Explore PREM News and Highlights
Highlight · Jun 15, 2013
Novel Family of Chiral-Based Topological Insulators: Elemental Tellurium under Strain
First-principles prediction that elemental Tellurium undergoes a trivial insulator to strong topological insulator (metal) transition under shear (hydrostatic or uniaxial) strain.
Highlight · Jun 14, 2013
Prediction of Carrier Mobility in Disordered Semiconductors for Organic Photovoltaics
The first-principles calculation is based on the phonon-assisted charge transfer model. The ionic vibration brings the two electronic states closer whereby the charge carriers hop from one state to another with a transition rate. The charge transport mechanism is phonon-assisted charge t
Highlight · May 31, 2013
Isomeric Separation of Endohedral Fullerene Compounds by Selective Chemical Oxidation
Fullerenes are carbon cages that are currently being used in solar cells because of their unique properties as electron acceptors.
Highlight · May 20, 2013
PREM’s Nano Exhibición
The PREM Nano Exhibición is presented in collaboration with Humacao’s Casa Roig Museum from March to December 2013. The basic exhibit was awarded to PREM by NISENet. Additional modules on “Nano, Stained Glasses and Materials in Historical Casa Roig” are being developed with the participat
Highlight · May 20, 2013
Doping graphene with UV light
CVD Graphene was synthesized at PENN.
A Field Effect Transistor was fabricated at UPRH .
No lithography was used (i.e. no harsh chemicals used) to define the source and drain electrodes, instead a TEM grid was used as a shadow mask. This is new to graphene based device fabrication.
The dev
Highlight · May 20, 2013
Band Gap Opening in Methane Intercalated Graphene
Recent experimental work has demonstrated production of quasi free-standing graphene by methane intercalation. The intercalation weakens the coupling of adjacent graphene layers and yields Dirac fermion behaviour of monolayer graphene.
Highlight · May 20, 2013
High Altitude Research Platform
The 2012 Pre-Freshmen Bridge Summer Science Program students conducted an interdisciplinary high altitude balloon research project. The research project involved eight teams of students working on original research projects.Two teams worked on materials science research, two teams on susta
Highlight · May 20, 2013
Tunable Band Gap in Gold Intercalated Graphene
Recent experimental work has demonstrated production of quasi free-standing graphene by gold intercalation. The intercalation weakens the coupling of adjacent graphene layers and yields Dirac fermion behavior of monolayer graphene.
Highlight · May 8, 2013
Multifunctional Nanoparticles Can Target, Separate and Destroy Bacteria
JSU & UT San Antonio team members have reported the development of multifunctional popcorn shape iron magnetic core- gold plasmonic shell nanotechnology-driven approach for targeted magnetic separation & enrichment, label-free surface enhanced Raman spectroscopy detection, and sel
Highlight · May 8, 2013
Functionalization of Metallic Nanoparticles with Methyl-Thiol Molecules
Functionalization of Au and Ag nanoparticles with thiol molecules has been a topic of high interest, due to their peculiar and unique properties of their organic-metal interfaces. Thiols are well-known ligand molecules because they are able to form a self-assembled monolayer on the metal n
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