Results 21 to 30 of about 10,998 (252)

Ultrafast Laser-Based Spectroscopy and Sensing: Applications in LIBS, CARS, and THz Spectroscopy

Sensors, 2010
Ultrafast pulsed lasers find application in a range of spectroscopy and sensing techniques including laser induced breakdown spectroscopy (LIBS), coherent Raman spectroscopy, and terahertz (THz) spectroscopy.
Megan R. Leahy-Hoppa, Joseph Miragliotta, Robert Osiander, Jennifer Burnett, Yamac Dikmelik, Caroline McEnnis, James B. Spicer   +6 more
doaj   +1 more source

Deep spectral CNN for laser induced breakdown spectroscopy [PDF]

Spectrochimica Acta Part B: Atomic Spectroscopy, 2021
This work proposes a spectral convolutional neural network (CNN) operating on laser induced breakdown spectroscopy (LIBS) signals to learn to (1) disentangle spectral signals from the sources of sensor uncertainty (i.e., pre-process) and (2) get qualitative and quantitative measures of chemical content of a sample given a spectral signal (i.e ...
Juan Castorena, Diane Oyen, Ann Ollila, Carey Legget, Nina Lanza   +4 more
openaire   +2 more sources

A Review of Femtosecond Laser-Induced Emission Techniques for Combustion and Flow Field Diagnostics

Applied Sciences, 2019
The applications of femtosecond lasers to the diagnostics of combustion and flow field have recently attracted increasing interest. Many novel spectroscopic methods have been developed in obtaining non-intrusive measurements of temperature, velocity, and
Bo Li, Dayuan Zhang, Jixu Liu, Yifu Tian, Qiang Gao, Zhongshan Li   +5 more
doaj   +1 more source

Design and development of a LIBS system on linear plasma device PSI-2 for in situ real-time diagnostics of plasma-facing materials

Nuclear Materials and Energy, 2017
Laser induced breakdown spectroscopy (LIBS) is a strong candidate for detecting and monitoring the H/D/T content on the surface of plasma facing components (PFCs) due to its capability of fast direct in situ measurement in extreme environment (e.g ...
X. Jiang, G. Sergienko, B. Schweer, N. Gierse, M. Hubeny, A. Kreter, S. Brezinsek, Ch. Linsmeier   +7 more
doaj   +1 more source

The applications of the in situ laser spectroscopy to the deep-sea cold seep and hydrothermal vent system

Solid Earth Sciences, 2020
Cold seep and hydrothermal vent system have unique function in mass circulation of the earth, and have been explored by in situ detection technologies in past decades.
Zengfeng Du, Xin Zhang, Boyang Xue, Zhendong Luan, Jun Yan   +4 more
doaj   +1 more source

Quantitative determination of hydrogen isotopes using laser-induced breakdown spectroscopy

He jishu, 2023
BackgroundLaser-induced breakdown spectroscopy (LIBS) is a new technology for testing and analyzing the composition and content of elements in materials.PurposeThis study aim to determine the content and distribution of hydrogen isotopes in hydrogen ...
XING Yubo, ZOU Zhiping, YANG Ruizhu, MA Wei, ZOU Liping, LU Liang, YANG Zhen   +6 more
doaj   +1 more source

A Brief Review of Calibration-Free Laser-Induced Breakdown Spectroscopy

Frontiers in Physics, 2022
The calibration-free laser-induced breakdown spectroscopy (CF-LIBS) technique requires no reference samples of the same matrix to establish the calibration curve, not affected by the matrix effect.
Ning Zhang, Tianxue Ou, Meng Wang, Zhanjian Lin, Chao Lv, Yuzhi Qin, Jiaming Li, Huan Yang, Nan Zhao, Qingmao Zhang   +9 more
doaj   +1 more source

Precipitation Simulations of the O‐Phase in Ti2AlNb Alloys Processed by Laser Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Simulated and experimental evolution of the O‐phase volume fraction during postprocessing of a Ti‐21Al‐25Nb (at.%) alloy processed by laser powder bed fusion. With results of sensitivity to input parameters from a thorough and quantified analysis, the interfacial energy matrix/precipitate is the most relevant input parameter for the simulation of the O‐
Silvana Tumminello, Joachim Gussone, Suzana G. Fries, Marcus Rackel, Andreas Stark, Norbert Schell, Jan Haubrich, Guillermo Requena   +7 more
wiley   +1 more source

A Practical Noise2Noise Denoising Pipeline for High‐Throughput Raman Spectroscopy

Advanced Engineering Materials, EarlyView.
A lightweight and reproducible denoising pipeline for high‐throughput Raman spectroscopy is introduced, based on a 1D convolutional autoencoder trained with a Noise2Noise strategy. Using only repeated short‐exposure acquisitions, the method suppresses stochastic noise without reference spectra, enabling reliable spectral reconstruction while preserving
David Martin‐Calle, Cesar Alvarez‐Llamas, Vincent Motto‐Ros, Christophe Dujardin, Jérémie Margueritat, David Rodney   +5 more
wiley   +1 more source

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

Advanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati, Karthik Kumar Banku, Prasanth Bondi, Ivan Zhirnov, Yangyiwei Yang, Gordon Schmidt, Jürgen Christen, Georg Hasemann, Manja Krüger, Bai‐Xiang Xu, Bilal Gökce, Silja‐Katharina Rittinghaus   +11 more
wiley   +1 more source