Article
Multidisciplinary Sciences
Dmitry P. P. Fedchenko, Petr N. N. Kim, Ivan V. V. Timofeev
Summary: Total internal reflection occurs at the interface between two media with different refractive indices. This study explores a two-dimensional photonic topological insulator in an array of transparent prism resonators with a narrow gap between them. The array allows for the generation of new edge solutions based on frustrated total internal reflection.
Article
Chemistry, Analytical
Chongqi Zhou, Yang Xu, Xiaonan Zhang, Zhangyan Li, Tian Guan, Yanhong Ji, Yanhong Ji
Summary: A modified weak measurement scheme, rotatory biased weak measurement, is proposed to significantly improve the sensitivity and resolution of the total internal reflection sensor. The method introduces an additional phase in the post-selected procedure and generates an extinction point in the spectrum distribution. The performance of the sensor is analyzed, and an optimal refractive index resolution of 4 x 10(-7) RIU is demonstrated.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Analytical
Hongqi Chen, Wanying Xia, Qian Gao, Lun Wang
Summary: A fast and efficient quantitative image analysis method has been developed for the determination of HSO3- concentration, using upconversion nanoparticles and cyanine dye molecules to build a luminescence energy transfer system. The method significantly reduces sample consumption, allows for quick and efficient analysis, and shows a wider linear range, lower detection limit, and higher detection speed compared to the classical luminescence spectrometer.
Article
Optics
Lingling Ma, Chaoyi Li, Luyao Sun, Zhenpeng Song, Yanqing Lu, Bingxiang Li
Summary: Submicrosecond switching of chiral liquid crystals (LCs) with 1D photonic microstructures is reported, enabling fast shift of the photonic bandgap by modifying the refractive indices. This work offers tremendous opportunities for soft photonic applications.
PHOTONICS RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Ye-Ri Kim, Na-Ra Wi, Soo-Young Park
Summary: The shape of reactive cholesteric liquid crystal (rCLC)/fluorocarbon oil (FCO) droplets prepared by microfluidic method depends on the balance of interfacial energies, and complex-shaped droplets can be prepared by controlling the concentration of surfactants. These complex-shaped droplets exhibit photonic patterns and have potential as anticounterfeiting materials.
Article
Chemistry, Analytical
Yves Blickenstorfer, Linda Borghi, Andreas Michael Reichmuth, Christof Fattinger, Janos Voros, Andreas Frutiger
Summary: Focal molography is a sensitive biosensor technology for studying biomolecular interactions, which is almost insensitive to environmental noise. This study proposes a simpler and more robust configuration for focal molography based on total internal reflection, showing excellent resolution and robustness in real-time binding analysis.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Materials Science, Biomaterials
Su Jiang, Xinyi Zhang, Dong-Ling Li, Ting-Ting Wang, Fei Ma, Chun-Yang Zhang
Summary: The article introduces a single-molecule biosensor based on gold nanoparticles for simple and sensitive detection of Ago2 activity. The Ago2-responsive AuNP nanoprobe is constructed by self-assembling multiple signal probes onto the AuNP, and the release of Cy5 molecules from the AuNP nanoprobe induced by active RISC formation can be quantified by single-molecule counting. This method achieves good specificity and high sensitivity, and has potential applications in Ago2 inhibitor screening, Ago2 kinetic analysis, and intracellular Ago2 activity imaging.
JOURNAL OF MATERIALS CHEMISTRY B
(2022)
Article
Engineering, Electrical & Electronic
Mahmoud Salman S. Ibrahim, M. Kotb G. Hamed, Mohammed M. El-Okr, S. S. A. Obayya, Mohamed Farhat O. Hameed
Summary: A highly sensitive 2D Si photonic crystal sensor is proposed for gamma-ray dose detection in the visible light region, achieving high sensitivity, linearity, and quality factor. The sensor design includes a cavity filled with a polymer doped with dyes and the analysis is conducted using finite-element and plane wave expansion methods. This is the first application of 2D-PhC technology for gamma-ray detection.
OPTICAL AND QUANTUM ELECTRONICS
(2021)
Article
Biochemistry & Molecular Biology
Joerg Nikolaus, Kasey Hancock, Maria Tsemperouli, David Baddeley, Erdem Karatekin
Summary: Researchers used a polarization-controlled total internal reflection fluorescence (pTIRF) microscope to monitor the fusion of proteoliposomes with planar lipid bilayers, investigating membrane fusion pore dynamics. By varying excitation polarization angle, they identified a dye-dependent optimal polarization for maximal fluorescence increase upon fusion, aiding event detection and lipid transfer kinetics analysis.
