研究领域

Inorganic Chemistry/Materials Chemistry/Physical Chemistry

Our research is in the physical chemistry of materials, interfaces, nanocrystals, and nanotubes, especially in relation to optical and electronic properties. This work can include theoretical modeling, experimental chemical physics, and synthetic chemistry. We try to understand the size evolution of solid-state properties from molecular properties. We also seek to create new materials with nanoscale structure by both kinetic and thermodynamic self-assembly methods. We specialize in Electric Force Microscopy and Laser Optical Microscopy for observation of single nano-objects. In the last several years, we have developed interests in metallic SWNT carbon nanotubes, and in Ag nanocrystals as microscopic antennas for local electromagnetic field enhancement.

近期论文

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Stephane Berciaud, Melinda Han, Kim Fai Mak, Louis Brus, Philip Kim, and Tony Heinz "Electron and optical phonon temperatures in electrically biased graphene" Phys. Rev.Lett. 104, 227401 (2010). V. Blagojevic, J. Carlo, L. Brus, M. Steigerwald, Y. Uemura, S. Billinge, W. Zhou, P. Stepehens, A. Aczel and G. Luke "Magnetic phase transition in V2O3 nanocrystals" Phys. Rev. B 82, 094453/1-094531/6 (2010). S. Ryu, L. Liu, S. Berciaud, Y. Yu, H. Liu, P. Kim, G. Flynn, L. Brus "Atmospheric Oxygen Binding and Hole Doping in Deformed Graphene on a SiO2 Substrate" Nano Letters (2010) 10, 4944-4951. Naeyoung Jung, Andrew C. Crowther, Namdong Kim, Philip Kim, , and Louis Brus "Raman Enhancement on Graphene: Adsorbed and Intercalated Molecular Species" ACS Nano (2010) 4, 7005-7013. Namdong Kim, Kwang Kim, Naeyoung Jung, Louis Brus and Philip Kim "Synthesis and Electrical Characterization of Magnetic Bilayer Graphene Intercalate" Nano Letters (2011) 11, 860-865. C. Liu, Z. Li, Z. Chen, P. Klimov, L. Brus, T. Heniz " Imaging Stacking Order in Few-Layer Graphene" Nano Letters (2011) 11, 164-169 S. Ryu, J. Maulzsch, M. Han, P. Kim, L. Brus "Raman Spectroscopy of Lithographically Patterned Graphene Nanoribbons" ACS Nano (2011) 5, 4123-4130. N. Jung, B. Kim, A. Crowther, N. Kim, C. Nuckolls, L. Brus "Optical Reflectivity and Raman Scattering in Few-Layer-Thick Graphene Highly Doped by K and Rb" Nano Letters (2011) 11, 5708-5716. E. Thrall, A. Crowther, Z. Yu, L. Brus, "R6G on Graphene: High Raman Detection Sensitivity, Yet Decreased Raman Cross-Section ", Nano Letters (2012), 12, 1571- A. Crowther, A. Ghassaei, N. Jung, L. Brus, "Strong Charge-Transfer Doping of 1 to10 Layer Graphene by NO2", ACS Nano (2012), 6, 1865-1875. Y. Yu, M. Han, S. Berciaud, A. Georgescu, T. Heinz, L. Brus, K. Kwang, P. Kim "High-resolution spatial mapping of the temperature distribution of a Joule selfheated graphene nanoribbon" Applied Physics Letters (2011), 99, 183105. L. Wang, Z. Chen, C. Dean, T. Taniguchi, K. Watanabe, L. Brus, J. Hone "Negligible Environmental Sensitivity of Graphene in a Hexagonal Boron Nitride/Graphene/h-BN Sandwich Structure" ACS Nano (2012) 6, 9314-9319. L. Liu, Z. Chen, L. Wang, E. Polyakova, T. Taniguchi, K. Watanabe, J. Hone, G. Flynn, L. Brus "Slow Gold Adatom Diffusion on Graphene: Effect of Silicon Dioxide and Hexagonal Boron Nitride Substrates" J. Phys. Chem. B. (2013), 117, 4305-4312. Xavier Roy, Chul-Ho Lee, Andrew C. Crowther, Christine L. Schenck, Tiglet Besara, Roger A. Lalancette, Theo Siegrist, Peter W. Stephens, Louis E. Brus, Philip Kim, Michael L. Steigerwald, Colin Nuckolls "Nanoscale Atoms in Solid-State Chemistry" Science (2013), 341, 157-160 Stephane Berciaud, Xianglong Li, Han Htoon, Louis Brus, Stephen Doorn, Tony Heinz, "Intrinsic Line Shape of the Raman 2D-Mode in Freestanding Graphene Monolayers" Nano Letters (2013), 13, 3517-3523. Jing Tang, Thomas Hughes, Michael Steigerwald, Louis Brus, Richard Friesner "Realistic Cluster Modeling of Electron Transport and Trapping in Solvated TiO2 Nanoparticles" J. Am. Chem. Soc. (2013), 134, 12028-12042. Elizabeth Thrall, Asher Steinberg, Xiaomu Wu, Louis Brus "The Role of Photon Energy and Semiconductor Substrate in the Plasmon-Mediated Photooxidation of Citrate by Silver Nanoparticles" J. Phys. Chem. C (2013) 117, 26238-26247. Jing Zhang, Michael Steigerwald, Louis Brus, Richard Friesner "Covalent OH bonds as Electron Traps in Proton-rich Rutile TiO2 Nanoparticles" Nano Letters (2014) 14, 1785-1789. Michael Novak, Sumedh Surwade, Jason Prokop, Kirill Bolotin, James Hone, Louis Brus, Colin Nuckolls, Haitao Liu "Visualizing Individual Carbon Nanotubes with Optical Microscopy" J. Am. Chem. Soc. (2014), 136, 8536-8539. Chen, Z.; Darancet, P.; Wang, L.; Crowther, A.; Gao, Y.; Dean, C.; Taniguchi, T.; Watanabe, K.; Hone, J.; Marianetti, C.; Brus, L. "Physical Adsorption and Charge Transfer of Molecular Br2 on Graphene" ACS Nano (2014) 8, 2943-2950. Brus, L. "Size, Dimensionality and Strong Electron Correlation in Nanoscience" Accts. Chem. Res. (2014) ASAP.