BEGIN:VCALENDAR
VERSION:2.0
PRODID:icalendar-ruby
CALSCALE:GREGORIAN
X-WR-CALNAME:MSE Seminar Series: Jan Schroers (Yale)
X-WR-TIMEZONE:Eastern Time (US & Canada)
BEGIN:VEVENT
DTSTAMP:20261012T211014Z
UID:tag:localist.com\,2008:EventInstance_45587528200307
DTSTART:20240222T210000Z
DTEND:20240222T220000Z
DESCRIPTION:Nanomolding for Nanofabrication and as a Microstructure Charact
 erization Tool\n\nAttracted by their desired functional properties\, signi
 ficant effort has been taken during the last two decades in the developmen
 t of nano fabrication techniques for metals. A wide range of bottom-up and
  top-down techniques have been developed. Those techniques\, however\, are
  generally limited in some critical respects such as material choice\, geo
 metry\, and/or scalability.\n\nA highly versatile and widely used fabricat
 ion method is molding\, which is generally associated with a soft state of
  a material. Nanomolding has been realized for polymers\, gels\, and some 
 glasses that soften at elevated temperatures\, but is limited for crystall
 ine metals\, that remain hard in their crystalline state. The supercooled 
 liquid state in metallic glasses had enabled nanomolding metallic glasses 
 with exciting electrochemical\, optical\, and cell response properties. Ho
 wever\, as the formation of metallic glasses is limited to a small number 
 of alloys\, broad utilization of alloy chemistry to optimize functional pr
 operties has been limited with thermoplastic nanomolding of metallic glass
 es.\n\nRecently\, we discovered that nanomolding is possible with crystall
 ine metals. Scaling considerations suggest that the underlying process is 
 based on atomic diffusion and the driving force is realized by a pressure 
 gradient between the top of the feedstock material and the tip of the nano
 rod. Most effective\, at ~0.5 T M such thermomechanical nanomolding (TMNM)
  results in single crystal nanowires of very high aspect ratio of up to ~1
 000 and as small as 5 nm in diameter.\n\nAs the underlying diffusion proce
 ss is present in all metals and alloys\, TMNM offers itself as a versatile
  nanomolding technique. In some cases\, TMNM results in the formation of n
 anorods of the same composition than the feedstock\, and in other cases in
 to drastic composition changes. For example\, intermetallic phases can be 
 precisely molded resulting into single crystal intermetallic nanorods wher
 eas some solid solutions result in essentially elemental nanorods. TMNM ca
 n be essentially used to fabricate nanowires from all metals and most allo
 ys (solid solutions\, intermetallic\, and eutectics).\n\nIn addition to th
 e use of TMNM as a versatile nanofabrication method\, it can also be explo
 red to characterize the deformation behavior of microstructures. Here loca
 l mechanism can be revealed in a massively parallel manner with a special 
 resolution of ~10 nm over the entire microstructure(cm2 ). Hence\, TMNM ma
 y help decode the deformation behavior of microstructures understand compl
 ex properties including creep\, fatigue\, and aspects of corrosion.\n \n\n
 Bio:\nJan Schroers\, an internationally recognized leader in the rapidly d
 eveloping field of bulk metallic glasses\, was recently appointed the Robe
 rt Higgin Professor of Mechanical Engineering and Materials Science\, effe
 ctive immediately.\n\nHe is a faculty member at the Yale School of Enginee
 ring & Applied Science (SEAS).\n\nSchroers joined the Yale faculty in the 
 Department of Mechanical Engineering in 2006\, following a postdoctoral fe
 llowship at the California Institute of Technology and working as director
  of research at Liquidmetal Technologies. At Yale\, his research has focus
 ed on the study of bulk metallic glasses\, a relatively new class of mater
 ials made from complex\, multicomponent alloys that have the moldable plia
 bility of plastics\, but the strength of metals. Some of his many contribu
 tions to the field include the discovery and explanation of ductility in m
 etallic glasses\, the development of bulk glasses based on gold\, and the 
 introduction of high temperature metallic glasses.\n\nFor his work\, Schro
 ers received the 2017 Lee Hsun Award from the Chinese Academy of Sciences.
  He has also led the organization of numerous international symposia and s
 erved as scientific advisor to commercial companies\, including Liquidmeta
 l Technologies\, Desktop Metals\, and Supercool Metals.
GEO:42.443844;-76.483292
LOCATION:Kimball Hall\, B11
SUMMARY:MSE Seminar Series: Jan Schroers (Yale)
URL;VALUE=URI:https://events.cornell.edu/event/mse_seminar_series_jan_schro
 ers_yale
CATEGORIES:Seminar
END:VEVENT
END:VCALENDAR