Results 71 to 80 of about 357,235 (264)

DNA‐Templated 2D Heterostructures as Phototriggered Dynamic Nanohybrids: From Releasing Molecular Loads to Controlling Enzyme Biocatalytic Function

Advanced Functional Materials, EarlyView.
DNA strands are employed both as dynamic linkers and nanoscale templates for the integration of Ag2S nanoparticles on MoS2, which in turn imparted photothermal responsiveness; this feature permits the selective cargo (fluorophore, quantum dots or an enzyme) release from the MoS2 surface in response to local heat induced by light irradiation.
Kai Chen, Haosen Miao, Weiying Hong, Matteo Palma   +3 more
wiley   +1 more source

The research of 369.5 nm laser stabilizing method and its influence on ytterbium ion optical clock

AIP Advances
The 369.5 nm laser serves as the cooling laser for ytterbium-ion optical clocks, and its frequency instability directly affects the intensity of ion fluorescence. This paper compares two stabilization methods for a 369.5 nm frequency-tripled fiber laser:
Shaoyang Dai, Chaowei Wang, Shiying Cao, Yani Zuo, Kun Liu, Weiliang Chen, Fasong Zheng, Wenbo Zhao, Fang Fang   +8 more
doaj   +1 more source

Multimodal detection and laser-induced damage correlation of real surface defects on fused silica optics

High Power Laser Science and Engineering
Surface defects on fused silica optics significantly limit their laser-induced damage resistance under ultraviolet pulsed laser irradiation, yet quantitative correlations between defect parameters and damage thresholds remain scarce.
Yubo Liu, Shiling Wang, Fengwei Zhang, Zedong Wang, Xiyuan Li, Lan Wu, Chong Liu, Dong Liu   +7 more
doaj   +1 more source

Study of laser fluorescence spectroscopy in livers of rats with hypothermic ischemia. [PDF]

Acta Cir Bras, 2023
Tsuge AT, Pereira JJ, Vollet-Filho JD, Kubrusly MS, Galvão FHF, Ribeiro ON, Moreno CR, Ikegami RN, Chaib E, Castro E Silva O.   +9 more
europepmc   +1 more source

Strain‐Programmable Luminescent Adhesive Patch With Tartrazine‐Mediated Optical Skin Clearing for Photochemical Tissue Bonding

Advanced Functional Materials, EarlyView.
We propose a suture‐complementary approach that integrates optical skin clearing with a strain‐programmable luminescent adhesive patch. Hyaluronic acid promotes transdermal delivery of tartrazine to improve optical clearing and stabilizes its interaction with a photosensitizer. Optical clearing increases the penetration depth of visible light into skin,
Seong‐Jong Kim, Kyungjoo Jo, Kwanghyeon Park, Jun Hee Kim, Jong Hyeong Cho, Inhoo Choi, Sei Kwang Hahn   +6 more
wiley   +1 more source

An in-vitro comparison of visual inspection, bite-wing radiography, and laser fluorescence methods for the diagnosis of occlusal caries

Journal of Indian Society of Pedodontics and Preventive Dentistry, 2009
Purpose: The purpose of this study was to compare accuracy and reproducibility of visual inspection (VI), bitewing (BW) radiography, and laser fluorescence (LF, DIANOdent) methods in the diagnosis of occlusal caries.
Pourhashemi S, Jafari A, Motahhari P, Panjnoosh M, Kharrazi Fard M, Sanati I, Sahadfar M, Pariab M   +7 more
doaj  

Detection of fluorescent nanoparticles in flame with femtosecond laser-induced fluorescence anisotropy

Optics Express, 2008
The mean size of fluorescent nanoparticles produced in a propane flame has been measured with an in-situ technique employing a femtosecond laser to excite the sample and a streak camera for time-resolved detection of the fluorescence. The time profile of the fluorescence anisotropy showed a Gaussian behaviour, typical of free rotor reorientation.
A. Bruno, F. Ossler, DE LISIO, CORRADO, P. Minutolo, SPINELLI, NICOLA, D'ALESSIO, ANTONIO   +5 more
openaire   +8 more sources

Microenvironmental Reprogramming by 3D Anisotropic Cardiac Extracellular Matrix Induces Nuclear Remodeling and Epigenetic Maturation of Chemically Induced Cardiomyocytes

Advanced Functional Materials, EarlyView.
A 3D anisotropic hydrogel derived from heart extracellular matrix guides cytoskeletal alignment and nuclear remodeling in reprogrammed cardiomyocyte‐like cells. This study reveals how matrix alignment modulates nuclear envelope dynamics and chromatin state, triggering transcriptional and functional maturation.
Seung Ju Seo, Mi Jeong Lee, Hyun Wook Kang, Seonhee Byeon, Soo‐Kyoung Choi, Nakwon Choi, Seung‐Woo Cho, Yoonhee Jin   +7 more
wiley   +1 more source

Raman Spectroscopy of Iranian Region Calcite Using Pulsed Laser: An Approach of Fluorescence Suppression by Time-Gating Method

Journal of Spectroscopy, 2013
The effect of time-gating method in Raman spectroscopy for fluorescence suppression of Iranian region calcite is investigated. Experiments are done using an Nd:YAG laser with a pulse durations of 10 ns at wavelength 532 nm.
H. Soleimaninejad, F. Matroodi, S. H. Tavassoli   +2 more
doaj   +1 more source

A Smartphone-Based Low-Cost Inverted Laser Fluorescence Microscope for Disease Diagnosis. [PDF]

Biosensors (Basel), 2022
Ormachea O, Villazón A, Rodriguez P, Zimic M.   +3 more
europepmc   +1 more source