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Graduate Student Researcher

Desalegne B. Teweldebrhan

Mailing Address:

Desalegne B. Teweldebrhan

Suite 343 Engineering Building Unit 2

University of California, Riverside
900 University Ave.
Riverside, CA 92521

Contact Information:

Office: (951) 827-7181

Fax: (951) 827-2425

E-mail: dTeweldebrhan@ee.ucr.edu

Department of Electrical Engineering

Nano-Device Laboratory (NDL)

· Graphene Irradiation Modification APL paper receives some media coverage, 2009.

[Nanowerk] [Nanotechweb] [Bourns Engineering News]

· D. Teweldebrhan and A.A. Balandin “Modification of Graphene Properties via Electron-Beam irradiation” 35^th Annual NSBE National Convention, Las Vegas, NV (March 2009) – Invited Talk [Link]

· Recepient of NSF-UCR Bridge Doctorate Graduate Fellowship, 2007-2009 [NSF Link]

· Awarded ‘Undergraduate Researcher of the Year Award’, UCR Physics Department, 2007 Recipient Physics Award 2007

· D. Teweldebrhan and A.A. Balandin, “Electron-Beam Irradiation Damage of Graphene and Graphene Devices” Graphene Week 2009, Universitätszentrum Obergurgl ( Ötz Valley, near Innsbruck), Austria (March 2009)

· A.A. Balandin, S. Ghosh, W. Bao, I. Calizo, D. Teweldebrhan, F. Miao, C. N. Lau. “Extremely High Thermal Conductivity of Graphene: Experimental Study.” Nano Letters, 8, No. 3, 902-907 (2008).

· Awarded $2500 Grant by UCR Grad Division to attend “Graphene Week 2009” in Austria, Europe [ESF-FWF]

E-mail: dTeweldebrhan@ee.ucr.edu

· D. Teweldebrhan and A. A. Balandin, “Modification of Graphene Properties due to Electron-Beam Irradiation,” Applied Physics Letters, 94: 013101 (2009). [APL]

· D.L. Nika, E.P. Pokatilov and A.A. Balandin (D. Teweldebrhan*) “Phonon Engineered Silicon – Diamond Nanoscale Heterostructures,” IEEE SI – NANO Workshop, Honolulu, HI (2008). *Presented Talk on behalf of A.A. Balandin

· D. Teweldebrhan, S. Ghosh, W.Bao, I. Calizo, F. Miao, C.N. Lau and A.A. Balandin “Graphene as Superior Heat Conductor: Thermal Management Applications in Nanoelectronics,” 6^th Japan- US Joint Seminar on Nanoscale Transport Phenomena—Science and Engineering, Radisson (MIT), Boston, MA (July 2008)

Department of Electrical Engineering

Research Highlights

I am currently pursuing a Ph.D. degree, under the supervision of Prof. Alexander Balandin in the field of fabrication and characterization of nanoscale materials and devices, at the Nano-Device Laboratory in the Department of Electrical Engineering, University of California - Riverside (UCR) since Fall 2007.

From 2005-2007, I worked as a Research Assistant in the Department of Physics and Astronomy at UCR specializing in the high temperature—ultra high vacuum MBE growth of SiC-based graphene for applications.

Current research focuses includes thermal transport properties of nanostructured using laserflash method, Raman Spectroscopy characterization of different nano-materials, nanostructures and devices, e-beam particle irradiational effects to graphene and few-layer graphene, alternative sources of graphene fabrication using high pressure high temperature growth methods, thermal characterization of graphene, and electronic characterization of graphene-based electronic devices (e.g. transistors) for future beyond CMOS technology fabricated at .

Student Researcher of the FCRP Center on Functional Engineered Nano Architectonics (FENA) at UCLA and Interconnect Focus Center (IFC) at Georgia Tech under Semiconductor Research Corporation (SRC).

Selected Publications and Presentations