California NanoSystems Institute
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George Gruner, Ph.D.

Scientist, Physics and Astronomy
Professor, Physics and Astronomy
Member, NanoElectronics, Photonics, Architectonics, California NanoSystems Institute

Ph.D., Hungarian Academy of Science, 1977
B.S., Eotvos Lorand University, Budapest, Hungary

Academic Experience:
Academic Experience:
Imperial College, London, Postdoctoral Associate

Contact Information:
Email Address:
Work Email Address:
Mailing Address: Mail Code: 154705
Los Angeles, CA 90095
Home Page:
ARR Papers:
Fax Number: (310) 825-5734
Office Phone Number: (310) 825-8782
Work Phone Number: (310) 206-9975 Assistant's phone number
Research Interests:

Professor Gruner's primary interests include the fabrication, investigation and application of nanoscale electronic materials and devices. The materials architectures include a network of nanoscale wires such as carbon nanotubes and polymeric nanofibers. Active electronic devices such as nano-scale transistors can also be fabricated using such networks. The research involves the exploration of the fundamental electronic properties of the material architectures involved, and of device oriented physical measurements. Large-scale fabrication avenues are also explored by the group. Merging electronics with biology is also part of the program pursued by the Gruner group. Size compatibility between devices and biological species, together with the charged nature of biomolecules lie behind such bio-electronics approach. The devices can be combined with a variety of species, thus giving the structures specific chemical or bio-functionality. Fabrication of elements of an artificial sensory system - converting a chem/bio presence into an electronic signal, together with the design and investigation of cell-device interfaces is currently also pursued.

Technical Research Interest:

Nano-bio-electronics. Fabrication, and exploration of nanoscale material architectures. Integration of biological systems and electronic devices. Applications in emerging technology areas, such as plastic electronics, printed photo-voltaics, and disposable biosensors.

Selected Publications:

