Plate Mechanical Metamaterials and Their Applications

Bargatin, Igor

Title:

Plate Mechanical Metamaterials and Their Applications

dc.contributor.author	Bargatin, Igor
dc.contributor.corporatename	Georgia Institute of Technology. Institute for Electronics and Nanotechnology	en_US
dc.contributor.corporatename	University of Pennsylvania	en_US
dc.date.accessioned	2019-10-08T18:50:57Z
dc.date.available	2019-10-08T18:50:57Z
dc.date.issued	2019-09-10
dc.description	Presented on September 10, 2019 at 12:00 p.m.-1:00 p.m. in the Marcus Nanotechnology Building, Room 1117-1118, Georgia Tech.	en_US
dc.description	Igor Bargatin received his undergraduate degree in theoretical physics from the Lomonosov Moscow State University, and a Ph.D. degree in physics and electrical engineering from the California Institute of Technology, Pasadena. After postdoctoral appointments at LETI/Minatec (Grenoble, France) and Stanford University, he became the Class of 1965 Term Assistant Professor in the Department of Mechanical Engineering and Applied Mechanics (MEAM), University of Pennsylvania. Prof. Bargatin’s research interests are focused on micro- and nanomechanical structures for new applications in energy conversion, ultra-lightweight materials, and new mechanisms of levitation. He is a recent recipient of the NSF CAREER award and the Penn Engineering teaching award.	en_US
dc.description	Runtime: 58:09 minutes	en_US
dc.description.abstract	Recently, we introduced the concept of plate mechanical metamaterials—cellular plates with carefully controlled periodic geometry and unique mechanical properties—as well as its initial realization in the form of freestanding corrugated plates made out of an ultrathin film. We used atomic layer deposition (ALD) and microfabrication techniques to make robust plates out of a single continuous ALD layer with cm-scale lateral dimensions and thicknesses between 25 and 100 nm, creating the thinnest freestanding plates that can be picked up by hand. We also fabricated and characterized nanocardboard - plate metamaterials made from multiple layers of nanoscale thickness, whose geometry and properties are reminiscent of honeycomb sandwich plates or corrugated paper cardboard. Ultralow weight, mechanical robustness, thermal insulation, as well as chemical and thermal stability of alumina make plate metamaterials attractive for numerous applications, including structural elements in flying microrobots and interstellar light sails, high-temperature thermal insulation in energy converters, photophoretic levitation, as well as ultrathin sensors and resonators. I will briefly discuss our experimental progress on all these applications, including demonstrations of extremely robust thermal insulators that can sustain a temperature difference of ~1000 K across a micron-scale gap, hollow AFM cantilevers that offer greatly enhanced sensitivity and data acquisition rates, and macroscopic plates that levitate when illuminated by light.	en_US
dc.format.extent	58:09 minutes
dc.identifier.uri	http://hdl.handle.net/1853/61904
dc.language.iso	en_US	en_US
dc.publisher	Georgia Institute of Technology	en_US
dc.relation.ispartofseries	Nano@Tech Lecture Series
dc.subject	Mechanical metamaterials	en_US
dc.subject	Nanotechnology	en_US
dc.subject	Photophoretic levitation	en_US
dc.title	Plate Mechanical Metamaterials and Their Applications	en_US
dc.type	Moving Image
dc.type.genre	Lecture
dspace.entity.type	Publication
local.contributor.corporatename	Institute for Electronics and Nanotechnology (IEN)
local.relation.ispartofseries	Nano@Tech Lecture Series
relation.isOrgUnitOfPublication	5d316582-08fe-42e1-82e3-9f3b79dd6dae
relation.isSeriesOfPublication	accfbba8-246e-4389-8087-f838de8956cf