Rambabu U.,MET Tech |
Han S.-D.,Korea Institute of Energy Research
Materials Research Bulletin | Year: 2013
An attempt was made to enhance the luminescence properties of LnVO 4:Eu3+@ SiO2 (Ln = Gd, Y and Gd/Y) powder phosphors. Pure phase with tetragonal structure of the produced phosphors was confirmed by XRD profiles. Sub-micron sized phosphors have shown 35% more PL intensity than the bulk, which was further improved 20.22% with SiO2 shell coating. SiO2 shell coating was optimized by SEM-EDAX, FT-IR, PL and TEM measurements. Emission intensities of the transition, 5D0 → 7F2 have dominated 5D0 → 7F1, which indicated the lowering of an inverse symmetry in the vicinity of Eu3+ ions. Luminescence intensity and color purity were enhanced with the host modification by substituting Gd3+ with Y3+ sites, followed by SiO 2 coating. Based on the systematic investigations carried out, the phosphor Y0.95VO4:Eu3+ 0.05@ SiO 2 is suggested to be a novel contender for its suitable red emission in certain displays or lighting. © 2012 Elsevier Ltd. Source
MET Tech and The Secretary | Date: 2013-12-12
The present disclosure is in the field of electrical circuits and particularly to circuits characterized by plural conductive paths supported on a non-conductive substrate. The disclosure relates to ceramic filler compositions and methods for preparing said compositions. Further, the present disclosure discloses fluoropolymer-ceramic filler compositions and their laminates along with their respective methods for preparing the same. Said fluoropolymer-ceramic filler compositions provide for excellent properties for dielectric constant, loss tangent and temperature coefficient of dielectric constant. In addition, electrical substrate materials comprising of a conductive outer layer supported on a thin sheet of insulating material is also disclosed.
MET Tech | Date: 2010-08-06
This invention provides a new category of inertial sensors (linear and angular accelerometers, gyroscopes, inclinometers and seismometers) called Molecular Electronic Transducers (MET). Unlike other inertial sensors, MET sensors use a liquid electrolyte as their inertial mass. The sensors do not contain any precision mechanical parts or springs, and are relatively simple and inexpensive to manufacture.
Secretary and MET Tech | Date: 2013-12-16
MET Tech and Secretary | Date: 2013-12-17
The present disclosure relates to a process for synthesis of barium bismuth sulfide nanofibers, having equivalent shielding capacity as lead. The present disclosure also relates to a radiation shielding articles and cosmeceuticals.