FRONTIERS IN MOLECULAR BIOSCIENCES
(2021)
Article
Materials Science, Multidisciplinary
Zhiqun Xu, Guobin Huang, Yu Zhao, Xia Xu, Yufeng Zhao
Summary: In this study, a novel molecularly imprinted fluorescence nanoprobe polymer was successfully synthesized, which showed high selectivity and sensitivity for the detection of small molecules.
Article
Nanoscience & Nanotechnology
Zhonghe Liu, Yudong Chen, Xiaochen Ge, Weidong Zhou
Summary: This paper presents a novel design of suspended arrays of PCNB cavities with lateral fins, which can be tuned for desired performance by controlling the alignment position of the fins. The proposed cavities are advantageous for energy efficient and ultra-compact photonics devices.
Article
Biotechnology & Applied Microbiology
Hayden C. Metsky, Nicole L. Welch, Priya P. Pillai, Nicholas J. Haradhvala, Laurie Rumker, Sreekar Mantena, Yibin B. Zhang, David K. Yang, Cheri M. Ackerman, Juliane Weller, Paul C. Blainey, Cameron Myhrvold, Michael Mitzenmacher, Pardis C. Sabeti
Summary: The design of nucleic acid-based viral diagnostics typically follows heuristic rules, but researchers have proposed an optimized design method using a learned model to enhance diagnostic effectiveness in the face of viral variation. By utilizing a deep neural network and combinatorial optimization, the researchers successfully designed highly sensitive diagnostic tools that can be customized for various vertebrate-infecting viral species within a short period of time.
NATURE BIOTECHNOLOGY
(2022)
Article
Chemistry, Analytical
Teliang Zhang, Xueliang Wang, Youjun Zeng, Songfeng Huang, Xiaoqi Dai, Weifu Kong, Qian Liu, Jiajie Chen, Junle Qu, Yonghong Shao
Summary: Surface plasmon resonance microscopy (SPRM) is widely used in biological fields for its high spatial resolution and label-free detection. In this study, a home-built SPRM system based on total internal reflection (TIR) was utilized to study the imaging of a single nanoparticle. By using a ring filter and deconvolution algorithm, the parabolic tail of the nanoparticle image was removed, achieving a spatial resolution of 248 nm. Additionally, specific binding between human IgG antigen and goat anti-human IgG antibody was successfully measured using TIR-based SPRM, demonstrating its capability in imaging sparse nanoparticles and monitoring biomolecular interactions.
Article
Polymer Science
Ami Amano, Toshimitsu Kanai
Summary: We demonstrate the ability to control both the optical stopband wavelength and effective bandwidth of gel-immobilized loosely packed colloidal photonic crystals. By photopolymerizing the gelation reagent of charge-stabilized colloidal crystals under different upper- and bottom-light intensities, we obtain a gel-immobilized film with broadened Bragg reflection peak. Furthermore, by varying the swelling solvent concentration, we can vary the Bragg wavelength over a wide range while maintaining the same broadened effective bandwidth.
Article
Chemistry, Physical
Jing Zeng, Wen Fan, Kangyu Jia, Shuhua Tu, Limin Wu
Summary: A novel retroreflective structural color film (RSCF) based on interference and total internal reflection (TIR) was reported. The film consists of a microscale polymer hemisphere array, displaying different colors under coaxial and noncoaxial illumination and observation. Additionally, an elastic polyurethane-based RSCF can exhibit dynamically changing colors during uniaxial tensile/compressive deformation.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Optics
Miao-Bin Lien, Che-Hung Liu, Il Yong Chun, Saiprasad Ravishankar, Hung Nien, Minmin Zhou, Jeffrey A. Fessler, Zhaohui Zhong, Theodore B. Norris
Article
Physics, Applied
Ramon A. Martinez, Kaiwen Guo, Fred L. Terry, Tianqu Zhai, Mohammed N. Islam, Agustin I. Ifarraguerri
JOURNAL OF APPLIED PHYSICS
(2020)
Article
Optics
Nooshin M. Estakhri, Theodore B. Norris
Summary: The ability of phase-change materials to rapidly switch between two stable phases has led to their incorporation in metasurfaces for controlling optical fields. These structures enable the control of nonclassical two-photon quantum interference, with high switching speeds and no static power consumption. The development of compact and rapidly controllable quantum devices is opening up new possibilities in quantum applications and improving quantum logic gates and other systems.
