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Speaker: Dr. Andrea Hodge, USC

October 8, 2021 @ 11:00 am - 12:00 pm

Speaker: Andrea Hodge, University of Southern California 

Title: “Designing Microstructures via Nano Multilayers

Abstract: Nano multilayers (NMs) films consist of alternating layers of materials with thicknesses on the order of nanometers and typically display many attractive properties which are attributed to the fact that, as the layer thicknesses decrease, the individual layer behavior changes and the interface volume increases.  In this presentation, I will show how to synthesize and characterize systems of nanostructured multilayers, leveraging nanoscale features to enhance properties and function. To address this, samples with a wide range of composition and layer thicknesses were synthesized via DC/RF and reactive magnetron sputtering. Multilayer configurations of metal/metal, ceramic/metal and ceramic/ceramic systems were designed as model systems for either optical optimization or thermal studies. The contributions of both interface properties and composition are generalized to identify global relationships between predictions of nanoscale microstructures and the final observed nanostructures. The microstructural synergies and differences within four distinct model systems Hf-Ti, Ta-Hf, W-Cr, Mo-Au in as-sputtered condition and after annealing are presented. This approach assesses the relationship between initial characteristics and heat-treated microstructures as a pathway to develop highly tailored nanoscale microstructures.

Biography: Andrea Hodge holds the Arthur B. Freeman Professorship of Chemical Engineering and Materials Science and of Aerospace and Mechanical Engineering.  She received her Ph.D. degree in Materials Science from Northwestern University, in 2002.  Prof. Hodge served as the Vice Provost for undergraduate programs at USC from July 2016 to June 2020.  She is currently Co-Director for Core Center of Excellence in Nano Imaging (CNI) and Chair of the Chemical Engineering and Materials Science Department.  She joined USC as an Assistant Professor in 2007 and has co-authored over 90 peer-reviewed publications and two book chapters.  Her research focus is the synthesis and microstructural control of nanoscale metals and ceramics.  Dr. Hodge is the recipient several prestigious research, mentoring and teaching awards such as, the Minerals Metals and Materials Society (TMS) Julia and Johannes Weertman Educator Award (2020) which speak to her broad educational impact and commitment to serving students.

Details

Date:
October 8, 2021
Time:
11:00 am - 12:00 pm
Event Category:

Venue

EB1 – Room 1011
911 Partners Way
Raleigh, NC 27695-7907 United States

Organizer

MSE Department
Phone
919.515.2377
View Organizer Website

Other

Speaker
Dr. Andrea Hodge
Host
Dr. Donald Brenner