Judy J. Cha

Website:

Cha Research Group
Carol and Douglas Melamed Assistant Professor of Mechanical Engineering & Materials Science
Office Address:
Becton 209, 15 Prospect St, New Haven, CT; Lab: 311D, Molecular Innovations Center, 600 West Campus Dr, Orange, CT
Mailing Address:
P.O. Box 208284
New Haven, CT 06520
Phone: W. Campus: (203) 737-7293; Main Campus: (203) 432-2156
Fax: (203) 432-6775
Email: jeeyoung.cha@yale.edu
Degrees:
  • Ph.D., Cornell University
  • B.A. Sc., Simon Fraser University, Canada

Interests:

The Cha research group focuses on synthesis and transport measurements of two-dimensional layered nanochalcogenides, in particular topological insulator nanoribbons and nanoplates. The group uses analytical scanning transmission electron microscopy and electron energy-loss spectroscopy to investigate the fundamental structure-property relationships of the synthesized nanomaterials for novel electronic, photonic, and plasmonic properties. Other chalcogenide systems are also investigated for energy applications.

Selected Awards & Honors:

  • NSF CAREER (2018)
  • Canadian Institute for Advanced Research (CIFAR) Global Scholar on Quantum Materials (2017)
  • Yale Arthur Greer Memorial Prize (2016)
  • IBM Faculty Award (2014)
  • Presidential Student Award, Microscopy Society of America (2010)
  • Silver Award, Materials Research Society (2008, Spring)
  • Distinguished Scholar Award, Microbeam Analysis Society (2008)

Selected Publications:

Google Scholar 

  • Self-Healing of a confined phase change memory device with a metallic surfactant layer, Advanced Materials (2018)
  • Revealing the contribution of individual factors to hydrogen evolution reaction catalytic activity, Advanced Materials (2018)
  • Tailoring crystallization phases in metallic glass nanorods via nucleus starvation, Nature Communications (2017)
  • Structural phase transition and carrier density tuning in SnSexTe1-x nanoplates, Advanced Electronic Materials 2, 1600144 (2016)
  • One-step synthesis of MoS2/WS2 layered heterostructures and catalytic activity of defective transition metal dichalcogenide films, ACS Nano 10, p.2004-2009 (2016)
  • Nanoscale size effects in crystallization of metallic glass nanorods, Nature Communications 6:8157 (2015)
  • Revealing surface states in In-doped SnTe nanoplates with low bulk mobility, Nano Letters 15, p.3827-3832 (2015)
  • Metal seed layer thickness-induced transition from vertical to horizontal growth of MoS2 and WS2, Nano Letters 14, p.6842 - 6849 (2014)