Article
Chemistry, Inorganic & Nuclear
Yichao Wang, Changqing Feng, Maoyuan Zhao, Chenyu Shan, Feng Liu, Qingxin Lei, Ziheng Zhou, Shubin Liu
Summary: This paper presents a portable gamma-ray spectrometer for real-time and in-situ gamma-ray detection applications. By combining a quasi-hemispherical CdZnTe (CZT) semiconductor detector and a Geiger-Muller (GM) counter, a wide dose rate range is achieved with a relative error of less than 10%. The spectrometer provides high energy resolution spectrum for nuclide identification and high precision dose rate at low dose rates.
APPLIED RADIATION AND ISOTOPES
(2023)
Article
Biochemical Research Methods
Dominic A. Helmerich, Gerti Beliu, Danush Taban, Mara Meub, Marcel Streit, Alexander Kuhlemann, Soeren Doose, Markus Sauer
Summary: This study demonstrates the use of time-resolved detection and photoswitching fingerprinting analysis to determine the number and distance of closely spaced fluorophores within the sub-10-nm range. The study also reveals the impact of resonance energy transfer between fluorophores on the localization probabilities of sub-10-nm fluorescence imaging.
Article
Nuclear Science & Technology
Shuai Gao, Jin-Hu Yang, Bing Ye, Chang Cai, Ze He, Jie Liu, Tian-Qi Liu, Xiao-Yu Yan, You-Mei Sun, Guo-Qing Xiao
Summary: In this study, the different impacts and mechanisms of high-energy and medium-energy heavy ions on MBUs in 28 nm FPGAs were investigated. The results showed that high-energy heavy ions have a more severe impact on MBUs and can result in different MBU sizes in radiation of different dimensions.
NUCLEAR SCIENCE AND TECHNIQUES
(2022)
Article
Environmental Sciences
Yutong Jia, Lei Liu, Siqing Peng, Mingyang Feng, Gang Wan
Summary: In this paper, a new deep-learning method called high-resolution global-local networks (HR-GLNet) is proposed to explore lunar craters and rilles and to discover space energy simultaneously. The model, combined with transfer learning methods, can accurately detect lunar craters, Mars craters, and lunar rilles with higher accuracy and recall rate compared to other networks.
Article
Optics
Yingzhi Li, Baisong Chen, Quanxin Na, Qijie Xie, Min Tao, Lanxuan Zhang, Zihao Zhi, Yuxuan Li, Xiaobin Liu, Xianshu Luo, Guoqiang Lo, Fengli Gao, Xueyan Li, Junfeng Song
Summary: Optical phased array (OPA) technology is seen as a promising solution for solid-state beam steering, but faces challenges such as cross talk and complexity in control systems. To address these issues, we designed high-performance OPAs with a wide steering angle and high resolution on a multilayered SiN-on-SOI platform, achieving a large aperture with a relatively low count of waveguides.
PHOTONICS RESEARCH
(2021)
Article
Chemistry, Analytical
Liwei Sun, Chunsheng Li
Summary: A novel imaging system based on tandem SAR satellites is proposed in this paper, which combines scanning mode and undersampled echo to achieve high resolution and wide swath imaging simultaneously.
Article
Optics
Xu Yang, Chao Geng, Feng Li, Xiaoyang Li, Jing Zuo, Jiali Jiang, Bincheng Li, Xinyang Li
Summary: This paper presents a novel beam scanning system utilizing an adaptive fiber-optics collimator (AFOC) to achieve continuous scanning capability and high resolution, overcoming the limitations of discrete diffraction angles in conventional systems. By introducing AFOC, the system demonstrates continuous high-resolution scanning capacity in both theoretical simulations and experimental results, with potential applications in various fields such as space optical communication, optical interconnection, power projection, and coherent beam combining.
