MVC 2009 Winners Gallery - Penn State Materials Science
Flavio Griggio - Best in Show
Graduate Student, Materials Science and Engineering
The Pennsylvania State University.
Our goal is to improve the resolution and portability of the current ultrasound imaging technology. Small resonant structures (30 microns in width like the ones depicted) enable frequency of operation higher than 60 MHz and are a perfect candidate for the next generation of medical imaging instruments.
Barbara Garrison - 1st in Science
Shapiro Professor of Chemistry, Department of Chemistry
The Pennsylvania State University.
Picture of surface topography as determined from computer simulation of a silver surface repetitively bombarded with small gold triatomic molecules. Secondary ion mass spectrometry (SIMS) is used to probe the depth composition of molecular solids. The computer simulations provide a microscopic view of the events.
Ryan White - 2nd Place Science
Graduate Student, Materials Science and Engineering
The Pennsylvania State University.
Transmission electron micrograph of a LaB6-ZrB2 directionally solidified eutectic sample which has been deformed with a Vickers indentation. The debonding of the ZrB2 fibers from the LaB6 matrix leads to fracture toughness higher than either constituent phase. This is useful in aerospace and other high temperature applications.
Sarah Eichfeld - 3rd Science
Graduate Student, Materials Science and Engineering
The Pennsylvania State University
Nano –forest: Arrays of silicon nanowires are grown using an Au catalyst and are of interest for solar applications. During growth the Au can run down the surface of the nanowire and grow small silicon “limbs” along the main nanowire, leading to a nanowire forest.
Stephen Poterala - 1st Visual
Graduate Student, Materials Science and Engineering
The Pennsylvania State University.
These intergrown plates were formed during an attempt to synthesize disc-shaped platelets of lead titanate. The platelets can be used to create textured ceramics for transducers in sonar and medical equipment. Although this particular attempt failed, the resulting bookcase-like structures are made of a previously unknown lead bismuth titanate compound.
Jane Howell - 2nd Place Visual
Graduate Student, Materials Science and Engineering
The Pennsylvania State University.
A thin film composed of 50% nickel and 50% aluminum (NiAl) after being exposed to a strong acid (HF) for 10 minutes. NiAl is being studied for microelectromechanical systems (MEMS) like thermal actuators and resonators. The spiral cracking results due to high stresses in the material.
Heayoung Yoon, Yuwen Yu - 3rd Visual
Post Doc, Electrical Engineering.
Graduate Student, Electrical Engineering
The Pennsylvania State University.
Scanning electron microscope (SEM) image of collapsed etched-silicon pillar array device. When the high-aspect-ratio pillars are fabricated upright, the radial junction array can serve as higher-efficiency and cost-effective solar cells than the traditional planar junction solar cells.
