Results 41 to 50 of about 4,208,561 (328)

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

Detection of Single Ion Spectra by Coulomb Crystal Heating

, 2010
The coupled motion of ions in a radiofrequency trap has been used to connect the frequency- dependent laser-induced heating of a sympathetically cooled spectroscopy ion with changes in the fluorescence of a laser-cooled control ion.
C. Ricardo Viteri, Craig R. Clark, E. Arimondo, James E. Goeders, Kenneth R. Brown, N. Kjærgaard, Yatis K. Dodia   +6 more
core   +1 more source

Kilohertz-resolution spectroscopy of cold atoms with an optical frequency comb [PDF]

, 2006
We have performed sub-Doppler spectroscopy on the narrow intercombination line of cold calcium atoms using the amplified output of a femtosecond laser frequency comb.
Coq, Y. Le, Diddams, S. A., Fortier, T. M., Hollberg, L., Oates, C. W., Ortega, D., Stalnaker, J. E.   +6 more
core   +2 more sources

Infrared laser sampling of low volumes combined with shotgun lipidomics reveals lipid markers in palatine tonsil carcinoma

Molecular Oncology, EarlyView.
Nanosecond infrared laser (NIRL) low‐volume sampling combined with shotgun lipidomics uncovers distinct lipidome alterations in oropharyngeal squamous cell carcinoma (OPSCC) of the palatine tonsil. Several lipid species consistently differentiate tumor from healthy tissue, highlighting their potential as diagnostic markers.
Leonard Kerkhoff, Manuela Moritz, Dennis Eggert, Anna Worthmann, Joerg Heeren, Henrike Zech, Till S. Clauditz, Waldemar Wilczak, Hartmut Schlüter, Christian S. Betz, Arne Böttcher, Jan Hahn   +11 more
wiley   +1 more source

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

On the effects of using CO2 and F2 lasers to modify the wettability of a polymeric biomaterial. [PDF]

, 2010
Enhancement of the surface properties of a material by means of laser radiation has been amply demonstrated previously. In this work a comparative study for the surface modification of nylon 6,6 has been conducted in order to vary the wettability ...
Arefi-Khonsari, Ball, Benson, C.D. Walton, Chen, Cheng, D.G. Waugh, Hao, Harnett, J. Lawrence, Jung, Jung, Kietzig, Kim, Lawrence, Lawrence, Lee, Ma, Mirzadeh, Ouhlal, Pappas, Pfleging, R.B. Zakaria, Rance, Sarantopoulou, Skordoulis, Speranza, Tiaw, Waugh, Wu, Yoon, Yu, Zhao, Zorba   +33 more
core   +1 more source

Advances in Laser-Induced Breakdown Spectroscopy analysis for geology: A critical review

Spectrochimica Acta Part B: Atomic Spectroscopy, 2020
The review focuses on the most relevant advances and is reported in different sections relative to the analyzed objects (identification of rocks/minerals and sourcing; resources applications; slurry and drill cores; rare earth elements; light elements ...
C. Fabre
semanticscholar   +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

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

Parametric Excitation of Ultracold Sodium Atoms in an Optical Dipole Trap

Photonics, 2022
Parametric modulation is an effective tool to measure the trap frequency and investigate the atom dynamics in an optical dipole trap or lattices. Herein, we report on experimental research of parametric resonances in an optical dipole trap. By modulating
Ningxuan Zheng, Wenliang Liu, Jizhou Wu, Yuqing Li, Vladimir Sovkov, Jie Ma   +5 more
doaj   +1 more source