Results 251 to 260 of about 55,378 (308)

Nonlinear effects in single-particle photothermal imaging

The Journal of Chemical Physics, 2023
Although photothermal imaging was originally designed to detect individual molecules that do not emit or small nanoparticles that do not scatter, the technique is now being applied to image and spectroscopically characterize larger and more sophisticated nanoparticle structures that scatter light strongly.
Claire A. West, Stephen A. Lee, Jesse Shooter, Emily K. Searles, Harrison J. Goldwyn, Katherine A. Willets, Stephan Link, David J. Masiello   +7 more
openaire   +2 more sources

Micromanipulator by photothermal effect

SPIE Proceedings, 2003
An optical actuator has some interesting characteristics, such as no generation of magnetic noise and receiving the energy remotely. A novel micromanipulator using photothermal effect is proposed. It consists of three optical fibers. One end of the fiber is cut for a bevel and painted with black color.
Yukitoshi Otani, Yasuto Matsuba, Shigeya Chimura, Norihiro Umeda, Toru Yoshizawa   +4 more
openaire   +1 more source

Photothermal Transfection for Effective Nonviral Genome Editing

ACS Applied Bio Materials, 2021
The efficient nonviral delivery of nucleic acids into the cytoplasm is needed to fully realize the potential of gene therapy. Although cationic lipids and nanoparticles have been widely used to improve the intracellular delivery of nucleic acids, they suffer from cytotoxicity and poor endosomal escape, thus limiting the transfection efficacy.
Nuri Oh, Sooyeon Park, Jin Woo Kim, Ji-Ho Park   +3 more
openaire   +2 more sources

Nanosecond Photothermal Effects in Plasmonic Nanostructures

ACS Nano, 2012
Photothermal effects in plasmonic nanostructures have great potentials in applications for photothermal cancer therapy, optical storage, thermo-photovoltaics, etc. However, the transient temperature behavior of a nanoscale material system during an ultrafast photothermal process has rarely been accurately investigated.
Xi, Chen, Yiting, Chen, Min, Yan, Min, Qiu   +3 more
openaire   +2 more sources

Photothermal effects of laser tissue soldering

Physics in Medicine and Biology, 1999
Low-strength anastomoses and thermal damage of tissue are major concerns in laser tissue welding techniques where laser energy is used to induce thermal changes in the molecular structure of the tissues being joined, hence allowing them to bond together.
K M, McNally, B S, Sorg, A J, Welch, J M, Dawes, E R, Owen   +4 more
openaire   +2 more sources

Detector effects in photothermal deflection experiments

Applied Optics, 2008
We report on the theoretical analysis of a detector type influence on the normal deflection signal in photothermal experiments. Two cases are examined. In the first, the quadrant photodiode was considered as the detector; in the second the signal from the position detector, which measures the central moment displacement of the probe beam, was analyzed.
Dorota Korte, Kobylińska, Roman J, Bukowski, Jerzy, Bodzenia, Stanisław, Kochowski, Anna, Kazmiercźak-Balata   +4 more
openaire   +2 more sources

Photothermal effects in mobile nanotweezers

2018 4th IEEE International Conference on Emerging Electronics (ICEE), 2018
Magnetically driven mobile plasmonic nanotweezers [1] are potential candidates for various device applications pertaining to optical manipulation which are otherwise difficult to achieve using existing techniques. When illuminated, plasmonic nanoantennas generate enhanced localized electric field which imparts mechanical gradient force to trap sub ...
Souvik Ghosh, Ambarish Ghosh
openaire   +1 more source

Photothermal effect of Au nanoparticles and photothermal inactivation to saccharomycetes cell

Optik, 2020
Abstract Au nanoparticles (Au NPs) absorb light energy and convert it to thermal energy that transfers to environment. The temperature variation of Au NP and environment as well as photothermal conversion efficiency of Au NP are problems concerned by researchers.
Renxi Gao, Rongpeng Fu, Weiyan Jiao, Guanghua Fan, Chunyan Liang, Jinjing Chen, Huaibo Ren, Yingying Wang, Wenjun Liu, Shoutian Ren, Quanli Dong, Qifeng Wei, Xiulian Ren, Mingjian Sun, Weixin Liu   +14 more
openaire   +1 more source

Pyrometry using a photothermal effect

Annual Meeting Optical Society of America, 1986
Pyrometry is a widely used nonintrusive technique to measure surface temperature. The signal received by the detector results from both intrinsic emission and ambient radiation reflected from the sample. The first problem is to measure quantitatively the emission only. This being achieved, the problem of the generally unknown emissivity remains.
O. Berthet, J. J. Greffet
openaire   +1 more source

Microbubble actuator using photothermal effect

SPIE Proceedings, 2002
Recently, micro-actuators are attracted attention of advance technology. An optical actuator features characteristics such as energy supplied remotely in wireless and no generation of magnetic noise. In this report, a new type of a micro bubble actuator using photo-thermal effect is proposed The micro bubble by photothermal effect has advantage that to
Yukitoshi Otani, Yasuto Matsuba, Akimasa Osaka   +2 more
openaire   +1 more source