Article
Physics, Applied
Yanning Liu, Rui Mao, Peng Zhang, Wenxin Li, Maoren Wang, Li Zhang, Yu Gong, Peiheng Zhou, Difei Liang, Longjiang Deng
Summary: This study proposes a reflective metasurface platform based on phase-change material to address the challenges of lens quality and tunability in the mid-infrared frequency range. By converting the phase of the material, the focal length and intensity profile can be continuously modulated. The platform uses mature optical materials and can be fabricated using standard microfabrication technologies.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Optics
Fan Xu, Wenjie Chen, Ming Li, Peng Liu, Yuhang Chen
Summary: Metalenses are considered a promising solution for miniaturizing optical systems due to their light weight, ultrathin thickness, and compact size. This work presents a single-layer achromatic metalens with a wide field-of-view and broadband imaging capability, which can be applied in various fields including unmanned vehicles and infrared detection.
Article
Optics
Fan Xu, Wenjie Chen, Ming Li, Peng Liu, Yuhang Chen
Summary: A single-layer achromatic metalens with wide field-of-view and broadband imaging capability has been designed, which has potential applications in unmanned vehicles, infrared detection, etc.
Article
Optics
Xin Yu, Yun Shen, Guohong Dai, Liner Zou, Tailin Zhang, Xiaohua Deng
Summary: The experimental demonstration of high-resolution terahertz focusing in planar metalenses composed of V-shaped antenna units on a silicon substrate has shown that larger numerical apertures can improve spatial resolution. Numerical simulations were validated by experimental results obtained using a terahertz near-field imaging system, especially for 1.1 THz incident light. Increasing the numerical aperture from 0.79 to 0.95 resulted in a corresponding decrease in the full width at half maximum from 343 μm to 206 μm, demonstrating an enhancement in spatial resolution.
Review
Optics
Amir Arbabi, Andrei Faraon
Summary: Optical metalenses, which are arrays of submicrometre scatterers that collectively focus light, have gained increasing research interest due to their ability to realize conventional optical elements with novel functionalities. Their progress is driven by the demand for low-cost, high-performance miniaturized optical systems and is supported by advancements in nanofabrication and computational tools. This review discusses the capabilities of metalenses, such as their multifunctionality and efficient subwavelength focusing, and explores their potential applications and current state of the art. The outstanding challenges in the field are also highlighted, along with the application areas where metalenses could have a substantial impact.
Article
Nanoscience & Nanotechnology
Junbo Hao, Ting Ma, Zilin Ye, Chen Chen, Dahai Yang, Keya Zhou, Yiqun Wang, Peng Jin, Jie Lin
Summary: In this study, a simulation method combining finite-difference time-domain algorithm and diffraction integration is proposed for designing large-aperture metalenses. All-silicon metalenses with sub-wavelength structures are designed using meta-atom spatial multiplexing to achieve dual-wavelength focusing and dispersion control. This method is significant for the development of large-aperture imaging systems in the long-wave infrared.
Article
Optics
Junwei Xu, Ximin Tian, Pei Ding, Kun Xu, Zhi-Yuan Li
Summary: This paper presents a polarization-insensitive, switchable, and dual-mode multifunctional metalens, achieved by using anisotropic nanostructures as building blocks to focus and manipulate incident light, demonstrating excellent performance characteristics.
Review
Biochemistry & Molecular Biology
Charlotte Delrue, Sander De Bruyne, Marijn M. Speeckaert
Summary: Traditional renal biomarkers are insensitive for early detection of kidney disease. Infrared spectroscopy offers a label-free and non-destructive method for quick and inexpensive diagnosis of kidney disorders. This review provides an overview of the applications of near- and mid-infrared spectroscopy in patients with acute kidney injury and chronic kidney disease.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Multidisciplinary
Trevon Badloe, Junhwa Seong, Junsuk Rho
Summary: Metalenses have the potential to revolutionize optical devices by integrating multiple functionalities into a single flat device. In this study, we design metalenses that are sensitive to incident spin angular momentum and provide three distinct modes based on the handedness of the light. We experimentally demonstrate the use of these metalenses for spin-selective imaging of visible light and envision their application in chiral bioimaging, optical computing, and computer vision.
Article
Chemistry, Multidisciplinary
Xingyu Shen, John C. Peterson, Philippe Guyot-Sionnest
Summary: Mid-infrared HgTe colloidal quantum dot electroluminescent devices with high external quantum efficiency and power conversion efficiency were demonstrated. The power conversion efficiency was improved by reducing the resistance of the transparent electrode through the incorporation of a metal conductive grid.
