Advanced Physics Research最新文献_第9页

Research Advances and Perspectives on Terahertz Detection based on 2D Materials 基于二维材料的太赫兹探测研究进展与展望

Advanced Physics Research Pub Date : 2024-08-22 DOI: 10.1002/apxr.202400094

Zhuoxuan Chen, Zelong Li, Muhammad Ahsan Iqbal, Nayab Arif, Chenyang Xing, Lu Qi, Yu-Jia Zeng

引用次数: 0

Performance Analysis of Microwave Photonic Spectral Filters based on Optical Microcombs 基于光学微梳的微波光子光谱滤波器性能分析

Advanced Physics Research Pub Date : 2024-08-22 DOI: 10.1002/apxr.202400084

Yang Li, Yang Sun, Jiayang Wu, Guanghui Ren, Xingyuan Xu, Bill Corcoran, Sai Tak Chu, Brent E. Little, Roberto Morandotti, Arnan Mitchell, David J. Moss

{"title":"Performance Analysis of Microwave Photonic Spectral Filters based on Optical Microcombs","authors":"Yang Li, Yang Sun, Jiayang Wu, Guanghui Ren, Xingyuan Xu, Bill Corcoran, Sai Tak Chu, Brent E. Little, Roberto Morandotti, Arnan Mitchell, David J. Moss","doi":"10.1002/apxr.202400084","DOIUrl":"https://doi.org/10.1002/apxr.202400084","url":null,"abstract":"Microwave transversal filters, which are implemented based on the transversal filter structure in digital signal processing, offer a high reconfigurability for achieving a variety of signal processing functions without changing hardware. When implemented using microwave photonic (MWP) technologies, also known as MWP transversal filters, they provide competitive advantages over their electrical counterparts, such as large operation bandwidth, strong immunity to electromagnetic interference, and low loss when processing signals at high frequencies. Recent advances in high-performance optical microcombs provide compact and powerful multi-wavelength sources for MWP transversal filters that require a larger number of wavelength channels to achieve high performance, allowing for the demonstration of a diverse range of filter functions with improved performance and new features. Here, a comprehensive performance analysis for microcomb-based MWP spectral filters based on the transversal filter approach is presented. First, the theoretical limitations are investigated in the filter spectral response induced by finite tap numbers. Next, the distortions are analyzed in the filter spectral response resulting from experimental error sources. Finally, the influence of input signal's bandwidth on the filtering errors is assessed. These results provide a valuable guide for the design and optimization of microcomb-based MWP transversal filters for a variety of applications.","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202400084","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143118061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Narrow-Bandwidth I–III–VI Semiconductor Nanocrystals: Synthesis, Luminescence and Applications in Quantum-Dot Light-Emitting Diodes 窄带I-III-VI半导体纳米晶体：合成、发光及其在量子点发光二极管中的应用

Advanced Physics Research Pub Date : 2024-08-13 DOI: 10.1002/apxr.202400071

Xiulin Xie, Tianyi Jiang, Ouyang Lin, Jiahao Liu, Yu Zhang, Aiwei Tang

引用次数: 0

Finite Size Effects in Antiferromagnetic Highly Strained BiFeO3 Multiferroic Films 反铁磁性高应变 BiFeO3 多铁性薄膜中的有限尺寸效应

Advanced Physics Research Pub Date : 2024-08-11 DOI: 10.1002/apxr.202400068

Daniel Sando, Florian Appert, Oliver Paull, Shintaro Yasui, Dimitrios Bessas, Abdeslem Findiki, Cécile Carrétéro, Vincent Garcia, Brahim Dkhil, Agnès Barthelemy, Manuel Bibes, Jean Juraszek, Nagarajan Valanoor

