Results 31 to 40 of about 50,078 (268)

Microorganism adhesion using silicon dioxide: An experimental study

Heliyon, 2020
In this study, spectrophotometry was used to measure changes in the absorbance properties of yeast, Gram-positive, and Gram-negative bacteria after their attachment to silicon dioxide microparticles (silica).
Roberts Lozins, Tūrs Selga, Dzintars Ozoliņš   +2 more
doaj   +1 more source

Optical Dynamics at the Au/ZnPc Interfaces [PDF]

Materials Research, 2020
In this work, the optical dynamics and the structural properties of the zinc phthalocyanine which are coated onto 150 nm thick Au substrates are studied by the X-ray diffraction and optical spectrophotometry techniques.
A. F. Qasrawi, Hadeel M. Zyoud
doaj   +2 more sources

Silicon photonics for on-chip spectrophotometry [PDF]

, 2015
Silicon and Silicon Nitride photonics arc on their way to open the route towards integrated on-chip spectropholometers, Cost, miniaturization, miniaturization, hut also performance advantages ace at the origin of their potential We will discuss several ...
Baets, Roel, Bienstman, Peter, Bogaerts, Wim, Cardile, Paolo, Delbeke, Danaë, Dhakal, Ashim, Hoste, Jan-Willem, Le Thomas, Nicolas, Martens, Daan, Roelkens, Günther, Ruocco, Alfonso, Subramanian, Ananth, Woestenborghs, Wouter   +12 more
core   +2 more sources

Mimicking Synaptic Plasticity: Optoionic MoS2 Memory Powered by Biopolymer Hydrogels as a Dynamic Cations Reservoir

Advanced Functional Materials, EarlyView.
Janus (MoS2) transistors functionalized with sodium alginate (SA) and poly(vinylidene fluoride‐co‐trifluoroethylene) [P(VDF‐TrFE)] exhibit persistent photo‐induced ionic gating, driven by dynamic cation migration at the hybrid interface. This ionic mechanism enables finely tunable photoconductivity and emulates key synaptic plasticity behaviors ...
Yeonsu Jeong, Pietro Tordi, Adrián Tamayo, Bin Han, Massimo Bonini, Paolo Samorì   +5 more
wiley   +1 more source

Tests of stellar model atmospheres by optical interferometry: VLTI/VINCI limb-darkening measurements of the M4 giant psi phe

, 2003
We present K-band interferometric measurements of the limb-darkened intensity profile of the M4 giant star psi Phoenicis obtained with VLTI/VINCI. High-precision squared visibility amplitudes in the second lobe of the visibility function were obtained ...
Aufdenberg, Aufdenberg, Ballester, Baschek, Batten, Bessell, Bessell, Bessell, Bordé, Burnashev, Burns, Cardelli, Claret, Claret, Cohen, Coudé du Foresto, Coudé du Foresto, Coudé du Foresto, Crampton, Davis, di Benedetto, Dyck, Eggen, Evans, Farge, Feast, Girardi, Glindemann, Hajian, Hanbury Brown, Haniff, Hauschildt, Hauschildt, Hofmann, J. P. Aufdenberg, Jankov, Johnson, Johnson, Johnson, Jones, Jones, Kervella, Kurucz, Leinert, Lunt, M. Wittkowski, Moro, P. Kervella, Percheron, Perrin, Petrov, Plez, Quirrenbach, Richichi, Schlegel, Scholz, Scholz, Scholz, Scholz, Ségransan, Tango, Wittkowski, Wittkowski   +62 more
core   +2 more sources

Thermoplasmonic Nanorings for Passive Solar‐Responsive Smart Windows in Energy‐Efficient Building Applications

Advanced Functional Materials, EarlyView.
This work presents scalable silver nanorings with tunable thermoplasmonic properties for smart window applications. By responding to sunlight and environmental changes, the nanorings modulate near‐infrared light and reduce heat transmission. Their unique geometry enables dynamic optical control, offering a promising route toward energy‐efficient ...
Xavier Baami González, Duncan S. Sutherland   +1 more
wiley   +1 more source

STUDIES ON CHITOSAN - BENZALDEHYDE INTERACTION IN A HOMOGENEOUS SYSTEM AND ITS ADSORPTION BEHAVIOR OF METAL IONS IN AQUEOUS SOLUTION

ASEAN Journal on Science and Technology for Development, 2017
In this work, N-benzylidene chitosan was synthesized by chitosan –benzaldehyde interaction in a homogeneous system. The modified polymers were characterized by means of infrared (IR) spectra, X-Ray diffraction and thermal analysis.
Do Truong Thien, Nguyen Van Tuyen, Tran Thi Y Nhi   +2 more
doaj   +1 more source

A Fluorescent and Colorimetric Chemosensor for Hg2+ Based on Rhodamine 6G With a Two-Step Reaction Mechanism

Frontiers in Chemistry, 2020
A fluorescent and colorimetric chemosensor L based on rhodamine 6G was designed, synthesized, and characterized. Based on a two-step reaction, the chemosensor L effectively recognized Hg2+.
Cui-Bing Bai, Cui-Bing Bai, Wei-Gang Wang, Jie Zhang, Chang Wang, Chang Wang, Rui Qiao, Rui Qiao, Biao Wei, Biao Wei, Lin Zhang, Lin Zhang, Shui-Sheng Chen, Shui-Sheng Chen, Song Yang, Song Yang   +15 more
doaj   +1 more source

Discovery of 21 New Changing-look AGNs in Northern Sky

, 2018
The rare case of changing-look (CL) AGNs, with the appearance or disappearance of broad Balmer emission lines within a few years, challenges our understanding of the AGN unified model.
Fan, Xiaohui, Feng, Xiaotong, Fu, Yuming, Green, Richard, Jiang, Linhua, Joshi, Ravi, Liu, Yuanqi, McGreer, Ian, Shangguan, Jinyi, Wang, Bingquan, Wang, Feige, Wu, Xue-Bing, Yang, Jinyi, Yang, Qian, Yao, Su   +14 more
core   +1 more source

Co‐Delivery of Ca‐MOF and Mg‐MOF Using Nanoengineered Hydrogels to Promote In Situ Mineralization and Bone Defect Repair: In Vitro and In Vivo Analysis

Advanced Healthcare Materials, EarlyView.
Metal‐organic frameworks (MOFs) have been synthesized using calcium (Ca‐MOF), magnesium (Mg‐MOF), and as hybrids (Ca/Mg‐MOF) for bone healing applications. MOFs are integrated into hydrogel polymer networks for injectable, sprayable, and coating applications.
Cho‐E Choi, Chao Liang, Yasmeen Shamiya, Sang Jin Lee, Arghya Paul   +4 more
wiley   +1 more source