Article
Optics
Maoxiong Zhao, Mu Ku Chen, Ze-Peng Zhuang, Yiwen Zhang, Ang Chen, Qinmiao Chen, Wenzhe Liu, Jiajun Wang, Ze-Ming Chen, Bo Wang, Xiaohan Liu, Haiwei Yin, Shumin Xiao, Lei Shi, Jian-Wen Dong, Jian Zi, Din Ping Tsai
Summary: Metalenses have shown superior performance and abundant applications as a new optical element, but the direct measurement of their phase distribution is still a challenge. A newly developed interferometric imaging phase measurement system allows for the direct measurement of the phase distribution of a metalens, enabling further analysis of its performance and characteristics.
LIGHT-SCIENCE & APPLICATIONS
(2021)
Article
Physics, Applied
Mohit Kumar, Pawan Kumar, Andres Vega, Maximilian A. Weissflog, Thomas Pertsch, Frank Setzpfandt
Summary: By tuning the pump wavelength, we have successfully achieved phase matching for nondegenerate photon pair generation in a silver gallium sulfide AgGaS2 crystal, generating photon pairs in the mid-infrared and visible spectral ranges. Additionally, we demonstrated photon pair generation with broad spectral bandwidth.
APPLIED PHYSICS LETTERS
(2021)
Review
Food Science & Technology
Carlotta Ceniti, Anna Antonella Spina, Cristian Piras, Francesca Oppedisano, Bruno Tilocca, Paola Roncada, Domenico Britti, Valeria Maria Morittu
Summary: To ensure the safety and quality of milk, new tools have been developed to detect chemical contaminants, toxins, veterinary drugs, and adulteration of milk from different species. Mid-infrared spectroscopy and Fourier-transform infrared have been commonly used technologies for rapid screening of hazardous substances and confirmation of milk authenticity. These fingerprint methods can effectively determine the characteristics of raw materials without knowing the identity of each constituent, making them potential screening methods for adulteration detection. This paper reviews the latest advances in applying mid-infrared spectroscopy for the detection and quantification of adulterants, milk dilution, pathogenic bacteria, veterinary drugs, and hazardous substances in milk.
Article
Materials Science, Multidisciplinary
Guozhen Liang, Xuechao Yu, Xiaonan Hu, Bo Qiang, Chongwu Wang, Qi Jie Wang
Summary: Two-dimensional (2D) materials have attracted significant research interest for their unique properties, especially in MIR photonic and optoelectronic applications. The MIR region presents challenges due to lack of suitable materials and photonic designs, but researchers are exploring the potential of 2D materials to bridge this gap.
Article
Chemistry, Analytical
Andrey Bogomolov, Tatiana Sakharova, Iskander Usenov, Camillo Mizaikoff, Valeria Belikova, Stanislav Perevoschikov, Viacheslav Artyushenko, Olga Bibikova
Summary: A multispectral fiber optic probe has been developed for simultaneous analysis of various liquid and solid samples using attenuated total reflection mid-infrared spectroscopy and fluorimetry. Technical evaluation has confirmed its output signal quality comparable to single-method probes, demonstrating the capability to deliver complementary chemical information. The qualitative analysis of biological tissue is highlighted as one of the key applications of this developed multispectral probe.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Jiajing He, Kaixiang Chen, Chulin Huang, Xiaoming Wang, Yongning He, Yaping Dan
Article
Nanoscience & Nanotechnology
Jiajing He, Chulin Huang, Huimin Wen, Xiaoming Wang, Yongning He, Yaping Dan
Article
Materials Science, Multidisciplinary
Huimin Wen, Jiajing He, Jin Hong, Shenbao Jin, Zhenming Xu, Hong Zhu, Jingquan Liu, Gang Sha, Fangyu Yue, Yaping Dan
ADVANCED OPTICAL MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Kaixiang Chen, Chufan Zhang, Xiaoxian Zang, Fuyuan Ma, Yuanzhen Chen, Yaping Dan
Summary: Coating graphene with quantum dots enhances light absorption and leads to high photogain. Light illumination narrows down the surface depletion region, creating a photovoltage that gates the graphene, resulting in high photogain in graphene.
Article
Materials Science, Multidisciplinary
Xingyan Zhao, Kaiman Lin, Sai Gao, Huayou Liu, Jiajing He, Xiaoming Wang, Huimin Wen, Yaping Dan
Summary: Silicon-based infrared photodetectors have limited spectral bandwidth, but there are promising approaches being developed to extend their capabilities, such as Er/O doped silicon.
