Results 31 to 40 of about 1,105,025 (337)
Green Synthesis of Highly Luminescent Carbon Quantum Dots from Lemon Juice
Journal of Nanotechnology, 2019 Highly luminescent carbon dots (C-dots) were synthesized by the one-pot simple hydrothermal method directly from lemon juice using different temperatures, time, aging of precursors, and diluted solvents to control the luminescence of C‐dots. The obtained
Bui Thi Hoan +2 more
doaj +1 more source
Nanomaterials, 2021 Zinc oxide nanoparticles (ZnO NPs) are applied in various applications in catalysis, biosensing, imaging, and as antibacterial agents. Here we prepared ZnO nanomaterials decorated by γ-aminobutyric acid (GABA), curcumin derivatives (CurBF2) and silver ...
Chanon Talodthaisong +7 more
doaj +1 more source
Journal of Biomedical Optics, 2011 The aim is to study cerebral vascular functional connectivity during motor tasks and resting state using multichannel frequency-domain near-infrared spectrophotometry.
U. Wolf +6 more
semanticscholar +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
Techniques and Review of Absolute Flux Calibration from the Ultraviolet to the Mid-Infrared [PDF]
, 2014 The measurement of precise absolute fluxes for stellar sources has been pursued with increased vigor since the discovery of the dark energy and the realization that its detailed understanding requires accurate spectral energy distributions (SEDs) of redshifted Ia supernovae in the rest frame.
arxiv +1 more source
The Disk Atmospheres of Three Herbig Ae/Be Stars [PDF]
Astrophys.J. 622 (2005) 430-439, 2004 We present infrared (IR) spectrophotometry ($R \simeq 180$) of three Herbig Ae/Be stars surrounded by possible protoplanetary disks: HD 150193, HD100546 and HD 179218. We construct a mid-IR spectral energy distributions (SED) for each object by using $7.6 - 13.2$ \micron HIFOGS spectra, 2.4 -- 45 \micron\ spectrophotometry from the {\it ISO} SWS, the ...
arxiv +1 more source
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 +15 more
doaj +1 more source
New bright optical spectrophotometric standards: A-type stars from the STIS Next Generation Spectral Library [PDF]
, 2015 Exoplanets have sparked interest in extremely high signal-to-noise ratio spectroscopic observations of very bright stars, in a regime where flux calibrators, in particular DA white dwarfs, are not available. We argue that A-type stars offer a useful alternative and reliable space-based spectrophotometry is now available for a number of bright ones in ...
arxiv +1 more source
Exploring Optical and Electrical Gas Detection Based on Zinc-Tetraphenylporphyrin Sensitizer [PDF]
arXiv, 2021 We developed optical waveguide (OWG), ultraviolet-visible spectrophotometry (UV-vis), and electrically operated gas sensors by utilizing zinc-tetraphenylporphyrin (ZnTPP) as sensitizer. Strikingly, ZnTPP thin-film/K+-exchanged glass optical waveguide (OWG) sensing element exhibits a superior signal-to-noise ratio (SNR) of 109.6 upon 1 ppm NO2 gas ...
arxiv
Sono‐Piezo‐Photosynthesis of Ethylene and Acetylene from Bioethanol under Ambient Conditions
Advanced Functional Materials, EarlyView.A novel sono‐piezo‐photocatalytic strategy enables the conversion of bioethanol to ethylene (C2H4) and acetylene (C2H2) under ambient conditions, addressing the limitations of conventional methods that are high‐temperature and energy‐intensive. By using an advanced graphene oxide/sodium bismuth titanate heterostructure catalyst, this work achieved ...
Yue Jiang +21 more
wiley +1 more source