Results 21 to 30 of about 841,302 (305)

Transillumination imaging through scattering media by use of photorefractive polymers [PDF]

, 1998
We demonstrate the use of a near-infrared-sensitive photorefractive polymer with high efficiency for imaging through scattering media, using an all-optical holographic time gate. Imaging through nine scattering mean free paths is performed at 800 nm with
Kippelen, B., Marder, S. R., Peyghambarian, N., Röckel, H., Savina, O., Steele, D. D., Volodin, B. L.   +6 more
core   +1 more source

Dose-efficient scanning Compton X-ray microscopy

Light: Science & Applications, 2023
The highest resolution of images of soft matter and biological materials is ultimately limited by modification of the structure, induced by the necessarily high energy of short-wavelength radiation.
Tang Li, J. Lukas Dresselhaus, Nikolay Ivanov, Mauro Prasciolu, Holger Fleckenstein, Oleksandr Yefanov, Wenhui Zhang, David Pennicard, Ann-Christin Dippel, Olof Gutowski, Pablo Villanueva-Perez, Henry N. Chapman, Saša Bajt   +12 more
doaj   +1 more source

A Criterion of Colorectal Cancer Diagnosis Using Exosome Fluorescence-Lifetime Imaging

Diagnostics, 2022
This study was aimed to investigate the applicability of the exosome fluorescence-lifetime imaging microscopy (FLIM) for colorectal cancer (CRC) diagnosis.
Alexey V. Borisov, Olga A. Zakharova, Alisa A. Samarinova, Natalia V. Yunusova, Olga V. Cheremisina, Yury V. Kistenev   +5 more
doaj   +1 more source

Fast wavelength-tunable ultra-violet laser source for confocal Fura-2AM imaging [PDF]

, 2007
We report a novel wavelength-flexible laser source for three-dimensional ultra-violet imaging. Based on supercontinuum generation in photonic crystal fiber, the resultant broadband laser source extended from A = 331 nm into the visible region of the ...
Esposito, E., Harris, J., McConnell, G.
core   +1 more source

Laser-wakefield accelerators as hard x-ray sources for 3D medical imaging of human bone [PDF]

, 2015
A bright μm-sized source of hard synchrotron x-rays (critical energy Ecrit > 30 keV) based on the betatron oscillations of laser wakefield accelerated electrons has been developed.
Abel, RL, Alatabi, S, Bryant, JSJ, Cole, JM, Jin, A, Kneip, S, Lopes, NC, Mangles, SPD, Mecseki, K, Najmudin, Z, Poder, K, Symes, DR, Wood, J   +12 more
core   +1 more source

Measurement and Modeling of the Optical Properties of Adipose Tissue in the Terahertz Range: Aspects of Disease Diagnosis

Diagnostics, 2022
In this paper, the measurement and modeling of optical properties in the terahertz (THz) range of adipose tissue and its components with temperature changes were performed. Spectral measurements were made in the frequency range 0.25–1 THz. The structural
Irina Y. Yanina, Viktor V. Nikolaev, Olga A. Zakharova, Alexei V. Borisov, Konstantin N. Dvoretskiy, Kirill V. Berezin, Vyacheslav I. Kochubey, Yuri V. Kistenev, Valery V. Tuchin   +8 more
doaj   +1 more source

Discovering Glioma Tissue through Its Biomarkers’ Detection in Blood by Raman Spectroscopy and Machine Learning

Pharmaceutics, 2023
The most commonly occurring malignant brain tumors are gliomas, and among them is glioblastoma multiforme. The main idea of the paper is to estimate dependency between glioma tissue and blood serum biomarkers using Raman spectroscopy.
Denis Vrazhnov, Anna Mankova, Evgeny Stupak, Yury Kistenev, Alexander Shkurinov, Olga Cherkasova   +5 more
doaj   +1 more source

Molecular polarizability anisotropy of liquid water revealed by terahertz-induced transient orientation

Nature Communications, 2018
The intermolecular dynamics of liquid water impact most biological processes. Here, the authors use intense terahertz electromagnetic pulses to generate a transient, out-of-equilibrium state of the water network to show that the molecules become oriented
Peter Zalden, Liwei Song, Xiaojun Wu, Haoyu Huang, Frederike Ahr, Oliver D. Mücke, Joscha Reichert, Michael Thorwart, Pankaj Kr. Mishra, Ralph Welsch, Robin Santra, Franz X. Kärtner, Christian Bressler   +12 more
doaj   +1 more source

A 3D Laser Profiling System for Rail Surface Defect Detection

Sensors, 2017
Rail surface defects such as the abrasion, scratch and peeling often cause damages to the train wheels and rail bearings. An efficient and accurate detection of rail defects is of vital importance for the safety of railway transportation. In the past few
Zhimin Xiong, Qingquan Li, Qingzhou Mao, Qin Zou   +3 more
doaj   +1 more source

Apparatus to control and visualize the impact of a high-energy laser pulse on a liquid target [PDF]

, 2017
We present an experimental apparatus to control and visualize the response of a liquid target to a laser-induced vaporization. We use a millimeter-sized drop as target and present two liquid-dye solutions that allow a variation of the absorption ...
Alexander L. Klein, de Gennes P.-G., Detlef Lohse, Eason R., Hanneke Gelderblom, Hecht E., Michel Versluis, Settles G. S., Weichel H.   +8 more
core   +3 more sources