Results 51 to 60 of about 5,781,485 (283)

Determination of temperature and residual laser energy on film fiber-optic thermal converter for diode laser surgery

Computer Assisted Surgery, 2017
Background: The diode laser was utilized in soft tissue incision of oral surgery based on the photothermic effect. The contradiction between the ablation efficiency and the thermal damage has always been in diode laser surgery, due to low absorption of ...
Weichao Liu, Yaqun Kong, Xiafei Shi, Xiaoxi Dong, Hong Wang, Jizhi Zhao, Yingxin Li   +6 more
doaj   +1 more source

Development and characterisation of laser power converters for optical power transfer applications

IET Optoelectronics, 2014
Interest in single‐junction photovoltaic devices has been renewed in recent years due to their potential to produce very high optical to electrical conversion efficiencies under monochromatic illumination. A single‐junction photovoltaic converter was developed for monochromatic radiation (a laser power converter (LPC)) to ...
Jarvis, SD, Mukherjee, J, Perren, M, Sweeney, SJ   +3 more
openaire   +3 more sources

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

Optimizing photoactivation of PA‐mCherry for optical pooled CRISPR screens

FEBS Open Bio, EarlyView.
Photoactivatable PA‐mCherry finds widespread use to optically tag individual cells. However, confocal 405 nm UV laser‐scanning (normal scan) is much less efficient than widefield UV illumination, limiting the use of PA‐mCherry on confocal instruments. We remedy this limitation by reporting that rapid and repeated confocal scanning with a low‐intensity,
Sravasti Mukherjee, Giulia Zanetti, Bram van den Broek, Kees Jalink   +3 more
wiley   +1 more source

Modelling approaches for DC-DC converters with switched capacitors

, 2015
In this paper we review relevant problems in the modelling of DC-DC converters with switched capacitors. We study several approaches that overcome the exposed modelling difficulties, addressing ideal and nonideal cases and using dynamic equations that ...
Rapisarda, P., Rosas Caro, J.C., Mayo Maldonado, J.C.   +2 more
core   +1 more source

65% Efficient Multijunction Photovoltaic Laser Power Converters Operating over 150 W/cm²

Photonics
Multijunction laser power converters are demonstrated for the first time with high efficiencies for average optical irradiances exceeding 150 W/cm2. The GaAs-based photovoltaic power converting III-V heterostructures are designed with six GaAs subcells ...
Simon Fafard, Denis Masson
doaj   +1 more source

Reactive SPS of Al2O3–RE:YAG (RE = Ce; Ce+Gd) composite ceramic phosphors

Journal of Advanced Ceramics, 2023
Ultrafine-grained Al2O3–rare earth:yttrium aluminium garnet (Al2O3–RE:YAG) (RE = Ce; Ce+Gd) composite ceramics were obtained for the first time by reactive spark plasma sintering (SPS) using commercially available initial oxide powders. The effect of key
Denis Yu. Kosyanov, Anastasia A. Vornovskikh, Oleg O. Shichalin, Evgeniy K. Papynov, Anton A. Belov, Aleksandra A. Kosianova, Aleksandr N. Fedorets, Andrei A. Leonov, Alexey P. Zavjalov, Sergey A. Tikhonov, Yanbin Wang, Ziqiu Cheng, Xin Liu, Jiang Li   +13 more
doaj   +1 more source

Evaluation of Photovoltaic Laser Power Converters for Non-Uniform Laser Irradiance Profiles

, 2022
The non-uniform irradiance of fiber lasers influences the performance of power-by-light systems. We analyze the non-uniformity in both single and triple junction power converters in addition to other parameters that could reduce the efficiency such as manufacturing tolerances or series resistance effect.
Marina Delgado, Iván García, Manuel Hinojosa, Carlos Algora   +3 more
openaire   +3 more sources

Refinement of amino‐acid conformation vs. difference density maps in time‐resolved serial femtosecond crystallography data analysis

FEBS Open Bio, EarlyView.
The dFoCC pipeline starts with observed DED and resting‐state coordinates, which are then used to generate a library of triggered states. Correlation analysis of the calculated DED features of each candidate vs observed DED permits quantitative evaluation of candidate structural quality.
Meng Iao Fong, Yuhei Hosokawa, Lars Oliver Essen, Manuel Maestre‐Reyna   +3 more
wiley   +1 more source

Microgrid power electronic converters: state of the art and future challenges

, 2009
This paper presents a review of the state of the art of power electric converters used in microgrids. The paper focuses primarily on grid connected converters.
Sharkh, S.M., Boltryk, R.J., Jamil, M., Hussain, B., Abu-Sara, M.   +4 more
core   +1 more source