-09-20 DOI: 10.1016/j.photonics.2025.101447

Israel Alves Oliveira , Vitaly Felix Rodriguez-Esquerre , Igor Leonardo Gomes de Souza

Phase change materials (PCMs) like GeTe have become essential in reconfigurable nanophotonic devices due to their ability to undergo reversible structural transitions between amorphous and crystalline states, which lead to significant, tunable changes in optical properties. This tunability allows for dynamic control over light-matter interactions, making PCMs ideal for optical switches, modulators, and adaptive photonic systems. In this study, we propose a reconfigurable narrowband-to-broadband absorber based on planar GeTe structures integrated with GaAs layers and a Silicon and a gold thin-film substrate, which we designed and analyzed numerically by the Finite Element Method (FEM). Our design leverages the contrasting behaviors of GeTe: the amorphous phase enables narrowband absorption, while the crystalline phase broadens the absorption spectrum to cover the range from 1150 to 1750 nm. The influence of material thickness was also assessed to evaluate manufacturing error tolerances, allowing for a more precise selection of the desired configuration. The effects of oblique incidence angles on Transversal Electric (TE) and Transversal Magnetic (TM) polarized waves were analyzed for both cases. Additionally, the physical mechanisms of field coupling were investigated.

像GeTe这样的相变材料（PCMs）在可重构的纳米光子器件中已经变得必不可少，因为它们能够在非晶和晶体状态之间经历可逆的结构转变，从而导致光学性质的显著可调变化。这种可调节性允许对光-物质相互作用进行动态控制，使pcm成为光开关，调制器和自适应光子系统的理想选择。在这项研究中，我们提出了一种基于平面GeTe结构的可重构窄带到宽带吸收器，该结构集成了GaAs层和硅、金薄膜衬底，并通过有限元方法对其进行了设计和数值分析。我们的设计利用了GeTe的不同行为：非晶相可以窄带吸收，而晶体相可以拓宽吸收光谱，覆盖1150到1750 nm的范围。还评估了材料厚度的影响，以评估制造误差容差，从而可以更精确地选择所需的配置。分析了斜入射角对横向电（TE）和横向磁（TM）极化波的影响。此外，还研究了场耦合的物理机制。

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引用次数: 0

Low-temperature chemical synthesis and stabilization of silver nanoparticles for optical power limiting applications 用于光功率限制应用的银纳米粒子的低温化学合成和稳定

IF 2.9 3区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Photonics and Nanostructures-Fundamentals and Applications

Pub Date : 2025-09-01 Epub Date: 2025-08-08 DOI: 10.1016/j.photonics.2025.101434

Shradha Lakhera , Vivek Dhuliya , Meenakshi Rana , L.P. Purohit

Chemical synthesis of silver nanoparticles (AgNPs) was performed using a chemical reduction method and its optical limiting activity is discussed in this article. The prepared AgNPs were tested under laser light and showed a clear path of the laser light indicating the dispersion of the laser beam via the nano-range particles. The morphological and energy dispersive spectra indicated the availability of AgNPs with a particle size of 3–13 nm. The absorption spectra of the prepared AgNPs stabilized by polyvinyl pyrrolidine confirmed that the AgNPs with 0.5 ml polyvinyl pyrrolidine were the most stable. The prepared AgNPs were stable for up to 60 days. The band gap of the prepared AgNPs was confirmed as 2.4 eV. The Fourier-transform Infrared spectra confirmed the stretching vibrations of the CO and O-H bonds. Field emission scanning electron microscopy images confirms the formation of AgNPs and the elemental composition confirmed that the prepared AgNPs has a weight percentage of 24 % Ag atoms. Tunneling electron microscopy analysis confirmed that the average particle size of AgNPs was 9 nm. The diffraction pattern obtained indicates the Face-centered cubic crystal structure of the AgNPs. In the Z-scan experiment, a valley-like pattern with a minimum at the origin was observed for the normalized transmittance versus distance (Z(mm)). The optical limiting pattern decreases the transmittance with increasing input intensity. The results reproduced by Z-scan analysis shows the optical limiting characteristics of the prepared AgNPs which can be employed for the fabrication of laser safety devices.

