Keith A. Williams

Published in 14 refereed journals: ChemPhysChem, Chemical Physics Letters, Chemistry of Materials, JACS, Journal of Raman Spectroscopy, JPCB, MRS Bulletin, Nature, Nano Letters, Nanotechnology, Physica B, PRL, Science, and Thin Solid Films. Citation count in 12 years: ~3000 (ISI). PDF reprints available upon request.

[26]Jack Chan, Brian Burke, Michael Cabral, Chong Hu, Joe Campbell, Lloyd Harriott, and Keith A. Williams, “Tuning transport in carbon nanotube field-effect transistors by low-energy electron beam exposure and applied universal backgate” Journal of Physics: Condensed Matter (in review).

[25]Jack Chan, Brian Burke, Chong Hu, Joe Campbell, Lloyd Harriott, and Keith A. Williams, “Electron Beam Induced Two-State Noise in Carbon Nanotubes” MRS Conf. Proceedings (accepted December 2009).

[24]Brian Burke, Jack Chan, Keith Williams, Zili Wu, Alexander Puretzky, David Geohegan, “Raman study of Fano interference in p-type doped silicon” Journal of Raman Spectroscopy, accepted 17 December 2009.

[23]Brian G. Burke, Jack Chan, Keith A. Williams, Jiechao Ge, Chunying Shu, Wujun Fu, Harry C. Dorn, James G. Kushmerick, Alexander A. Puretzky, David B. Geohegan, “Investigation of Gd3N@C2n (40 < n < 44) family by Raman and inelastic electron tunneling spectroscopy”. Physical review B (accepted January 2010); Los Alamos Archive link: http://arxiv.org/abs/0910.5273.

[22]Chunying Shu, Jiechao Ge, Jianfei Zhang, Jae Hyun Sim, Brian G. Burke, Keith A. Williams, Nichole Rylander, Tom Campbell, David Geohegan, Alan R. Esker, Harry W. Gibson, and Harry C. Dorn, "A Facile High-speed Vibration Milling Method to Water-Solubilize Single-walled Carbon Nanohorns", Chem. of Materials (accepted Nov. 2009; in press).

[21] Tsz Wah (Jack) Chan , Brian Burke , Kenneth Evans , Keith Williams, Smitha Vasudevan, Mingguo Liu , Joe Campbell , Avik Ghosh, "Multiple-Trap Correlations in the Room-Temperature Random Telegraph Signal of a Carbon Nanotube Field-Effect Transistor" Physical Review B 80, 033402 (2009).

[20] Tsz Wah (Jack) Chan , Brian Burke , Kenneth Evans , Keith Williams, Smitha Vasudevan , Kamil Walczak , Mingguo Liu , Joe Campbell , Avik Ghosh, "Multiple-Trap Correlations in the Room-Temperature Random Telegraph Signal of a Carbon Nanotube Field-Effect Transistor" submitted (2008).

[19] Brian G Burke, Timothy J Herlihy Jr, Andrew B Spisak and Keith A Williams, "Deep-UV Pattern generation in PMMA" Nanotechnology 19 215301 (2008).

[18] Lingling Wu, Fernanda Camacho-Alanis, Keith Williams, Giovanni Zangari, Nathan Swami "Electrical contacts to Molecular Devices by Electroless Deposition of Copper on carboxylic acid terminated self-assembled monolayers on GaAs" Electrochemical Society Conf. proceedings (2007).

[17] Hendrik A. Heering, Keith A. Williams, Simon de Vries, and Cees Dekker, “Specific vectorial immobilization of oligonucleotide-modified yeast cytochrome C on carbon nanotubes” ChemPhysChem 7(8) 1705-9 (2006).

[16] Iddo Heller, Jing Kong, Hendrik A. Heering, Keith A. Williams, Serge G. Lemay, and Cees Dekker, "Electrochemistry at Single Walled Carbon nanotubes: The Role of Band structure and Quantum Capacitance" J. Am. Chem. Soc. 128(22) 7353-9(2006).

