James Stevenson (Cornell, Chemical Engineering PhD candidate) presented a talk at the Keck Institute for Space Sciences (KISS) at CalTech this summer based on work published in 2015 with his advisor, Paulette Clancy, and astronomer Jonathan Lunine in Science Advances. His work discussed the potential to form liposome-like analogs (azotosomes) in the methane-rich seas on Saturn’s moon, Titan. Based on his talk, he was invited to participate in the plenary session the following day for the Jet Propulsion Laboratory audience. These interactive KISS workshops “develop revolutionary concepts and technology for future space missions… as a ‘think and do tank.’ “
Cornell graduate students, Nikita Sengar and Blaire Sorenson, members of the Clancy group in Chemical Engineering, have been selected to receive two of the twelve travel grants available to attend the Macromolecular Simulation Software workshop in Jülich, Germany in October. The workshop is funded by NSF’s Advanced Cyberinfrastructure and Chemistry division and will be led by Professors Cecilia Clementi (Rice) and Shantenu Jha (Rutgers). The goal of the workshop is to “promote interaction between end users and software developers” in the increasingly decentralized software environment needed to attack challenges in molecular simulation. Sengar is investigating how organic semiconductors might be used to select specific sizes of carbon nanotubes, a joint project with Princeton University (Loo group). Sorenson is focusing on nucleation processes in perovskite materials for photovoltaics.
Clancy group member, Victoria Sorg, passed her examination for Admission to Candidacy to the PhD (8/11/15) with flying colors. Tori gave a masterful introduction of the use and advantages of laser spike annealing InGaAs samples. The highlight of her talk was a dramatic (20%) improvement in carrier concentration as a result of their LSA treatment. This work has been presented to SRC member companies via an “e-Workshop” and in our annual SRC review. Tori is the first author on a recently accepted invited ECS paper describing this work. She is expected to graduate in 2017.
Ms. Jovana Andrejevic, AEP ’16 at Cornell has been awarded a GlobalFoundries/SRCEA (Semiconductor Research Corporation Education Alliance) student scholarship that “recognizes and rewards aspiring and leadership-oriented engineers interested in the semiconductor industry. This exciting scholarship is for students who demonstrate solid ambition and promise in their academic and professional efforts.” In addition to a financial scholarship prize, Jovana will receive an all-expenses paid trip to TECHCON in Fall 2015. Jovana was rewarded for her academic performance and her innovative research in computational method development. She has developed models that capture the nucleation and growth of non-traditional materials of interest to the semiconductor field, including colloidal lead chalcogenides and perovskites. Her work, mentored by senior PhD candidate James Stevenson, is being prepared for publication this summer.
Mardochee Reveil was presented with the “First Year Graduate Student of the Year” award by the Cornell office of Diversity Programs in Engineering on Friday May 8th. for his outstanding progress in research. Mardochee joined the Clancy group in November 2014 following his MS degree from Syracuse University. In just his first six months as a PhD student, he successfully extended a software suite called CLASP (Cornell Laser Annealing Simulation Package) to include non-traditional materials like InGaAs, which is a candidate to replace silicon in future semiconductor devices. CLASP is used by a number of semiconductor industries such as GlobalFoundries and Novellus. Mardochee was also selected from a very competitive pool to be a participant in a CECAM workshop on multiscale modeling at the Les Houches School of Computational Physics taking place fromMay 11-22 2015 in France.
Suki Zhang successfully defended her MS thesis on May 5th 2015. Her thesis describes the ability of Laser Spike Annealing to improve dopant activation in InGaAs over traditional, slower, heating processes like furnace annealing or RTA. Suki will join the PhD program at Purdue University in ECE this summer. Congratulations, Suki; we will miss your enthusiasm and smiling face in the lab.
III-V team gathered after Suki’s thesis defence.
Front row (L-R): Chinmaya Joshi, Jingyang Wang.
Back row (L-R): Profs. Michael Thompson and Paulette Clancy, Suki Zhang, Megan Hill*, Victoria Sorg.
*Recent NSF Grad Fellowship winner, Megan Hill, will also leave the team this month; she will join the PhD program in MSE at Northwestern. Good luck, Megan.
Congratulations to PhD candidate, James Stevenson, of the Clancy group for winning this year’s AIChE CoMSEF conference presentation award. This award “recognizes excellence and rewards significant contributions in research.” COMSEF is AIChE’s Computational Materials Science and Engineering Forum and is the “home” for much of the molecular simulation research within AIChE.
Jingyang Wang gave his first public talk talk to the SRC TAB (Technical Advisory Board) for his ab initio InGaAs computational studies. Jingyang did an excellent job speaking clearly and slowly and telling his story in a straightforward and interesting way. Congratulations to Jingyang!
A. M. Hiszpanski, J. D. Saathoff, L. Shaw, H. Wang, L. Kraya, F. Lüttich, M. Brady, M. L. Chabinyc, A. Kahn, P. Clancy, and Y-L. (Lynn) Loo, Halogenation of a Non-Planar Molecular Semiconductor to Tune Energy Levels and Band Gaps for Electron Transport, Chem. of Materials, 27, 1892 (2015)
-Jonathan’s contribution was a set of ab initio calculations for contorted halogenated hexabenzocoronene semiconductors (think small pieces of graphene) with the inspired realization that the effect of halogen -F or -Cl was less important than the electron density that they provide.
J.M. Stevenson, W. Foud, D. Shalloway, D. Usher, J. Lunine, W. Chapman and P. Clancy, Solvation of nitrogen compounds in Titan’s seas, precipitates, and atmosphere, Icarus, in press (2015)
-This joint effort with researchers at Rice University TX, Faud and Chapman, defined the solubility of many important chemicals found in Titan’s seas and atmosphere. The Rice folks used a variety of equation of state methods including SAFT; James’s contributions were the free energy calculations of the relevant species.
V. C. Sorg, S.N. Zhang, M. Hill, P. Clancy, M. O. Thompson, Dopant Activation and Deactivation in InGaAs during Sub-Millisecond Thermal Annealing,” Silicon Compatible Materials, Processes, and Technologies for Advanced Integrated Circuits and Emerging Applications 5 issue of “ECS Transactions” (ECST) from the ECS Chicago meeting, in press (2015)
-This is Tori’s first paper from her thesis work (congratulations!) that describes the significant progress that she and her team (Suki and Megan) have made to understand dopant activation in InGaAs using laser annealing and its exposition using Raman. Tori’s development of Raman expertise brings new skills to the Thompson lab.