{"title":"Finite Size Effects in Antiferromagnetic Highly Strained BiFeO3 Multiferroic Films","authors":"Daniel Sando, Florian Appert, Oliver Paull, Shintaro Yasui, Dimitrios Bessas, Abdeslem Findiki, Cécile Carrétéro, Vincent Garcia, Brahim Dkhil, Agnès Barthelemy, Manuel Bibes, Jean Juraszek, Nagarajan Valanoor","doi":"10.1002/apxr.202400068","DOIUrl":"https://doi.org/10.1002/apxr.202400068","url":null,"abstract":"Epitaxially strain-engineered tetragonal (T)-like BiFeO3 (BFO) is a multiferroic material with unique crystallographic and physical properties compared to its bulk rhombohedral parent. While the effect of this structural change on ferroelectric properties is understood, the influence on correlated antiferromagnetic (AFM) properties, especially with reduced film thickness, is less clear. Here, the AFM behavior of T-like BFO films 9–58 nm thick on LaAlO3 (001) substrates fabricated by pulsed laser deposition was studied using conversion electron Mössbauer spectroscopy and X-ray diffraction. The key findings include: i) Ultrathin T-like BFO films (<10 nm) show a decoupling of magnetic and structural transitions, with the polar vector tilted 32 degrees from [001] in 9–13 nm films. ii) Films thinner than 13 nm exhibit no structural transition down to 150 K, with a Néel (TN) transition at ≈290 K, ≈35 K lower than thicker films. Interestingly, the TN scaling with thickness suggests realistic scaling exponents considering a critical correlation length for C-type AFM order, rather than G-type. The results show that finite size effects can tailor transition temperatures and modulate AFM wave modes in antiferromagnetic oxides, with implications for AFM spintronics for future information technologies.","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"3 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202400068","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142860824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent Advances in Geometric Phase Metasurfaces: Principles and Applications 几何相元表面的新进展：原理与应用

Advanced Physics Research Pub Date : 2024-08-11 DOI: 10.1002/apxr.202400095

Faizan Faraz, Jie Tian, Taufeeq Ur Rehman Abbasi, Weiren Zhu

{"title":"Recent Advances in Geometric Phase Metasurfaces: Principles and Applications","authors":"Faizan Faraz, Jie Tian, Taufeeq Ur Rehman Abbasi, Weiren Zhu","doi":"10.1002/apxr.202400095","DOIUrl":"https://doi.org/10.1002/apxr.202400095","url":null,"abstract":"The concept of geometric phase traversing numerous domains in physics and has been a continuous source of fascination and inspiration for researchers. Despite the extensive research surrounding geometric phase from decades, advances in technology continue to yield novel theories, innovative devices, and captivating applications, extending even to the realm of subwavelength scales. This review article provides a comprehensive exploration of geometric phase metasurfaces, delving into their design principles and categorizing them based on materials properties. In addition, multi-fold and reconfigurable metasurfaces based on geometric principle are further explored with their unique capabilities and potential impact on a diverse range of applications, including beam steering, lensing, polarization conversion, and holographic imaging. By examining the state-of-the-art in geometric phase metasurfaces, insights are aimed to offer into their current capabilities and limitations. Finally, the prospects and challenges are discussed that lie ahead for this promising field, paving the way for future advancements and innovations.","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"4 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202400095","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143380732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Masthead (Adv. Phys. Res. 8/2024) 刊头 (Adv. Phys. Res. 8/2024)

Advanced Physics Research Pub Date : 2024-08-08 DOI: 10.1002/apxr.202470019

引用次数: 0

Physical Strategies for Geometric Control of Transition Metal Dichalcogenide Atomic Layers by Chemical Vapor Deposition (Adv. Phys. Res. 8/2024) 通过化学气相沉积实现二卤化过渡金属原子层几何控制的物理策略（Adv. Phys. Res.）

Advanced Physics Research Pub Date : 2024-08-08 DOI: 10.1002/apxr.202470018

Jing Yi Tee, Mark John, Wei Fu, Thathsara D. Maddumapatabandi, Fabio Bussolotti, Calvin Pei Yu Wong, Kuan Eng Johnson Goh

引用次数: 0

1.3 µm InAs/GaAs Quantum-Dot Lasers with p-Type, n-Type, and Co-Doped Modulation 具有 p 型、n 型和共掺调制功能的 1.3 µm InAs/GaAs 量子点激光器

Advanced Physics Research Pub Date : 2024-08-06 DOI: 10.1002/apxr.202400045

Huiwen Deng, Jae-Seong Park, Xuezhe Yu, Zizhuo Liu, Hui Jia, Haotian Zeng, Junjie Yang, Shujie Pan, Siming Chen, Alwyn Seeds, Mingchu Tang, Peter Smowton, Huiyun Liu