采用化学还原法制备了银纳米粒子，并对其光学极限活性进行了讨论。制备的AgNPs在激光下进行了测试，显示出清晰的激光路径，表明激光束通过纳米级颗粒的色散。形态和能量色散谱表明，AgNPs的粒径为3-13 nm。聚乙烯醇吡咯烷稳定AgNPs的吸收光谱证实，加入0.5 ml聚乙烯醇吡咯烷的AgNPs最稳定。制备的AgNPs在60天内保持稳定。所得AgNPs的带隙为2.4 eV。傅里叶变换红外光谱证实了CO和O-H键的伸缩振动。场发射扫描电镜图像证实了AgNPs的形成，元素组成证实制备的AgNPs具有24% % Ag原子的重量百分比。隧道电镜分析证实，AgNPs的平均粒径为9 nm。衍射图显示了AgNPs的面心立方晶体结构。在Z扫描实验中，观察到归一化透射率随距离（Z(mm)）在原点处具有最小值的谷状图案。光学限制图案随着输入强度的增加而降低透光率。z扫描分析结果表明，制备的AgNPs具有良好的光学限制特性，可用于激光安全器件的制备。

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引用次数: 0

Model and effect of backscattering on mode splitting in optical circular cavity 光学圆腔中后向散射对模式分裂的模型及影响

IF 2.5 3区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Photonics and Nanostructures-Fundamentals and Applications

Pub Date : 2025-09-01 Epub Date: 2025-06-11 DOI: 10.1016/j.photonics.2025.101420

Kangyong Hu, Jingtong Duan, Yameng Xu, Xin Liu, Mei Kong

In optical circular cavities, backscattering due to refractive index inhomogeneity and sidewall roughness can cause degenerate resonant modes to split. In this paper, a steady-state field model for circular cavities with backscattering is established and solved. The splitting conditions of the reflection and the transmission spectra and for obvious splitting are discussed. The proposed analytical model and the obtained mode splitting conditions are concise and feasible, which will provide great convenience to the evaluation or anticipation of the backscattering-induced mode splitting. The insights provided by this paper will also serve as a valuable reference for circular resonators of other configurations.

在光学圆腔中，由于折射率不均匀性和侧壁粗糙度引起的后向散射会导致简并共振模式分裂。本文建立并求解了具有后向散射的圆形腔的稳态场模型。讨论了反射光谱和透射光谱的分裂条件以及明显分裂的条件。所建立的解析模型和得到的模分裂条件简洁可行，为后向散射诱导模分裂的评价或预测提供了极大的便利。本文提供的见解也将为其他结构的圆谐振器提供有价值的参考。

引用次数: 0

Machine-learning-assisted design of energy-saving windows with high near-infrared shielding properties 高近红外屏蔽性能节能窗的机器学习辅助设计

IF 2.5 3区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Photonics and Nanostructures-Fundamentals and Applications

Pub Date : 2025-07-01 Epub Date: 2025-04-18 DOI: 10.1016/j.photonics.2025.101389

Chengchao Wang , Haojun Zhu , Hengyi Fan , Yinmo Xie , Qingzhi Lai , Lanxin Ma

Nanocomposite films based on Cesium tungsten oxide (CWO) and Indium tin oxide (ITO) nanoparticles provide a broad space for adjusting the optical properties of energy-saving windows due to their unique near-infrared absorption properties. This property has led to great research interest in the field of energy-saving windows for such materials. The optical properties of energy-saving windows are mainly determined by localized surface plasmon resonance (LSPR) of the nanoparticles, and thus they are sensitive to the variation of the geometrical parameters of the nanoparticles. Typically, the computational cost of the design of specific optical properties and iterative optimization of the geometrical parameters is expensive and time-consuming. In this study, we combine machine learning and radiative transfer calculations to achieve targeted design energy-saving windows. By adjusting the shape, material, and geometric parameters of nanoparticles, an analysis model can be established from the geometric parameters of nanoparticles to the properties of energy-saving windows. Then, a machine learning model of bidirectional deep neural network is developed to achieve accurate prediction of optical evaluation parameters (visible transmittance (T_lum), near-infrared (NIR) transmittance (T_NIR), solar radiation transmittance (T_sol), and the Figure of Merit (FOM)) for energy-saving windows, as well as inverse design of geometric parameters of nanoparticles (CWO and ITO). The results indicate that our machine learning model achieved forward prediction of energy-saving window optical properties with an accuracy of over 99 % and inverse geometric parameter design with an accuracy of over 93 %. Overall, this work provides a broadly appropriate and computationally efficient method for evaluating and designing the properties of energy-saving windows.

