Results 1 to 10 of about 457,416 (305)

Multidimensional time-of-flight spectroscopy [PDF]

The Journal of Chemical Physics, 2021
Experimental methods based on a wide range of physical principles are used to determine carrier mobilities for light-harvesting materials in photovoltaic cells. For example, in a time-of-flight experiment, a single laser pulse photoexcites the active layer of a device, and the transit time is determined by the arrival of carriers at an acceptor ...
Zhenyu Ouyang, Ninghao Zhou, Meredith G. McNamee, Liang Yan, Olivia F. Williams, Wei You, Andrew M. Moran   +6 more
openaire   +2 more sources

Characterizing the Layer Structures of the Lacquerware From the Palace Museum by Terahertz Imaging in Reflection Geometry

Frontiers in Physics, 2021
Chinese lacquerware is an important invention of arts and crafts in China. In this study, Chinese lacquerware is characterized using terahertz reflectometric imaging.
Hongfei Zhang, Yuanmeng Zhao, Chenyu Li, Cunlin Zhang   +3 more
doaj   +1 more source

2-D Optical-CDMA Modulation With Hard-Limiting for Automotive Time-of-Flight LiDAR

IEEE Photonics Journal, 2021
In this proof-of-principle paper, the application of 2-D optical code-division multiple-access (OCDMA) modulation to long-range automotive time-of-flight (ToF) light detection and ranging (LiDAR) is studied.
Feng-Wen Lo, Guu-Chang Yang, Wei-Yi Lin, Ivan Glesk, Wing C. Kwong   +4 more
doaj   +1 more source

Contactless Vital Sign Monitoring System for Heart and Respiratory Rate Measurements with Motion Compensation Using a Near-Infrared Time-of-Flight Camera

Applied Sciences, 2021
This study describes a contactless vital sign monitoring (CVSM) system capable of measuring heart rate (HR) and respiration rate (RR) using a low-power, indirect time-of-flight (ToF) camera.
Kaiwen Guo, Tianqu Zhai, Elton Pashollari, Christopher J. Varlamos, Aymaan Ahmed, Mohammed N. Islam   +5 more
doaj   +1 more source

TIMo—A Dataset for Indoor Building Monitoring with a Time-of-Flight Camera

Sensors, 2022
We present TIMo (Time-of-flight Indoor Monitoring), a dataset for video-based monitoring of indoor spaces captured using a time-of-flight (ToF) camera. The resulting depth videos feature people performing a set of different predefined actions, for which ...
Pascal Schneider, Yuriy Anisimov, Raisul Islam, Bruno Mirbach, Jason Rambach, Didier Stricker, Frédéric Grandidier   +6 more
doaj   +1 more source

Towards Higher Sensitivity of Mass Spectrometry: A Perspective From the Mass Analyzers

Frontiers in Chemistry, 2021
Mass spectrometry (MS) is one of the most widely used analytical techniques in many fields. Recent developments in chemical and biological researches have drawn much attention to the measurement of substances with low abundances in samples.
Chang Li, Shiying Chu, Siyuan Tan, Xinchi Yin, You Jiang, Xinhua Dai, Xiaoyun Gong, Xiang Fang, Di Tian   +8 more
doaj   +1 more source

Planar Gas Expansion under Intensive Nanosecond Laser Evaporation into Vacuum as Applied to Time-of-Flight Analysis

Entropy, 2022
A computational investigation of the dynamics of gas expansion due to intense nanosecond laser evaporation into vacuum has been carried out. The problem is solved in a one-dimensional approximation, which simplifies calculations and at the same time ...
Alexey Morozov, Vladimir Titarev
doaj   +1 more source

Time-of-Flight Microwave Camera [PDF]

Scientific Reports, 2015
AbstractMicrowaves can penetrate many obstructions that are opaque at visible wavelengths, however microwave imaging is challenging due to resolution limits associated with relatively small apertures and unrecoverable “stealth” regions due to the specularity of most objects at microwave frequencies.
Temme, Andrew, Raskar, Ramesh, Charvat, Gregory L., Feigin, Micha   +3 more
openaire   +4 more sources

Characteristic Analysis of Flight Delayed Time Series

Journal of Intelligent Systems, 2020
In order to analyze the characteristics of airport flight delayed time series, based on the construction of flight delay time series, firstly, the K-means algorithm is used to cluster the time series of delayed departures.
Lan Ma, Shangheng Ou
doaj   +1 more source

Towards a Multi-Perspective Time of Flight Laser Ranging Device Based on Mirrors and Prisms

Applied Sciences, 2022
This paper investigates the feasibility of redirecting the field of view (FOV) of a light-based time-of-flight (ToF) ranging device, commonly known as a pulsed lidar, using fixed mirrors and prisms for possible future use in robotics.
Luka Pogačnik, Marko Munih
doaj   +1 more source