引用次数: 0

Excited-State Dynamics and Optical Properties of Silica Under Ultrafast Laser Irradiation 超快激光辐照下二氧化硅的激发态动力学和光学性质

Advanced Physics Research Pub Date : 2024-08-06 DOI: 10.1002/apxr.202400106

Arshak A. Tsaturyan, Elena Kachan, Razvan Stoian, Jean-Philippe Colombier

{"title":"Excited-State Dynamics and Optical Properties of Silica Under Ultrafast Laser Irradiation","authors":"Arshak A. Tsaturyan, Elena Kachan, Razvan Stoian, Jean-Philippe Colombier","doi":"10.1002/apxr.202400106","DOIUrl":"https://doi.org/10.1002/apxr.202400106","url":null,"abstract":"Excited by intense infrared ultrafast light pulses, a wide bandgap material undergoes nonlinear ionization, generating a high density of free electrons in conduction states. As a result, the electronic band structure is critically modified and the bandgap shrinks. This induces rapid changes in optical properties, dramatically affecting the absorption spectrum during light coupling to the dielectric surface or during nonlinear propagation inside the bulk. This study analyzes the structural behavior and the modification of the optical properties of laser-excited silica glass at the molecular cluster level through first-principles simulations. Employing density functional theory and the GW approximations for band structure under nonequilibrium conditions, alongside the Bethe–Salpeter equation, the dynamics of the optical properties of fused silica are comprehensively explored. The behavior of excited fused silica in a wide photon energy range (from a few to 20 eV) is thus predicted. Laser-induced electron excitation triggers a redistribution of charges between oxygen and silicon atoms, accompanied by a significant increase in electronic pressure, local atomic structure rearrangement, and material expansion. Molecular dynamics simulations offer a temporal perspective on the excited state dynamics, unveiling the intricate interplay between electronic and atomic effects on bandgap evolution. The analysis sheds light on excitonic resonances, intraband and interband transitions in fused silica under ultrafast laser irradiation, providing valuable insights into its excited state behavior and optical properties.","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"4 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202400106","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143380448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring Green Fluorescent Protein Brownian Motion: Temperature and Concentration Dependencies Through Luminescence Thermometry 探索绿色荧光蛋白布朗运动：通过发光测温仪探究温度和浓度依赖性

Advanced Physics Research Pub Date : 2024-08-06 DOI: 10.1002/apxr.202400085

Yongwei Guo, Fernando E. Maturi, Carlos D. S. Brites, Luís D. Carlos

{"title":"Exploring Green Fluorescent Protein Brownian Motion: Temperature and Concentration Dependencies Through Luminescence Thermometry","authors":"Yongwei Guo, Fernando E. Maturi, Carlos D. S. Brites, Luís D. Carlos","doi":"10.1002/apxr.202400085","DOIUrl":"https://doi.org/10.1002/apxr.202400085","url":null,"abstract":"Luminescent nanothermometry emerges as a powerful tool for studying protein dynamics. This technique was employed to perform the first measurement of the temperature dependence of protein Brownian velocity, showcasing the illustrative example of enhanced green fluorescent protein (EGFP) across physiologically relevant temperatures (30−50 °C) and concentrations (40, 60, and 80 × 10−3 kg m−3). EGFP exhibited a concentration-dependent decrease in Brownian velocity, from (1.47 ± 0.09) × 10−3 m s−1 to (0.35 ± 0.01) × 10−3 m s−1, at 30 °C, mimicking crowded cellular environments. Notably, the protein Brownian velocity increased linearly with temperature. These results demonstrate the suitability of concentrated suspensions for modeling intracellular crowding and validate luminescent nanothermometry for protein Brownian motion studies. Furthermore, the observed linear relationship between the logarithm of the protein Brownian velocity and concentration indicates that EGFP motion is not primarily driven by diffusion, but more of a ballistic transport.","PeriodicalId":100035,"journal":{"name":"Advanced Physics Research","volume":"3 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/apxr.202400085","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0