[15] Iddo Heller, Jing Kong, Hendrik A. Heering, Keith A. Williams, Serge G. Lemay, and Cees Dekker, "Individual Single-Walled Carbon Nanotubes as Nanoelectrodes for Electrochemistry" Nano Letters 5(1)137-142 (2005).

[14] R. den Dulk, K.A. Williams, Peter T.M. Veenhuizen, M.C. de Koning, M. Overhand, Cees Dekker, "Self-Assembly Experiments with PNA-Derivatized Carbon Nanotubes" in press.

[13] K.A. Williams, Peter T.M. Veenhuizen, Beatriz G. de la Torre, Ramon Eritja, Cees Dekker, “Carbon nanotubes with DNA Recognition”, Nature 420(6917) 761 (2002). For related overview of bio/nano field, see: R. Service, Science 298 2322-3 (2002).

[12] K.A. Williams, Peter T.M. Veenhuizen, Beatriz G. de la Torre, Ramon Eritja, Cees Dekker, “Towards DNA-mediated Self Assembly of Carbon Nanotube Molecular Devices”, AIP Conf. Proc. 633 (2002) 444.

[11] K. A. Williams, B.K. Pradhan, P. C. Eklund, M. K. Kostov and M. W. Cole, “Raman Spectroscopic Investigation of H2, HD, and D2 Physisorption on Ropes of Single-Walled Carbon Nanotubes”, Phys. Rev. Lett. 88(16) 165502 (2002).

[10] Bhabendra K. Pradhan, Gamini U. Sumanasekera, Clement K. W. Adu, Hugo E. Romero, Keith A. Williams, and Peter C. Eklund, "Experimental Probes of the Molecular Hydrogen-Carbon Nanotube Interaction", Physica B 323(1-4) 115-21 (2002).

[9] K.A. Williams, Y.-Y. Fan, A.H. Harutyunyan, A. Cooper, G. Pez, and P.C. Eklund, “CVD Growth of Nanofibers from Iron Nanoparticles Synthesized by Laser Pyrolysis of Organometallic Precursors”, manuscript in preparation; abstract submitted for 2001 “Carbon” conference in Lexington, KY.

[8] X. Fan, E.C. Dickey, P.C. Eklund, K.A Williams, L. Grigorian, R. Buczko, S.T. Pantelides, and S.J. Pennycook, "Atomic Arrangement of Iodine Atoms inside Single-Walled Carbon Nanotubes", Phys. Rev. Lett., 84, No. 20 (2000) 4621-4.

[7] K.A Williams and P.C. Eklund, "Monte Carlo Simulations of H2 Physisorption in Finite-Diameter Carbon Nanotube Ropes", Chem. Phys. Lett., 320, 3/4 (2000) 352-8.

[6] M.S. Dresselhaus, K.A Williams, and P.C. Eklund, "Hydrogen Adsorption in Carbon Materials", MRS Bulletin, 24, No. 11 (1999).

[5] K.A. Williams, M. Tachibana, J.L. Allen, L. Grigorian, S-C. Cheng, S.L. Fang, G.U. Sumanasekera, A.L. Loper, J.H. Williams, P.C. Eklund, "Single-Wall Carbon Nanotubes from Coal", Chem. Phys. Lett., 310 1/2 (1999) 31-37.

[4] L. Grigorian, K.A. Williams, S. Fang, G.U. Sumanasekera, A.L. Loper, E.C. Dickey, S.J. Pennycook, P.C. Eklund, "Reversible Intercalation of Charged Iodine Chains into Carbon Nanotube Ropes" Phys. Rev. Lett., 80(25)(1998).

[3] S. Bandow, A.M. Rao, K.A. Williams, A. Thess, R.E. Smalley, P.C. Eklund, "Purification of Single Wall Nanotubes by Microfiltration" J. Phys. Chem. B 101 (44) (1997).

