# Presentation: 568358

## REU/RET/INT Macro Site: Structure Property Correlations across Micro to Nano Length Scales, DMR-0139081 & INT-0224929    {P.I.s: N.N. Thadhani, A. Gokhale, and C. Summers – Georgia Tech} 

-  Our macro site has involved participation of ***96**** REU students* (***31**** female,* ***27**** minority, ****67**** non-GT)* representing ***15**** majors* from ***41**** institutions* (1***6**** minority/UG colleges) *mentored by* ****33 ****faculty *from* ****8**** different schools *at Georgia Tech
* **It has also involved participation of 29 teachers from Atlanta area schools with 11 teachers from schools with >97% minority population*
* ****Ten**** ****REU**** students and ****five RET**** teachers have participated in International Research Experience at institutions in Southeast Asia. *

**REU student at an international research experience site at Tsinghua Univ., China **

**RET teacher at an international site at Mikkei High School in Tsukuba, Japan **

**Faculty mentor presenting certificate to REU student at end-of-program ceremony**

## Demographic and statistical information through 6-year history of REU site at Georgia Institute of Technology

**No. of participants listed for each year is more than that were initially included in our proposed budget (i.e., 12 per year for 1999-2001 and 15 per year for 2002-2004). ****Participation of additional students was facilitated by funds provided by faculty mentors from other grants.***

## REU/RET/INT Macro Site: Structure Property Correlations across Micro to Nano Length Scales, DMR-0139081 & INT-0224929

**REU student Clara Cho from Olin College, MA**, studied compositional spread of AlN thin films on 6H-SiC using combinatorial chemistry at Tokyo Institute of Technology

- AFM imaging showed islands of SiO2 oxide islands on film surface, possibly due to defects in deposition process. She also performed XRD rocking curve analysis which showed that AlN film was grown with  (0002) orientation.

**REU student Angela Camp, from Spelman College, Atlanta, GA**, studied synthesis of amphiphilic heterocycles consisting of hydrophobic polystyrene (PS) and polyoxyethylene (POE) at GaTech

- She maximized PS-POE cyclic product yield by self-assembly method in which ionic functional groups acted as templates to minimize side reactions. She used  1H-NMR, Gel Permeation Chromatography, and diffusion ordered NMR spectroscopy to confrim synthesis of PS-POE polymer and confirm  functionalization of PS and POE

**REU student Melanie Andara from Florida International Univ., ** studied hemocompatibility of DLC-composite films. She used SEM analysis to characterize events of blood activation on DLC films

- Her study demonstrated that the electrochemical interaction between Plasma Rich Platelet and surface of coatings produces clotting. DLC-Ti and DLC-Ag have higher charge transfer than pure DLC, DLC-CaO-SiO2 and DLC-GaN.

## REU/RET/INT Macro Site: Structure Property Correlations across Micro to Nano Length Scales, DMR-0139081 & INT-0224929

**REU student Jimmy Stokes from Univ of Minnesota, **studied electro-static absorbtion of Cytochrome c onto a solid ZrO2 substrate without denaturing the protein functionality, at NIMS, Tsukuba, Japan.

- UV-VIS spectra and fluorescence spectroscopy analysis verified that ion exchange occurs between the dipeptide and SRB. The results illustrate that ion exchange between peptide and Cytochrome c occurs more naturally with more negative peptide (ASP-GLU).

**RET teacher Steven Thedford from Redan High School, in Atlanta, GA**, developed a module on “Virtual Tensile Testing of Materials,” using Finite Element modeling

- His module involves generating load-displacement data obtained from FEM analysis to compute stress-strain values as in an actual experiment. It also involves producing true-stress versus true-strain plots and illustrating work hardening effects of different materials

**RET teacher Kevin Hursyz from Woodward Academy in Atlanta **developed a module to demonstrate heterogeneous solidification using single and two crystal seeds to innoculate solid phases in a solution of sodium acetate trihydrate

- His module includes extension of this demonstration to involve his students in designing new architec-tures and applications for production of “hot-packs” using sodium acetate trihydrate solution