Hu L, Hecht DS, Grüner G, Carbon nanotube thin films: fabrication, properties, and applications, Chem Rev, 2010, 110 (10), 5790-844.
Hu L, Li J, Liu J, Grüner G, Marks T, Flexible organic light-emitting diodes with transparent carbon nanotube electrodes: problems and solutions, Nanotechnology, 2010, 21 (15), 155202.
Hu L, Hecht DS, Grüner G, A method of fabricating highly transparent and conductive interpenetrated carbon nanotube-parylene networks, Nanotechnology, 2009, 20 (46), 465304.
Mark A. Topinka, Michael W. Rowell, David Goldhaber-Gordon, Michael D. McGehee, David S. Hecht and George Gruner, Charge transport in interpenetrating networks of semiconducting and metallic carbon nanotubes, Nano Lett, 2009, 9 (5), 1866-71.
Hu, L. B. Yuan, W. Brochu, P. Gruner, G. Pei, Q. B., Highly stretchable, conductive, and transparent nanotube thin films, Applied Physics Letters, 2009, 94 (16).
Kaempgen, M. Chan, C. K. Ma, J. Cui, Y. Gruner, G., Printable Thin Film Supercapacitors Using Single-Walled Carbon Nanotubes, Nano Letters, 2009, 9 (5), 1872-1876.
Zhao YL, Hu L, Grüner G, Stoddart JF, A tunable photosensor, J Am Chem Soc, 2008, 130 (50), 16996-17003.
Armitage NP (Armitage, N. P.), Crane RW (Crane, R. W.), Sambandamurthy G (Sambandamurthy, G.), Johansson A (Johansson, A.), Shahar D (Shahar, D.), Zaretskey V (Zaretskey, V.), Gruner G (Gruener, G.) , Direct observation of quantum superconducting fluctuations across the 2D superconductor-insulator transition, Physical B- Condensed Matter, 2008, 403 (5-9), 1208-1210.
Yuan W, Hu LB, Yu ZB, Lam TL, Biggs J, Ha SM, Xi DJ, Chen B, Senesky MK, Gruner G, Pei QB, Fault-tolerant dielectric elastomer actuators using single-walled carbon nanotube electrodes, Advanced Materials, 2008, 20 (3).
Xu H, Zhang SX, Anlage SM, Hu LB, Gruner G, Frequency- and electric-field-dependent conductivity of single-walled carbon nanotube networks of varying density, Physical Review B, 2008, 77 (7).
Jain V (Jain, Vaibhav), Yochum HM (Yochum, Henry M.), Montazami R (Montazami, Reza), Heflin JR (Heflin, James R.), Hu LB (Hu, Liangbing), Gruner G (Gruner, George, Modification of single-walled carbon nanotube electrodes by layer-by-layer assembly for electrochromic devices , Journal of Applied Physics, 2008, 103 (7).
Zhao YL (Zhao, Yan-Li), Hu LB (Hu, Liangbing), Stoddart JF (Stoddart, J. Fraser), Gruner G (Gruner, George) , Pyrenecyclodextrin-decorated single-walled carbon nanotube field-effect transistors as chemical sensors, Advanced Materials, 2008, 20 (10), 1910-1915.
Kaempgen M, Ma J, Gruner G, Wee G, Mhaisalkar SG , Bifunctional carbon nanotube networks for supercapacitors, Applied Physics Letters, 2007, 90 (26).
Gruner, G., Carbon nanonets spark new electronics, Sci Am, 2007, 296 (5), 76-83.
Kiebele A, Gruner G , Carbon nanotube based battery architecture, Applied Physics Letters, 2007, 91 (14).
Briman, M. Artukovic, E. Zhang, L. Chia, D. Goodglick, L. Gruner, G., Direct electronic detection of prostate-specific antigen in serum, Small, 2007, 3 (5), 758-62.
Crane R, Armitage NP, Johansson A, Sambandamurthy G, Shahar D, Gruner G , Survival of superconducting correlations across the two-dimensional superconductor-insulator transition: A finite-frequency study, Physical Review B, 2007, 75 (18).
G. Gruner., "Carbon Nanotube Transistors for Biosensing Applications", Analytical and Bioanalytical Chemistry, 2006, 384, 322.
Hecht, D. S. Ramirez, R. J. Briman, M. Artukovic, E. Chichak, K. S. Stoddart, J. F. Gruner, G., Bioinspired detection of light using a porphyrin-sensitized single-wall nanotube field effect transistor, Nano Lett, 2006, 6 (9), 2031-6.
Li J, Hu L, Wang L, Zhou Y, Grüner G, Marks TJ, Organic light-emitting diodes having carbon nanotube anodes, Nano Lett, 2006, 6 (11), 2472-7.
Li J, Hu L, Wang L, Zhou Y, Grüner G, Marks TJ, Organic light-emitting diodes having carbon nanotube anodes, Nano Lett, 2006, 6 (11), 2472-7.
