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5 results on '"Sumeet Mahajan"'

1. Tracking molecular binding to nanostructures using CO2 snow jet on plasmonic SERS substrates

Author

Sumeet Mahajan, Jeremy J. Baumberg, and James T. Hugall

Subjects
Jet (fluid), animal structures, Nanostructure, Materials science, Silicon, Molecular binding, Physics::Optics, chemistry.chemical_element, Nanotechnology, Tracking (particle physics), Snow, Physics::Geophysics, chemistry, Molecule, Astrophysics::Earth and Planetary Astrophysics, Physics::Chemical Physics, human activities, Plasmon
Abstract

Carbon dioxide snow jets are used to eject and rearrange molecules attached to nanostructured plasmonic surfaces. Tracking the dynamics of such perturbations provides strong insight into the origin of different contributions to SERS.

Published
2011

2. Temperature dependence of surface-enhanced Raman scattering on nanostructured plasmonic surfaces

Author

James T. Hugall, Jeremy J. Baumberg, and Sumeet Mahajan

Subjects
Nanostructure, Materials science, business.industry, Surface plasmon, technology, industry, and agriculture, Nanophotonics, Physics::Optics, Resonance, Atmospheric temperature range, Condensed Matter::Mesoscopic Systems and Quantum Hall Effect, Condensed Matter::Materials Science, symbols.namesake, Quantum dot, Physics::Atomic and Molecular Clusters, symbols, Optoelectronics, sense organs, Physics::Chemical Physics, business, Raman scattering, Plasmon
Abstract

SERS of sub-monolayers of benzenethiol and quantum dots are studied over a wide temperature range on plasmonic nanostructures. Unusual changes are observed in the background shape and intensity as well as the vibrational signals.

Published
2011

3. Nanovoid Plasmonic-Enhanced Low-Cost Photovoltaics

Author

B.F. Soares, Jeremy J. Baumberg, Sumeet Mahajan, Niraj N. Lal, J. K. Sinha, Philip N. Bartlett, and Fumin Huang

Subjects
Amorphous silicon, Photocurrent, Materials science, Organic solar cell, business.industry, Photovoltaic system, Surface plasmon, technology, industry, and agriculture, Physics::Optics, chemistry.chemical_compound, chemistry, Photovoltaics, Physics::Atomic and Molecular Clusters, Optoelectronics, Plasmonic solar cell, Absorption (electromagnetic radiation), business, Plasmon
Abstract

Gold and silver nanovoid structures generate localised plasmon modes which are harnessed to enhance organic and amorphous silicon solar cell performance. Higher absorption at plasmonic resonant wavelengths indicates significant potential for enhanced photocurrent and efficiency.

Published
2010

4. Surface-Enhanced Raman Scattering of Semiconducting Quantum Dots on Nanostructured Plasmonic Surfaces

Author

Jeremy J. Baumberg, James T. Hugall, and Sumeet Mahajan

Subjects
Materials science, business.industry, Phonon, Surface plasmon, Nanophotonics, Physics::Optics, Condensed Matter::Mesoscopic Systems and Quantum Hall Effect, Condensed Matter::Materials Science, symbols.namesake, Quantum dot, symbols, Optoelectronics, Surface plasmon resonance, business, Raman spectroscopy, Plasmon, Raman scattering
Abstract

Nanostructured gold surfaces with localised surface plasmon resonances are shown to produce surface-enhanced Raman scattering (SERS) of sub-monolayers of semiconducting quantum dots. These results pave the way for quantum dots use as markers.

Published
2010

5. Active Plasmon Tuning of Metal-Elastomer Nanostructures

Author

Robin M. Cole, Sumeet Mahajan, Jeremy J. Baumberg, and Fumin Huang

Subjects
Nanostructure, Materials science, business.industry, Surface plasmon, Physics::Optics, Resonance, Elastomer, Condensed Matter::Materials Science, symbols.namesake, symbols, Optoelectronics, business, Raman spectroscopy, Computer Science::Databases, Electron-beam lithography, Plasmon, Localized surface plasmon
Abstract

Surface plasmon metal-elastomer nanostructures are actively tuned by stretching mechanically-tuneable elastomeric films. Tuneable plasmonic resonances and unusual inter-particle coupling are experimentally demonstrated. Such structures are highly suitable for developing optimal Raman and fluorescence sensors.

Published
2010

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