Article
Chemistry, Analytical
Leonardo Abbene, Fabio Principato, Antonino Buttacavoli, Gaetano Gerardi, Manuele Bettelli, Andrea Zappettini, Saverio Altieri, Natalia Auricchio, Ezio Caroli, Silvia Zanettini, Nicoletta Protti
Summary: Our group has developed new high-resolution CZT drift strip detectors for room temperature gamma-ray spectroscopic imaging. These detectors have excellent spectroscopic performance and potential applications in BNCT.
Article
Optics
Lintao Peng, Liheng Bian, Tiexin Liu, Jun Zhang
Summary: This study presents an agile wide-field imaging framework with selective high resolution, requiring only two detectors. By leveraging the statistical sparsity prior of natural scenes, it uses a short-focal camera for low-resolution imaging and a long-focal camera for high-resolution imaging of regions of interest (ROI), enabling real-time tracking of ROI.
Article
Chemistry, Physical
Rui Xin, Edirisuriya M. D. Siriwardane, Yuqi Song, Yong Zhao, Steph-Yves Louis, Alireza Nasiri, Jianjun Hu
Summary: The study introduces an active generative inverse design method that combines active learning with deep autoencoder neural network and generative adversarial deep neural network model to discover new materials with a target property in the whole chemical design space. This approach led to the discovery of new thermodynamically stable materials with high band gap and semiconductors with specified band gap ranges, which were verified by first-principles DFT calculations.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Materials Science, Multidisciplinary
Umut T. Sanli, Tobias Messer, Markus Weigand, Lars Lotgering, Gisela Schutz, Martin Wegener, Christian Kern, Kahraman Keskinbora
Summary: This study successfully fabricated X-ray optics with higher resolution using a custom-built 3D laser lithography system and verified it through microscopy imaging. This is of significant importance for high-resolution X-ray microscopy and has the potential to reduce the manufacturing cost of X-ray lenses.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Chemistry, Multidisciplinary
Runhui Zhou, Yufei Zhang, Fan Xu, Zhuoyu Song, Jiaoya Huang, Zemin Li, Chen Gao, Jiang He, Wenchao Gao, Caofeng Pan
Summary: Strain sensors for wearable devices face a challenge in balancing high resolution, sensitivity, and detection range. A novel design using hierarchical synergistic structure (HSS) of Au micro cracks and carbon black nanoparticles overcomes this challenge, resulting in a strain sensor with high sensitivity, strain resolution, broad detection range, stability, and response speed. The sensor is successfully used to monitor carotid pulse signals during body movement, showcasing its potential in health monitoring, human-machine interface, human motion detection, and electronic skin applications.
Article
Nanoscience & Nanotechnology
Gwenaelle Pound-Lana, Philippe Bezard, Camille Petit-Etienne, Sebastien Cavalaglio, Gilles Cunge, Benjamin Cabannes-Boue, Guillaume Fleury, Xavier Chevalier, Marc Zelsmann
Summary: This study developed full dry-etching strategies for BCP nanolithography and explored the application of different plasma in the process. The analysis of different interfacial layers and their effects under different plasma conditions was conducted. Finally, these features were successfully transferred to different substrates.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Business, Finance
Joel Hasbrouck
Summary: This study applies long distributed lag models, computations taking advantage of the sparsity of price transitions, and bridged modeling to estimate models for equity market data at different resolutions for IBM and NVDA stocks. The research findings show that at higher resolutions, information shares between listing exchanges and non-listing exchanges become more distinct, while quotes and lit trades play a key role in price discovery.
JOURNAL OF FINANCIAL ECONOMETRICS
(2021)
Article
Optics
Gang Li, Lanting Ji, Guoqiang Li, Qingquan Sun, Dexin Gao, Shanshan Zhao, Juan Su, Chi Wu
Summary: The sensor utilizes a fiber Bragg grating Fabry-Perot cavity combined with beat frequency interrogation, providing high-resolution and wide-range temperature measurement. With the introduction of a reference frequency, the sensor demonstrates good long-term stability. It is suitable for fields where resolving slight temperature changes is crucial.