ADVANCED MATERIALS TECHNOLOGIES
(2021)
Article
Chemistry, Multidisciplinary
Jiajing He, Huayou Liu, Chulin Huang, Yueyang Jia, Kai Li, Abdelmadjid Mesli, Rui Yang, Yongning He, Yaping Dan
Summary: This article investigates the transient photoresponses of nanowire photoconductors and concludes that despite having high gains, they will never outperform typical PIN photodiodes in terms of gain-bandwidth product.
Article
Engineering, Electrical & Electronic
Kai Li, Jiajing He, Wenyu Zhang, Huayou Liu, Yaping Dan
Summary: In this work, the explicit photogain theory was employed to study the physics in nanodevices at a single device level. By fitting the theory to experimental results, important device parameters were obtained, which are often difficult to calibrate using traditional techniques. The proposed technique is simple, nondestructive, and accurate enough for probing the physics in nanodevices.
IEEE ELECTRON DEVICE LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Shannan Chang, Jiajing He, Slawomir Prucnal, Jieyin Zhang, Jianjun Zhang, Shengqiang Zhou, Manfred Helm, Yaping Dan
Summary: In this work, a delta-doping layer was formed in silicon by using flash lamp annealing to treat PCl3 monolayers grafted on silicon surfaces. The atomically thin (<1 nm) delta-doping layer exhibited a metallic state with a weak localization phenomenon, indicating the formation of a two-dimensional electron gas. By forming such an n-type delta-doping layer on a highly doped p-type Si substrate, a highly sensitive solar-blind UV photodetector was created.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Biochemical Research Methods
Roozbeh Abedini-Nassab, Zahra Aldaghi, Yaping Dan
Summary: This study focuses on the precise positioning of magnetic particles and magnetized cells in a microfluidic environment. By optimizing the geometry of capacitors, a magnetic particle transport platform was designed and demonstrated, showing efficient storage and transportation of particles and cells.
Article
Optics
Xiaobo Li, Xin Chen, Ning Wei, Chenduan Chen, Zhan Yang, Haijiao Xie, Jiajing He, Ningning Dong, Yaping Dan, Jun Wang
Summary: This study explores the wavelength-dependent and pulse-width-dependent nonlinear optical properties of liquid-phase exfoliated MoSSe nanosheets. The results show that the saturable absorption response of MoSSe nanosheets in the visible region is better than that in the near-infrared region, and the response under longer pulse excitation is better. Furthermore, a phase modulator integrated with a monolayer MoSSe into a silicon slot waveguide is designed and optimized to achieve high optical extinction. MoSSe exhibits satisfactory nonlinear optical properties and has excellent potential for applications in optoelectronic devices.
Article
Nanoscience & Nanotechnology
Shannan Chang, Chufan Zhang, Kai Li, Yaping Dan
Summary: Unintentional C-related contamination can negatively affect the electrical activity of dopants in self-assembled molecular monolayer doping. This paper introduces a low temperature oxidation method to remove carbon contamination before the rapid thermal annealing process, resulting in increased electrical activity of phosphorus.
Article
Materials Science, Multidisciplinary
Huan Liu, Ulrich Kentsch, Fangyu Yue, Abdelmadjid Mesli, Yaping Dan
Summary: Erbium-implanted silicon system shows low luminescence efficiency at room temperature, hindering its potential as electrically pumped light sources. In this article, a complete methodology was established to quantitatively describe the energy transfer processes from silicon to erbium. The study revealed important physical parameters such as energy transfer efficiency, PhotoLuminescence Quantum Yield, and optically active erbium concentration. The high defect density in the system was identified as the limiting factor for efficient erbium emission.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Engineering, Electrical & Electronic
Huayou Liu, Yaping Dan
Summary: Low-dimensional photoconductors have high photogain, but the classical photogain theory is based on misplaced assumptions. We developed a new explicit photogain theory for silicon nanowires' photoresponses and validated it using Silvaco TCAD software. We studied the impact of surface states and fixed charges density on channel-continuous and channel-pinched-off nanowires.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Engineering, Electrical & Electronic
Kai Li, Jie-Yin Zhang, Shannan Chang, Hao Wei, Jian-Jun Zhang, Yaping Dan
Summary: By using carbon-free phosphorus chloride (PCl3) molecules as dopant carrier molecules, carbon contamination can be avoided, and the dopant activation rate can be close to full activation, even for samples with low doping concentration.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Chufan Zhang, Meng Peng, Weida Hu, Yaping Dan
ACS APPLIED ELECTRONIC MATERIALS
(2020)
