研究领域

Analytical Chemistry

Dr. Chumanov's research consists of three parts: preparation and modification of different nanoparticles, including one-, two- and three-dimensional regular structures; investigation of their properties using different spectrochemical techniques together with optical, electron, atomic force and scanning tunneling microscopy; and development of new materials and devices for environmental and biomedical diagnostic applications. The focus is on the preparation, investigation and applications of materials reduced to nanosize (10-7­10-8 meters) dimensions. Such nanomaterials exhibit remarkable chemical and physical properties, many of which have yet to be unveiled. The potential for discovering new principles, ideas and devices of significant practical value drives research in this field. Dr. Chumanov's focus is on metal, metal/semiconductor and metal/dielectric hybrid nanoparticles, which exhibit unique optical properties due to the excitation of so-called plasmon resonances (plasmons). Plasmons can be effectively tuned by changing the size, shape, composition and local environment of nanoparticles. These characteristics make nanoparticles ideal building blocks for the next generation of optical materials, electronic and photonic devices.

近期论文

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Heckel, J. C.; Chumanov, G., Depolarized Light Scattering From Single Silver Nanoparticles. Journal of Physical Chemistry C 2011, 115 (15), 7261-7269. Iyer, K. S.; Zdyrko, B.; Malynych, S.; Chumanov, G.; Luzinov, I., Reversible submergence of nanoparticles into ultrathin block copolymer films. Soft Matter 2011, 7 (6), 2538-2542. Castro, J.; Pregibon, T.; Chumanov, K.; Marcus, R. K., Determination of catechins and caffeine in proposed green tea standard reference materials by liquid chromatography-particle beam/electron ionization mass spectrometry (LC-PB/EIMS). Talanta 2010, 82 (5), 1687-1695. Kinnan, M. K.; Chumanov, G., Plasmon Coupling in Two-Dimensional Arrays of Silver Nanoparticles: II. Effect of the Particle Size and Interparticle Distance. Journal of Physical Chemistry C 2010, 114 (16), 7496-7501. Malynych, S. Z.; Tokarev, A.; Hudson, S.; Chumanov, G.; Ballato, J.; Kornev, K. G., Magneto-controlled illumination with opto-fluidics. Journal of Magnetism and Magnetic Materials 2010, 322 (14), 1894-1897. Heckel, J. C.; Kisley, L. M.; Mannion, J. M.; Chumanov, G., Synthesis and Self-Assembly of Polymer and Polymer-Coated Ag Nanoparticles by the Reprecipitation of Binary Mixtures of Polymers. Langmuir 2009, 25 (17), 9671-9676. Henson, J.; Heckel, J. C.; Dimakis, E.; Abell, J.; Bhattacharyya, A.; Chumanov, G.; Moustakas, T. D.; Paiella, R., Plasmon enhanced light emission from InGaN quantum wells via coupling to chemically synthesized silver nanoparticles. Applied Physics Letters 2009, 95 (15). Hudson, S. D.; Chumanov, G., Bioanalytical applications of SERS (surface-enhanced Raman spectroscopy). Analytical and Bioanalytical Chemistry 2009, 394 (3), 679-686. Kinnan, M. K.; Kachan, S.; Simmons, C. K.; Chumanov, G., Plasmon Coupling in Two-Dimensional Arrays of Silver Nanoparticles: I. Effect of the Dielectric Medium. Journal of Physical Chemistry C 2009, 113 (17), 7079-7084. Kumbhar, A. S.; Chumanov, G., Encapsulation of Silver Nanoparticles into Polystyrene Microspheres. Chemistry of Materials 2009, 21 (13), 2835-2839. Heckel, J. C.; Farhan, F. F.; Chumanov, G., The effect of fructose derived carbon shells on the plasmon resonance and stability of silver nanoparticles. Colloid and Polymer Science 2008, 286 (13), 1545-1552. Hudson, S. D.; Chumanov, G., Surface Enhanced Raman Scattering and Resonance Elastic Scattering from Capped Single Ag Nanoparticles. Journal of Physical Chemistry C 2008, 112 (50), 19866-19871. Kinnan, M. K.; Kumbhar, A.; Chumanov, G., Plasma reduction of silver compounds for fabrication of surface-enhanced Raman scattering substrates. Applied Spectroscopy 2008, 62 (7), 721-726. Malynych, S.; Chumanov, G., Narrow plasmon mode in 2D arrays of silver nanoparticles self-assembled on thin silver films. Journal of Microscopy-Oxford 2008, 229 (3), 567-574. Ramaratnam, K.; Iyer, S. K.; Kinnan, M. K.; Chumanov, G.; Brown, P. J.; Luzinov, I., Ultrahydrophobic Textiles Using Nanoparticles: Lotus Approach. Journal of Engineered Fibers and Fabrics 2008, 3 (4), 1-14. Zdyrko, B.; Hoy, O.; Kinnan, M. K.; Chumanov, G.; Luzinov, I., Nano-patterning with polymer brushes via solvent-assisted polymer grafting. Soft Matter 2008, 4 (11), 2213-2219. Zdyrko, B.; Kinnan, M. K.; Chumanov, G.; Luzinov, I., Fabrication of optically active flexible polymer films with embedded chain-like arrays of silver nanoparticles. Chemical Communications 2008, (11), 1284-1286. Chumanov, G., Picorel, R., Ortiz de Zarate, I., Seibert, M. and Cotton, T.M., "Resonance Raman and Surface-enhanced Resonance Raman Spectra of LHII Antenna Complex from Rhodobactor sphaeroides and Ectothiorhodospira sp. excited in the Qx and Qy Transitions,” Photochem. Photobiol., 71, 589-595 (2000).