基于氧化铯钨（CWO）和氧化铟锡（ITO）纳米颗粒的纳米复合膜由于其独特的近红外吸收特性，为节能窗光学性能的调整提供了广阔的空间。这一特性引起了人们对这种材料的节能窗户领域的极大研究兴趣。节能窗的光学特性主要由纳米粒子的局域表面等离子体共振（LSPR）决定，因此对纳米粒子几何参数的变化非常敏感。通常，特定光学特性的设计和几何参数的迭代优化的计算成本是昂贵和耗时的。在本研究中，我们将机器学习和辐射传递计算相结合，以实现有针对性的节能窗户设计。通过调整纳米颗粒的形状、材料和几何参数，可以建立纳米颗粒几何参数对节能窗性能的分析模型。然后，建立了双向深度神经网络机器学习模型，实现了节能窗光学评价参数（可见光透过率（Tlum）、近红外透过率（TNIR）、太阳辐射透过率（Tsol）和优值图（FOM））的准确预测，以及纳米颗粒（CWO和ITO）几何参数的逆设计。结果表明，我们的机器学习模型实现了节能窗光学特性的正向预测，精度超过99 %，几何参数的逆设计精度超过93 %。总的来说，这项工作为评估和设计节能窗户的性能提供了一种广泛适用且计算效率高的方法。

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引用次数: 0

High-sensitivity refractive index based terahertz metasurface biosensor for detecting multiple cancers and infectious diseases 用于检测多种癌症和传染病的高灵敏度折射率太赫兹超表面生物传感器

IF 2.5 3区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Photonics and Nanostructures-Fundamentals and Applications

Pub Date : 2025-07-01 Epub Date: 2025-05-13 DOI: 10.1016/j.photonics.2025.101399

Taha Sheheryar , Ye Tian , Bo Lv , Lei Gao

Despite notable progress, many existing terahertz biosensors rely on expensive materials like noble metals or 2D nanomaterials and are typically restricted to detecting specific biomarkers or single diseases, which limits their specificity, adaptability and real-world clinical utility. This work addresses these limitations by proposing a cost-effective, scalable refractive index based metasurface biosensor design that is composed of Aluminum and Polyimide. Through a dual-resonance mechanism, the sensor captures minute dielectric variations linked to multiple diseases including cancers such as breast, blood and cervical, as well as blood related infections like malaria. Under optimized simulation conditions, the sensor shows a high-Quality Factor exceeding 200, a Figure of Merit of 63.68 RIU⁻¹ and a sensitivity of 3.107 THz/RIU. Beyond its strong performance metrics, the sensor provides a cost-effective and non-invasive detection platform that seamlessly integrates simplicity, adaptability to multiple diseases and high diagnostic precision, advancing the field of early, rapid and accessible diagnostics across a wide range of biomedical applications, especially in resource limited settings.

尽管取得了显著的进展，但许多现有的太赫兹生物传感器依赖于昂贵的材料，如贵金属或二维纳米材料，并且通常仅限于检测特定的生物标志物或单一疾病，这限制了它们的特异性、适应性和现实世界的临床实用性。这项工作通过提出一种成本效益高、可扩展的基于铝和聚酰亚胺折射率的超表面生物传感器设计来解决这些限制。通过双共振机制，传感器捕捉到与多种疾病相关的微小介电变化，包括乳腺癌、血癌和宫颈癌等癌症，以及疟疾等与血液相关的感染。在优化的仿真条件下，该传感器的质量因数超过200，优点系数为63.68 RIU⁻¹ ，灵敏度为3.107 THz/RIU。除了其强大的性能指标外，该传感器还提供了一个具有成本效益和非侵入性的检测平台，无缝集成了简单性，对多种疾病的适应性和高诊断精度，在广泛的生物医学应用中推进了早期，快速和可获得的诊断领域，特别是在资源有限的环境中。

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引用次数: 0