Article
Multidisciplinary Sciences
Dehui Zhang, Zhen Xu, Zhengyu Huang, Audrey Rose Gutierrez, Cameron J. Blocker, Che-Hung Liu, Miao-Bin Lien, Gong Cheng, Zhe Liu, Il Yong Chun, Jeffrey A. Fessler, Zhaohui Zhong, Theodore B. Norris
Summary: In recent years, new approaches to optical imaging have rapidly evolved, with a focus on extracting three-dimensional information from traditionally two-dimensional image capture. The integration of transparent focal stack imaging systems using graphene photodetector arrays with advanced neural networks has enabled real-time 3D optical imaging and object tracking, showcasing promising new frontiers in imaging technology.
NATURE COMMUNICATIONS
(2021)
Article
Physics, Applied
Zhen Xu, Zhe Liu, Dehui Zhang, Zhaohui Zhong, Theodore B. Norris
Summary: The study reveals rapid electron transfer from graphene to MoS2 and non-exponential back transfer of thermalized electrons from MoS2 to graphene layer, indicating that MoS2 states are localized by disorder and interlayer transfer process is dominated by random coupling.
APPLIED PHYSICS LETTERS
(2021)
Article
Optics
Zhengyu Huang, Jeffrey A. Fessler, Theodore B. Norris
Summary: This research proposes the use of a focal stack camera as a novel secure imaging device for localizing modified regions in manipulated images. The results show that applying convolutional neural network detection methods to focal stack images achieves significantly better detection accuracy.
Article
Multidisciplinary Sciences
Dehui Zhang, Zhen Xu, Gong Cheng, Zhe Liu, Audrey Rose Gutierrez, Wenzhe Zang, Theodore B. Norris, Zhaohui Zhong
Summary: In this study, the authors propose a new hybrid photoconductive switch design by engineering a hot-carrier fast lane using graphene on silicon. This design allows for a high-speed photoconductive switch without sacrificing the generated power.
NATURE COMMUNICATIONS
(2022)
Article
Physics, Applied
Yuanpeng Wu, Ping Wang, Woncheol Lee, Anthony Aiello, Parag Deotare, Theodore Norris, Pallab Bhattacharya, Mackillo Kira, Emmanouil Kioupakis, Zetian Mi
Summary: Both 2D TMDs and III-V semiconductors are potential platforms for quantum technology, but each with its limitations. 2D TMDs have a large exciton binding energy and customizable quantum properties, but compatibility issues with existing industrial processes. On the other hand, III-nitrides have been widely used in light-emitting devices and power electronics but lack exploitation of excitonic quantum aspects. Recent advancements in 2D III-nitrides have shown promise in achieving room-temperature quantum technologies.
APPLIED PHYSICS LETTERS
(2023)
Article
Optics
Zhengyu Huang, Jeffrey A. Fessler, Theodore B. Norris
Summary: In this study, the impact of various camera parameters, including aperture size, sensor resolution, and number of sensor planes, on the depth estimation accuracy of focal stack cameras based on transparent sensors was investigated. The deep learning based depth estimation performance was analyzed and compared between focal stack cameras and light field cameras, providing guidelines for future focal stack camera design.
Proceedings Paper
Acoustics
Zhengyu Huang, Jeffrey A. Fessler, Theodore B. Norris, Il Yong Chun
2020 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING
(2020)
Proceedings Paper
Engineering, Electrical & Electronic
Dehui Zhang, Zhen Xu, Gong Cheng, Zhe Liu, Audrey Rose Gutierrez, Theodore B. Norris, Zhaohui Zhong
2020 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2020)
Proceedings Paper
Engineering, Electrical & Electronic
Zhen Xu, Zhe Liu, Zhaohui Zhong, Theodore B. Norris
2020 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2020)
Proceedings Paper
Optics
Ramon A. Martinez, Kaiwen Guo, Fred L. Terry, Tianqu Zhai, Mohammed N. Islam, Agustin I. Ifarraguerri
OPTICAL BIOPSY XVIII: TOWARD REAL-TIME SPECTROSCOPIC IMAGING AND DIAGNOSIS
(2020)
Proceedings Paper
Optics
Kaiwen Guo, Tianqu Zhai, Brandon Demory, Shawn Z. Meah, Ramon A. Martinez, Mohammed N. Islam, Fred L. Terry, Robert Maynard
OPTICAL BIOPSY XVIII: TOWARD REAL-TIME SPECTROSCOPIC IMAGING AND DIAGNOSIS
(2020)
Proceedings Paper
Optics
Ramon A. Martinez, Kaiwen Guo, Tianqu Zhai, Fred L. Terry, Mohammed N. Islam, Lukasz Maksymiuk, Robert L. Maynard, Michael J. Freeman, Carl A. DeWilde, Agustin I. Ifarraguerri
FIBER LASERS XVI: TECHNOLOGY AND SYSTEMS
(2019)
