Gold nanoparticle-based miniaturized NSET Probe for rapid and ultra-sensitive detection of mercury in soil, water and fish

Contamination of the environment with mercury has been an important concern throughout the world for decades. Human exposure to high Hg levels can harm the brain, heart, kidneys, lungs, and immune system of people of all ages.

PREM Participants from High School Published Paper in IEEE Sensor Journal

In this paper we have reported development and evaluation of a miniaturized, inexpensive and battery operated ultra-sensitive nanomaterial based fluorescence resonance energy transfer (NSET) probe shown in Figure 1.

UPRM PREM Highlighted in Major Hispanic Newspaper

The achievements of the University of Puerto Rico-Mayagüez PREM were highlighted in the January 25th, 2007 issue of El Nuevo Día (END). This is the largest Puerto Rican newspaper (est. circulation 250,000) and one of the largest Hispanic dailies in the US. The article titled "Fascinated by

UPRM PREM Professor Receives Presidential Award

UPRM PREM Prof. Carlos Rinaldi who in 2006 received the National Science Foundation's (NSF) Faculty Early Career Development Program (CAREER) award was one of the 20 NSF nominees who received the US government's highest honor for scientists and engineers beginning their independent careers

Materials Student Chapter Spotlighted in International Professional Publication

The Material Advantage Chapter of the University of Puerto Rico-Mayagüez (UPRM), founded under the auspice of UPRM PREM, received a spotlight on the October 2007 issue of JOM. This is published by The Minerals, Metals & Materials Society and is distributed globally. The 2-column spotli


In October – December 2007, PREM will bring Strange Matter to Casa Roig Museum Humacao, Puerto Rico. See more details at

Smart Materials for Manipulating Cell/Surface and Cell/Cell Interactions

Poly(N-isopropyl acrylamide) (pNIPAM) undergoes a sharp property change in response to a moderate temperature drop. When the polymer is maintained above its lower critical solution temperature (LCST, ~32 °C), most biological cells are observed to adhere. However, below its LCST, confluent

Anomalous Bias Dependence of Spin Torque in Magnetic Tunnel Junctions

When a spin polarized current passes through a magnetic multilayer structure, it can transfer spin angular momentum from one ferromagnet to another, and hence exert a torque on the magnetic moments of the electrodes. At sufficiently high current densities, this spin transfer torque can ev

Charge and Spin Transport and Symmetry Broken State in Graphene

We reproduce the recent experimentally discovered odd integer quantum Hall effect in graphene The bottom image reveals a stripe order and symmetry broken state in higher Dirac Landau levels Small projects involved in this research are used in a new course taught at CSUN by Dr. Sheng (

First Prizes in TMS 2007 Student Posters Competition

During its 2007 Annual Meeting held in Orlando, FL (Feb. 25 - March 2) The Minerals, Metals and Materials Society (TMS) hosted their Technical Division Student Posters Contest. The competition included five technical categories. Two PREM undergraduate students won first prizes their corres

Molecular Dynamics Simulations of DNA- Covered Carbon Nanotubes

Myrna Merced Serrano*, José O. Sotero Esteva, UPR-Humacao Robert Johnson**, A.T. Johnson, U. of. Pennsylvania * Undergraduate Student (sophomore) ** Graduate Student A FET device made with a single wall carbon nanotube (SWCNT) decorated with single-strand DNA (ss-DNA) has shown

Nanotubes for the Future

In February 2007, UPRM PREM hosted more than 140 students, members of the five Materials Science and Engineering clubs formed in public schools under the auspices of PREM. The activity was organized by PREM’s Office of Outreach and Education led by Prof. J. Santos and was partly financed b