Hecht, D.S.; Hu, L.; Gruner, G., "Electronic Properties of carbon nanotube/fabric composites", Current Applied Physics, 2005, 7 (1), 60-63.
Bradley, K. Davis, A. Gabriel, J. C. Gruner, G. , Integration of cell membranes and nanotube transistors, Nano Lett, 2005, 5 (5), 841-845.
Artukovic, E. Kaempgen, M. Hecht, D. S. Roth, S. Gruner, G., Transparent and flexible carbon nanotube transistors, Nano Lett, 2005, 5 (4), 757-60.
A. Star, K. Bradley, J.-C. P. Gabriel, G. Gruner., "Carbon nanotube nanoelectronic devices for chemical detection in liquid hydrocarbons", Fuel Chemistry Division Preprints, 2004, 49 (2), 887-888.
N.P. Armitage, M. Briman, G. Gruner., "Charge Transfer and Charge Transport on the Double Helix", Phys. Stat. Sol, 2004, 241, 69-75.
Briman, M., Armitage, N. P., Helgren, E., Gruner, G., "Dipole Relaxation Losses in DNA", Nano Lett. (Communication), 2004, 4 (4), 733-736.
A. Star, T.-R. Han, V. Joshi, J.-C. P. Gabriel, G. Gruner., "Nanoelectronic carbon dioxide sensors", Adv. Mater, 2004, 16 (22), 2049-2052.
A. Star, Y. Lu, K. Bradley, G. Gruner., "Nanotube optoelectronic memory devices", Nano Lett, 2004, 4, 1587-91.
L. Hu, D.S. Hecht and G. Gruner., "Percolation in Transparent and Conducting Carbon Nanotube Networks", Nano Letters, 2004, 4 (12), 2513-2517.
E. Helgren, N.P. Armitage, G. Gruner., "The Frequency Dependent Conductivity of Electron Glasses", Phys. Rev. B, 2004, 69 (1).
Bradley, K.; Briman, M.; Star, A.; Gruner, G., Charge Transfer from Adsorbed Proteins, Nano Lett, 2004, 4 (2), 253-256.
Star, A. Joshi, V. Han, T. R. Altoe, M. V. Gruner, G. Stoddart, J. F. , Electronic detection of the enzymatic degradation of starch, Org Lett, 2004, 6 (13), 2089-92.
N.P.Armitage, J-C P Gabriel and G. Gruner, Langmuir-Blodgett nanotube films , J. Appl. Phys. Lett, 2004, 95 (3228).
Alexander Star, Jean-Christophe P. Gabriel, Keith Bradley, and George Gruner., "Electronic Detection of specific Protein Binding Using Nanotube FET Devices", Nano Lett, 2003, 3 (4), 459-463.
K. Bradley, J-C P Gabriel and G. Gruner., "Flexible Nanotube Electronics", Nano Lett, 2003, 3 (1353-1355).
Keith Bradley, John Cumings, Alexander Star, Jean-Christophe P. Gabriel, and George Gruner., "Influence of Mobile Ions on Nanotube Based FET Devices", Nano Lett, 2003, 3, 639-641.
Star, A., Han, T.-R., Gabriel, J.-C. P., Bradley, K., Gruner, G., "Interaction of Aromatic Compounds with Carbon Nanotubes: Correlation to the Hammett parameter of the substituent and measured carbon nanotube FET response", Nano Lett, 2003, 3, 1421-1423.
A. Star, K. Bradley, J.-C. P. Gabriel, G. Gruner., "Nano-electronic sensors: Chemical detection using carbon nanotubes", Polymeric Materials: Science & Engineering, 2003, 89, 204.
J. R. Stetter, K. Bradley, J. Cumings, J.-C. P. Gabriel, G. Gruner, A. Star., "Nano-electronic sensors; Practical device designs for sensors", Nanotech, 2003, 3, 313-316.
Star, A., Han, T.-R., Joshi, V., Gruner, G., "Polymer Coatings of Carbon Nanotube Sensors", Polymer Prep, 2003, 44, 201.
Bradley, K., Gabriel, J.-C. P., Star, A., Gruner, G., "Short-Channel Effects in Contact-Passivated Nanotube Chemical Sensors", Appl Phys Lett, 2003, 83 (18), 3821-3.
N.P. Armitage, E. Helgren, G. Gruner., "Taxonomy of Electron Glasses", Concepts in Electron Correlation, Proceedings of the ARW NATO Workshop, 2003 (eds. AC Hewson and V Zlatic), 189-197.
A. Montrichok, G. Gruner, and G. Zocchi., "Trapping intermediates in the melting transition of DNA oligomers", Europhys. Lett, 2003, 62 (452).
Bradley, K. Gabriel, J. C. Briman, M. Star, A. Gruner, G. , Charge transfer from ammonia physisorbed on nanotubes, Phys Rev Lett, 2003, 91 (21), 218301.
Helgren, E. Armitage, N. P. Gruner, G., Electrodynamics of a Coulomb glass in n-type silicon, Phys Rev Lett, 2002, 89 (24), 246601.
Dressel, M. Kasper, N. Petukhov, K. Gorshunov, B. Gruner, G. Huth, M. Adrian, H. , Nature of heavy quasiparticles in magnetically ordered heavy fermions UPd(2)Al(3) and UPt(3), Phys Rev Lett, 2002, 88 (18), 186404.