TechConnect Proceedings Papers
Month: June 2010
Synthesis of highly-doped silicon and germanium nanoparticles in a low-pressure plasma-reactor for thermoelectric and solar applications
Microwave-plasma induced thermal decomposition of gaseous precursors like germane (GeH4) and silane (SiH4) is used to synthesize semiconductor nanoparticles for thermoelectric and thermal applications. P and n-doping can be achieved by mixing silane and germane [...]
Ultrasonically sprayed nanostructured SnO2 thin films for highly sensitive hydrogen sensing
Nanostructured SnO2 thin films were prepared by ultrasonic spray pyrolysis technique. The aerosol produced by nozzle was sprayed on glass substrate heated at 150oC. The sensing performance of the films was tested for various gases [...]
Electron instabilities in nanoclusters, nanostructures and inhomogeneous nanomaterials: bottom up approach
Inhomogeneous nanomaterials with strong local electron correlations are creating a new world-view in condensed matter physics [1-4]. These materials with intrinsic ihomogeneities have electronic and magnetic properties that are widely different from the conventional materials. [...]
Au nanoparticles functionnalized by J-aggregates for highly efficient strong coupling applications
Djoumessi Lekeufack D., Brioude A., Bellessa J., De Zeng L., Coleman A.W., Miele P., Université Claude Bernard-Lyon 1, FR
The coupling of organic molecules and metallic nanostructures brings new opportunities to develop highly efficient photonic devices that combine the best features of those two specific materials. Indeed, the interactions between the electronic transitions of [...]
Surface Enhanced Raman Utilizing Magentic Core Silver Shell Nanoparticles
SERS is an extremely sensitive technique exploited in laboratory investigations to provide single molecule detection. In sensor applications, this sensitivity has not been fully realized in part due to the low scattering efficiency. We hypothesize [...]
Nano Silver – Why It is so Hot Now?
Lem K.W., Haw J.R., Lee D.S., Brumlik C., Sund S., Curran S., Smith P., Brauer S., Schmidt D., Konkuk University, KR
It has been known for centuries that silver has an antiseptic effect. In ancient times, many Greeks used silver vessels for drinking water storage. Koreans have also chosen silver to make their metal chopsticks. Recently, [...]
Durability of Pt/MWCNT Nanocatalyst in High Temperature H3PO4/PBI PEMFC
Buazarand F., Khaledib H., Almoora K., Lia Q., Steenbergc T., Jensen J.O., Bjerruma N.J., technical university of denmark(DTU), DK
The newest development in the field of proton exchange membrane fuel cells (PEMFC) aims at higher operational temperatures above 100˚C [ ] which have been the main research focus at the Energy and Materials Science [...]
New ripening mechanism for silver and gold nanorods in aqueous solution
In the last years an increasing number of publications addressed the relationship between particle shape and the electro-optical product properties. Especially anisotropic metal particles e.g. gold or silver were found to be promising candidates as [...]
Precipitant molar concentration effect on the upconversion emission in BaZrO3:Er,Yb nanocrystalline phosphor
Diaz-Torres L.A., Salas P., Castaño V.M., Oliva J., Angeles-Chavez C., Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, MX
Strong Blue, green, and red upconversion emission of Er3+ in sub-microcrystalline BaZrO3:(Yb3+Er3+) is observed. Powder samples were obtained by a facile hydrothermal process at 100ºC with different water to ethanol solvent ratios. The as synthesized [...]