[2] T. Terui, K.A. Williams, Y. Fujikawa, T. Arai, S. Mashiko, and Y. Maruyama, "Annealing Effect for LaxC60 Thin Films", Thin Solid Films 331(1/2):113-116 (1998).

[1] A.M. Rao, E. Richter, S. Bandow, B. Chase, P.C. Eklund, K.A. Williams, S. Fang, K.R. Subbaswamy, M. Menon, A. Thess, R.E. Smalley, G. Dresselhaus, M.S. Dresselhaus,"Diameter-Selective Raman Scattering from Vibrational Modes in Carbon Nanotubes" Science 275 (1997).

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• Graduate Students:
• Brian Burke (graduating Spr. 2010, now at NIST)
• Tsz-Wah (Jack) Chan (graduating Spr. 2010, interviewing)
• Caixia Bu
• Nattawut Anuniwat
• Undergraduates:
• Aagya Mathur
• Kridsanaphong Limtragool

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• ““Electron Beam Tuning of Functional Carbon Nanostructures”, Dept. of Physics, GMU, February 2010.
• “Electron Beam Tuning of Functional Carbon Nanostructures”, Oak Ridge CNMS Sciences Program Review, 10 December 2009.
• “Carbon Nanomaterials for Ultracapacitors” Commonwealth of Virginia Energy Symposium, VMI, October 7-8, 2009.
• “Observation of Fano Interference and Field Dependence by Raman Spectroscopy of Molecularly Doped Silicon” B. Burke, K.A. Williams, March Meeting of the American Physical Society, Pittsburgh, March 2009.
• “Reversible current blockade of carbon nanotube through well resolved multitrap-interactions” J.Chan, K.A. Williams, March Meeting of the American Physical Society, Pittsburgh, March 2009.
• “Molecular Electronics- A New Approach” Virginia Tech Department of Physics, January 2008.
• “Deep UV Pattern Definition in PMMA” B. Burke, T. Herlihy, A. Spisak, K.A. Williams, March Meeting of the American Physical Society, New Orleans, 2008.
• “Direct-Write, Deep UV Pattern Definition in PMMA” A. Spisak, B. Burke, K.A. Williams, March Meeting of the American Physical Society, New Orleans, 2008.
• “Transient Random Telegraph Signal in carbon nanotube field effect transistors” J.Chan, B. Burke, K.Evans, K.A. Williams, March Meeting of the American Physical Society, New Orleans, 2008.
• “Controlling the Random Telegraph Signal in Carbon Nanotube FETs” K. Evans, J. Chan, K.A. Williams, March Meeting of the American Physical Society, New Orleans, 2008.
• "Molecular Electronics: A New Approach" K.A. Williams, Virginia Tech. CM Seminar, 28 Jan. 2008.
• "A Century of Photo Physics: Mitchell Memorial Colloquium" K.A. Williams, UVa Colloquium, 14 Sept. 2007.
• "Molecular Electronics: Past, present, and Future" K.A. Williams, UVa Colloquium, 9 Feb. 2007.

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• “Ciliated Pediatric Endotracheal Tube for Active Prevention of Ventilator-Associated Pneumonia and Related Method Thereof.” Helmke BP, Williams KA., U.S. Provisional Patent Application Serial No. 61/179,576, filed May 19, 2009.
• “System and Method for Deep Ultraviolet Direct Write Photolithography” Keith A. Williams, Brian G. Burke and Andrew Spisak, Provisional Patent No. 60/959,870 (2007).
• P.C. Eklund, L. Grigorian, K.A. Williams and G.U. Sumanasekera, “Thermoelectric Materials Based on Intercalated Layered Metallic Systems”, United States Patent No. 6,091,014 (2000).
• P.C. Eklund, L. Grigorian, K.A. Williams and G.U. Sumanasekera, “Metallic Nanoscale Fibers from Stable Iodine-Doped Carbon Nanotubes”, United States Patent No. 6,139,919 (2000).

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• Nanostar
• NSF
• DARPA
• ONR
• AFOSR
• NIH
• Grants.Gov

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