RSSEL

Radiation Surface Science and Engineering Lab

Simulation of GaSb surface nanopatterning by Directed Irradiation Synthesis (DIS) highlighted in Blue Waters NCSA 2016 Report

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RSSEL’s Multi-scale Computational Irradiation Surface Science team was invited to present highlights from their research that leveraged Blue Waters petascale supercomputer at the National Center for Supercomputing Applications (NCSA).

Massive-scale atomistic simulations used while developing directed irradiation synthesis of ordered nanodots and other nanostructures are necessary to address knowledge gaps in existing theories of nanopattern formation and growth.

The work completed involved conducting MD simulations of 3 million atoms for nearly 50 million time steps. On a conventional supercomputing cluster this would take multiple years to complete. Production runs on Blue Waters were able to simulate up to 10 million time steps on 128 nodes in just 48 hours, allowing the majority of the production runs to be completed in less than two months actual time. The 2016 Blue Waters report highlights RSSEL’s work on page 96, and complete research results were published in the journal Nucl. Instrum. Methods Phys. B in April 2017: Massive-scale molecular dynamics of ion-irradiated III–V compound semiconductors at the onset of nanopatterning

Prof. Allain recognized with Dean’s Award for Excellence in Research

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Professor Allain has received the 2017 College of Engineering Dean’s Award for Excellence in Research for his work unifying concepts from nanotechnology, nuclear engineering and materials science.

NPRE Department Head Jim Stubbins highlighted Prof. Allain’s research group for its impact forging new fundamental and applied research directions in emergent areas of material surfaces and interfaces exposed to extreme environments, as well as pioneering the use of in-situ and in-operando surface diagnosis and directed irradiation synthesis, complemented with multi-scale modeling developed to support these research themes.

For full NPRE Illinois article follow this link.

Magnetic Bacterial Nanocellulose (MBNC) highlighted in Advanced Science News

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Advanced Science News featured the article Magnetic Healing of Brain Injury by Professor Allain’s group highlighting the magnetic natural hydrogel MBNC as a novel, multi-functional biomaterial that would provide a focal magnetic attractive force at the local region near the aneurysm neck orifice.  The RSSEL group recently published on this new alternative method of using scaffold stents to create a local and focal attraction force of cells for an in situ reconstruction of the tunica media in the article titled Bacterial Nanocellulose Magnetically Functionalized for Neuro-Endovascular Treatment in the journal of Macromolecular Bioscience.

Prof. Allain presents invited seminar at Los Alamos National Laboratory

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Professor Allain was invited to Los Alamos National Laboratory, Materials Science & Technology Division where he presented the seminar titled “Challenges to a foundational understanding of the plasma-material interface in plasma-burning nuclear fusion reactors”.

 

Hanna Schamis’ internship at ITER strengthens collaboration in PMI

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iterHanna Schamis will be the first RSSEL graduate student to conduct research at ITER during her five month internship opportunity at the world’s largest fusion experiment in Spring 2017. Under the supervision of  Gregory de Temmerman, Coordinating Scientist Plasma Edge & PWI Science and Operations Department (SCOD)/Science Division (SD)/Tungsten Divertor & Plasma-Wall Interactions Section (TDPW),  Hanna will be working on the modeling of erosion /deposition on ITER first mirrors during glow discharge cleaning. The internship at ITER facilities in Saint Paul Lez Durance, France is an exciting opportunity that will strengthen collaboration in PMI research with Illinois, NPRE and Professor Allain’s RSSEL research group.

The ITER project is an international nuclear fusion research and engineering megaproject, which will be the world’s largest magnetic confinement plasma physics experiment. It is an experimental tokamak nuclear fusion reactor that is being built in Cadarache, southern France.

Brandon Holybee receives the Lam Research Corporation Scholarship

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lamCongratulations to Brandon Holybee, who has been selected to receive the prestigious Lam Research Corporation Scholarship. Lam Research Corporation is an American corporation that engages in the design, manufacture, marketing, and service of semiconductor processing equipment used in the fabrication of integrated circuits.

Felipe Bedoya and Hanna Schamis’ work highlighted by PPPL Weekly

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logoNPRE’s graduate students Felipe Bedoya and Hanna Schamis have been highlighted for their work at the Princeton Plasma Physics Laboratory (PPPL) this year.

Felipe Bedoya was a visiting graduate student at PPPL during the last NSTX-U run period, during which he took thesis data with the Materials Analysis and Particle Probe (MAPP) developed at RSSEL.  Bedoya used the new diagnostic, MAPP, to insert graphite and molybdenum alloy (TZM) samples into the NSTX-U vacuum vessel for exposure during boronization and subsequent plasma operations.  The device enables scientists to decipher the chemical make-up of the surface of materials exposed to plasma, while keeping the materials in a vacuum. The research was published in the July issue of Review of Scientific Instruments, and was funded by the DOE Office of Science (Fusion Energy Sciences). For the complete article read: PPPL researchers successfully test new device that analyzes the surfaces of tokamak components within a vacuum

Hanna Schamis spent two summers as an intern in the Science Undergraduate Laboratory Internship (SULI) at PPPL. Schamis’ research this summer focused on an alloy of molybdenum (TZM), a plasma-facing material that will be used to line the divertor, a part of the machine that collects heat and particles from the plasma. Schamis used MAPP to conduct her experiment and analyze the effect of the plasma on the chemical composition of the TZM over time.

This is the first time measurements of this kind have been performed on a large fusion device like NSTX-U given the importance of surface chemistry and physics and is part of Prof Allain’s broad portfolio in  fusion PMI research.