Nanodays 2013 – Mayagüez Mall

Every year since 2008, NSF has carried out a nationwide festival of educational programs focusing on nanoscale science known as “NanoDays”, and 2013 was no exception. The event took place on April 14th, 2013 at the Mayagüez Mall in Mayagüez, Puerto Rico, where the local community, especially K-12 students, witnessed several activities and experiments/demonstrations on…

Teaching teachers basic principles in colloidal physics

This past Saturday, November 10th, 2012, Prof. Córdova-Figueroa, Christian Santoni, Efrain Aymat and Nakaira Ramirez held a workshop to local teachers on Brownian Motion and Diffusion at the Science on Wheels Education Center at the University of Puerto Rico, Mayagüez.  After a 30 min talk on the history and physics of random motion, teachers constructed…

Workshop to local teachers

On May 26th, 2012, Dr. Córdova-Figueroa and his research group participated in a workshop for local math and science teachers also coordinated in collaboration with SONW and NSF Wisconsin-Puerto Rico PREM. The event took place in Hotel Villa Antonio, Rincón, PR and it was the third time offered in the last few years. Its main…

NanoDays in Mayagüez Mall

NSF-sponsored outreach activity “Nanodays” was carried out on April 14th, 2012 in Mayagüez Mall at Mayagüez, Puerto Rico. The main objective of this event was to show to the local community, especially K-12 students, some important features of nanotechnology. Several research groups from the University of Puerto Rico at Mayagüez of different backgrounds presented simple and…

Workshop: Viscous Flows & Brownian Motion

Last Saturday, we participated in a workshop for local science and math teachers sponsored by Science on Wheels and NSF. Our goal was to explain in very simple terms the physics of viscous flows and Brownian motion. Teachers will then use this information to prepare classes on these subjects. Attached is a video of the…

Self Propulsion and Collective Behavior in Microorganisms

Microorganisms like bacteria, are one of the simplest systems in the living world. It is because of this that many studies have focused on the importance of colony formation, orientation, self-propulsion and collective behavior. Many researchers have been motivated by these natural systems to model the behaviors in artificially manufactured self- propelled catalytic particles using…

Brownian Dynamics Simulations (BDS)

Brownian dynamics simulations also known as BDS, is a computer-based simulation technique were a pre-design system is allowed to respond to any given configuration (in this case to an applied external forces/torque) to study the interaction inside the system. These interactions allowed the system to respond instantaneously to the given configuration, which causes the system…

Dynamic Light Scattering(DLS) diffusivity calculations

Dynamic light scattering, also known as quasi elastic light scattering (Quels) and photon correlation spectroscopy (PCS), measures the laser light that is scattered from dissolved macromolecules or suspended particles. Due to the Brownian motion of the molecules and particles in solution fluctuations of the scattering intensity can be observed. According to the semiclassical light scattering…