Results 31 to 40 of about 244,861 (311)

Spectrally encoded parallel LiDAR driven by super-bunching light

Nature Communications
Parallel light detection and ranging (LiDAR) is widely adopted for its low computational burden and rapid three-dimensional (3D) reconstruction. Yet, it remains constrained by inter-channel crosstalk and limited long-distance performance.
Xuedong Zhang, Xinghui Liu, Xiangdong Li, Yuanyuan Li, Yunrui Song, Aoni Wei, Kaige Hu, Wenxue Zhang, Zhichun Yang, Jianyong Hu, Ruiyun Chen, Guofeng Zhang, Jie Ma, Liantuan Xiao, Suotang Jia, Chengbing Qin   +15 more
doaj   +1 more source

Impact of Humidity on Quartz-Enhanced Photoacoustic Spectroscopy Based CO Detection Using a Near-IR Telecommunication Diode Laser

Sensors, 2016
A near-IR CO trace gas sensor based on quartz-enhanced photoacoustic spectroscopy (QEPAS) is evaluated using humidified nitrogen samples. Relaxation processes in the CO-N2-H2O system are investigated.
Xukun Yin, Lei Dong, Huadan Zheng, Xiaoli Liu, Hongpeng Wu, Yanfang Yang, Weiguang Ma, Lei Zhang, Wangbao Yin, Liantuan Xiao, Suotang Jia   +10 more
doaj   +1 more source

Enhanced sunlight driven photocatalytic activity of In2S3 nanosheets functionalized MoS2 nanoflowers heterostructures

Scientific Reports, 2021
Visible light-sensitive 2D-layered based photocatalytic systems have been proven one of the effective recent trends. We report the preparation of a 2D-layered based In2S3–MoS2 nanohybrid system through a facile hydrothermal method, capable of efficiently
Jaspal Singh, R. K. Soni
doaj   +1 more source

Lifetime Measurement of Cesium Atoms Using a Cold Rydberg Gas

Applied Sciences, 2022
The lifetimes of nS1/2 and nD5/2 (n = 60–83) cesium Rydberg states are measured accurately in a magneto-optical trap using the field ionization technique and analyzed with the existing theoretical model. The room temperature blackbody radiation (BBR) and
Rong Song, Jingxu Bai, Yuechun Jiao, Jianming Zhao, Suotang Jia   +4 more
doaj   +1 more source

Raman‐based label‐free microscopic analysis of the pancreas in living zebrafish larvae

FEBS Open Bio, EarlyView.
Forward stimulated Raman scattering (F‐SRS) and epi coherent anti‐Stokes Raman scattering (E‐CARS) allow label‐free discrimination of distinct subcellular structures in the pancreas of living zebrafish larvae. Given the straightforward applicability, we anticipate broad implementation of Raman microscopy in other organs and across various biomedical ...
Noura Faraj, Eline M. F. de Lange, Klaas A. Sjollema, Ben N. G. Giepmans   +3 more
wiley   +1 more source

Efficient fiber-laser pumped Ho:LuLiF₄ laser [PDF]

We present results for an efficient Ho:LuLiF4 laser in-band pumped by a cladding-pumped Tm-doped silica fiber laser. The polarized, tunable Tm-doped silica fiber-laser operates at 1938 nm, ideally suited for in-band pumping the 40 mm long weakly-doped (0.
Veronesi, S., Parisi, D., Clarkson, W.A., Tonelli, M., Kim, J.W., Mackenzie, J.I.   +5 more
core   +1 more source

Quantitative analysis of aluminum impurities in zinc alloy by laser-induced breakdown spectroscopy [PDF]

, 2019
Laser-induced breakdown spectroscopy has been employed for the spectroscopic study of a laser-produced Zn alloy plasma for the analysis of Al impurities in Zn alloy. The laser-produced Zn alloy plasma was generated by a pulsed Nd:YAG laser (105 mJ, 3 ns),
Kim, DE, Oh, KJ, Kim, DW, Yoo, KJ, Park, HK   +4 more
core   +1 more source

Design and implementation of a TDLAS methane detection system based on FPGA

Dianzi Jishu Yingyong
Tunable Diode Laser Absorption Spectroscopy (TDLAS) is widely applied in gas concentration measurements due to its high sensitivity. However, its detection performance is often limited by laser stability and the signal processing capability of the lock ...
Zhang Yanqun, Jing Wanyang, Su Dianqiang, Ji Zhonghua, Ma Weiguang, Zhao Yanting   +5 more
doaj   +1 more source

Quartz Enhanced Conductance Spectroscopy for Polymer Nano-Mechanical Thermal Analysis

Applied Sciences, 2020
A fast and highly sensitive polymer nano-mechanical thermal analysis method for determining the melting temperature (Tm) of polymer microwires was proposed.
Shangzhi Li, Bo Sun, Zhijin Shang, Biao Li, Ruyue Cui, Hongpeng Wu, Lei Dong   +6 more
doaj   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source