M
Melinda Y. Han
Researcher at Columbia University
Publications - 12
Citations - 8358
Melinda Y. Han is an academic researcher from Columbia University. The author has contributed to research in topics: Graphene & Graphene nanoribbons. The author has an hindex of 12, co-authored 12 publications receiving 7890 citations.
Papers
More filters
Journal ArticleDOI
Energy band-gap engineering of graphene nanoribbons.
TL;DR: It is found that the energy gap scales inversely with the ribbon width, thus demonstrating the ability to engineer the band gap of graphene nanostructures by lithographic processes.
Journal ArticleDOI
Current saturation in zero-bandgap, top-gated graphene field-effect transistors.
TL;DR: The first observation of saturating transistor characteristics in a graphene field-effect transistor is reported, demonstrating the feasibility of two-dimensional graphene devices for analogue and radio-frequency circuit applications without the need for bandgap engineering.
Journal ArticleDOI
Reversible basal plane hydrogenation of graphene.
Sunmin Ryu,Melinda Y. Han,Janina Maultzsch,Tony F. Heinz,Philip Kim,Michael L. Steigerwald,Louis E. Brus +6 more
TL;DR: Hydrogenation, forming sp3 C--H functionality on the basal plane of graphene, proceeds at a higher rate for single than for double layers, demonstrating the enhanced chemical reactivity of single sheet graphene.
Journal ArticleDOI
Infrared spectroscopy of Landau levels of graphene.
Zhigang Jiang,Erik Henriksen,Li-Chun Tung,Y. J. Wang,Mollie Schwartz,Melinda Y. Han,Philip Kim,Horst Stormer,Horst Stormer +8 more
TL;DR: In infrared studies of the Landau level (LL) transitions in single layer graphene, the lack of precise scaling between different LL transitions indicates considerable contributions of many-particle effects to the infrared transition energies.
Journal ArticleDOI
Electron and Optical Phonon Temperatures in Electrically Biased Graphene
TL;DR: For a given optical phonon temperature, the anharmonic downshift of the Raman G mode is smaller than expected under equilibrium conditions, suggesting that the electrons and high-energy optical phonons are not fully equilibrated with all of the phonon modes.