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SUMMARY:MechE Seminar: Engineering functionality through dynamic visualiza
 tion and control of atomic motions
DTSTART:20220214T160000
DTEND:20220214T170000
DTSTAMP:20260407T095819Z
UID:9ffd689571e31a9e551bf7248ff15c0ce878bc2e09dd112635b8c821
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr. Aditya Sood\, SLAC National Laboratory\, Stanford Institut
 e for Materials and Energy Sciences (SIMES)\, Stanford University\nAbstrac
 t: Advances in energy\, computing\, and medicine rely on the discovery of 
 dynamic materials\, whose properties can be tuned in real time via externa
 l stimuli – this is key to engineering “smart” systems that can resp
 ond rapidly to changing environments. This paradigm necessitates a microsc
 opic understanding of how materials respond transiently to external pertur
 bations\, which can ultimately drive useful changes in macroscale properti
 es. In this seminar\, I will present three examples of functionalities ari
 sing from the modulation of atomic structure on timescales spanning twelve
  orders of magnitude. On the timescale of seconds\, I will show how electr
 ochemical ion intercalation into a layered material can drive large (~10x)
  reversible tuning of heat transport\, for applications in dynamic thermal
  management[1]–[3]. On the microsecond timescale\, I will demonstrate ho
 w electrical excitation of a phase-changing oxide can trigger the formatio
 n of an intermediate electronic state\, with implications for low-energy c
 omputing[4]. Finally\, on the picosecond timescale\, I will discuss how ul
 trafast optical excitation can induce giant (>100x) enhancement of thermal
  transport rates across 2D atomic junctions\, a finding that is important 
 for engineering next-generation optoelectronic devices[5]. These results i
 llustrate the power of dynamic control as a tool for on-demand programming
  of materials\, with applications in various areas of energy and computing
 .\n\n[1]   A. Sood et al.\, “An electrochemical thermal transistor\,
 ” Nat. Commun.\, vol. 9\, p. 4510\, 2018.\n[2]   A. Sood et al.\, “Q
 uasi-ballistic thermal transport across MoS2 thin films\,” Nano Lett.\, 
 vol. 19\, no. 4\, pp. 2434–2442\, 2019.\n[3]   A. Sood et al.\, “Ele
 ctrochemical ion insertion from the atomic to the device scale\,” Nat. R
 ev. Mater.\, vol. 6\, no. 9\, pp. 847–867\, 2021.\n[4]   A. Sood et al
 .\, “Universal phase dynamics in VO2 switches revealed by ultrafast oper
 ando diffraction\,” Science\, vol. 373\, no. 6552\, pp. 352–355\, 2021
 .\n[5]   A. Sood et al.\, “Bidirectional phonon emission in two-dimens
 ional heterostructures triggered by ultrafast charge transfer\,” under r
 eview\, 2021.\n\nBiography: Dr. Aditya Sood is a Research Scientist at the
  Stanford Institute for Materials and Energy Sciences (SIMES) at Stanford 
 University & SLAC National Laboratory\, working with Prof. Aaron Lindenber
 g and Prof. William Chueh. He earned his B.Tech. from the Indian Institute
  of Technology (IIT) Kanpur and Ph.D. from Stanford University\, both in M
 aterials Science and Engineering. His Ph.D. research was done under the su
 pervision of Prof. Kenneth Goodson in the Department of Mechanical Enginee
 ring at Stanford\, in close collaboration with the group of Prof. Eric Pop
  in Electrical Engineering. His interests lie at the intersection of therm
 al transport\, nanoelectronics\, and ultrafast physics\, with a focus on v
 isualizing and controlling atomistic dynamics across a range of technologi
 cally-relevant timescales. He has received the Batra Gold Medal from IIT f
 or outstanding undergraduate performance (2011)\, the Gold Graduate Studen
 t Award from the Materials Research Society for his Ph.D. research (2017)\
 , and the LCLS Young Investigator Award from SLAC National Laboratory for 
 his postdoctoral work (2021). For more information\, see https://sites.goo
 gle.com/view/adityasood.
LOCATION:https://epfl.zoom.us/j/64615347011
STATUS:CONFIRMED
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