منابع مشابه
ZrO2 Nanoparticles: Optical Properties of Tetragonal Phase and Enhanced Photocatalytic Activity
Tetragonal zirconia (t-ZrO2) nanoparticles were synthesized from thezirconium chloride using the co-precipitation technique and characterized by variousmeasurement techniques. FESEM analysis further revealed spherical shaped NPs andHR-TEM analysis determined the size of the particles in the range of 14.5 nm. The bandgap energy was estimated 4.0 eV. The UV (350 nm) emissi...
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We review recent work on DNA-linked gold nanoparticle assemblies. The synthesis, properties, and phase behavior of such DNA-gold nanoparticle assemblies are described. These nanoparticle assemblies have strong optical extinction in the ultraviolet and visible light regions; hence, the technique is used to study the kinetics and phase transitions of DNA-gold nanoparticle assemblies. The melting ...
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We have observed the magnetic-phase transitions of CeSb and CeBi by a magnetic circular dichroism spectroscopy in the infrared region. The phase boundary is similar to that detected by neutron scattering. The optical spectra re#ect the electronic structures in the ordered states. The electronic structure and also the origin of the magnetic transition are discussed. ( 2000 Elsevier Science B.V. ...
متن کاملActive Optical Metasurfaces Based on Defect-Engineered Phase-Transition Materials.
Active, widely tunable optical materials have enabled rapid advances in photonics and optoelectronics, especially in the emerging field of meta-devices. Here, we demonstrate that spatially selective defect engineering on the nanometer scale can transform phase-transition materials into optical metasurfaces. Using ion irradiation through nanometer-scale masks, we selectively defect-engineered th...
متن کاملOptical Sensor for Characterizing the Phase Transition in Salted Solutions
We propose a new optical sensor to characterize the solid-liquid phase transition in salted solutions. The probe mainly consists of a Raman spectrometer that extracts the vibrational properties from the light scattered by the salty medium. The spectrum of the O-H stretching band was shown to be strongly affected by the introduction of NaCl and the temperature change as well. A parameter SD defi...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section A Foundations of Crystallography
سال: 1987
ISSN: 0108-7673
DOI: 10.1107/s0108767387082448