Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Venkata Ananth Tamma"'
Active Plasmonics and Active Chiral Plasmonics through Orientation-Dependent Multipolar Interactions
Autor:
Charles Cherqui, Matthew Du, Peter R. Stevenson, Jennifer S. Shumaker-Parry, V. A. Apkarian, Joel Yuen-Zhou, George C. Schatz, Venkata Ananth Tamma, Ilse M. Meiler, Jacob R. Neff, Marc R. Bourgeois, Endora Abreu, Kate Rodriguez
Publikováno v:
ACS nano. 14(9)
While most active plasmonic efforts focus on responsive metamaterials to modulate optical response, we present a simple alternative based on applied orientation control that can likely be implemented for many passive plasmonic materials. Passive plas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1736fae27c8e58ad6598c6607c175ec7
https://pubmed.ncbi.nlm.nih.gov/32790353
https://pubmed.ncbi.nlm.nih.gov/32790353
Publikováno v:
Optics express. 26(24)
We demonstrate the stimulated Raman nanoscopy of a small number of molecules in a plasmonic gap, excited without resonant electronic enhancement, measured using near-field photon-induced forces, eliminating the need for far-field optical detection. W
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::825cac41c7f2552fd9470b48fa6d24e4
https://pubmed.ncbi.nlm.nih.gov/30650729
https://pubmed.ncbi.nlm.nih.gov/30650729
Publikováno v:
IEEE Transactions on Plasma Science, vol 44, iss 4
Othman, MAK; Tamma, VA; & Capolino, F. (2016). Theory and New Amplification Regime in Periodic Multimodal Slow Wave Structures With Degeneracy Interacting With an Electron Beam. IEEE TRANSACTIONS ON PLASMA SCIENCE, 44(4), 594-611. doi: 10.1109/TPS.2016.2538786. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/4cq5v3tr
Othman, MAK; Tamma, VA; & Capolino, F. (2016). Theory and New Amplification Regime in Periodic Multimodal Slow Wave Structures With Degeneracy Interacting With an Electron Beam. IEEE TRANSACTIONS ON PLASMA SCIENCE, 44(4), 594-611. doi: 10.1109/TPS.2016.2538786. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/4cq5v3tr
We present the theory of a new amplification regime in traveling wave tubes (TWTs) composed of a slow wave periodic structure that supports multiple electromagnetic modes that can all be synchronized with the electron beam. The interaction between th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f02ac85c90528621a16cb551f0fd5c89
https://doi.org/10.1109/tps.2016.2538786
https://doi.org/10.1109/tps.2016.2538786
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. :1-14
We explore a novel concept for pulse compression scheme applicable at RF, microwave, and possibly up to optical frequencies based on structured energy distribution in cavities supporting degenerate band-edge (DBE) modes. We show the high spatial conc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6fc8ececa419f438bed59b696c447fe5
https://doi.org/10.1109/tmtt.2016.2518160
https://doi.org/10.1109/tmtt.2016.2518160
Autor:
Fei Huang, H. Kumar Wickramasinghe, Venkata Ananth Tamma, Mohsen Rajaei, Mohammad Ali Almajhadi
We demonstrate the measurement of laterally induced optical forces using an Atomic Force Microscope (AFM). The lateral electric field distribution between a gold coated AFM probe and a nano-aperture in a gold film is mapped by measuring the lateral o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::30320cb1c085cbe50481516f866bf618
http://arxiv.org/abs/1605.03163
http://arxiv.org/abs/1605.03163
Publikováno v:
ACS Nano. 6:2385-2393
We present dynamic tuning and symmetry lowering of Fano resonances in gold heptamers accomplished by applying uniaxial mechanical stress. The flexible heptamer structure was obtained by embedding the seven-gold-nanocylinder complex in a polydimethyls
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::580bac64ba901c9be1be7ac77814d557
https://doi.org/10.1021/nn204647b
https://doi.org/10.1021/nn204647b
Publikováno v:
IEEE Photonics Technology Letters. 26:603-605
We report an air-suspended ultracompact (30 μm× 40 μm) fast transient thermo-optic silicon (Si) 2D photonic crystal (PhC) waveguide (WG) operated at around telecommunication S-band. A line defect triangular lattice PhC WG was fabricated on a silic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd636b6542a128d30f1ce1c71beb40ec
https://doi.org/10.1109/lpt.2014.2301276
https://doi.org/10.1109/lpt.2014.2301276
Publikováno v:
Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena. 28:1222-1230
The application of transformation optical techniques to photonic crystal-like dielectric structures has facilitated the creation of invisibility cloaks that operate at optical wavelengths. In this article, the authors present the fabrication processe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92c6a06df12bccb5aff8317b5bcd4e42
https://doi.org/10.1116/1.3504595
https://doi.org/10.1116/1.3504595
Publikováno v:
IEEE Photonics Journal, Vol 2, Iss 6, Pp 1003-1012 (2010)
We report the microelectromechanical systems (MEMS)-enabled mechanically tunable negative-index photonic crystal lens, which was comprised of 2-D photonic crystal and symmetrical electro-thermal actuators. The 2-D photonic crystal was made of a honey
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f55daa744be084972e1ac0c9e83ffbcf
https://ieeexplore.ieee.org/document/5621879/
https://ieeexplore.ieee.org/document/5621879/
Publikováno v:
Guclu, C; Tamma, VA; Wickramasinghe, HK; & Capolino, F. (2015). Photoinduced magnetic force between nanostructures. Physical Review B-Condensed Matter and Materials Physics, 92(23). doi: 10.1103/PhysRevB.92.235111. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/73k2z54d
Physical Review B, vol 92, iss 23
Physical Review B-Condensed Matter and Materials Physics, vol 92, iss 23
Physical Review B, vol 92, iss 23
Physical Review B-Condensed Matter and Materials Physics, vol 92, iss 23
Photo-induced magnetic force between nanostructures, at optical frequencies, is investigated theoretically. Till now optical magnetic effects are not used in scanning probe microscopy because of the vanishing natural magnetism with increasing frequen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::335cc88bb5455d86e33e6a588388b252
http://www.escholarship.org/uc/item/73k2z54d
http://www.escholarship.org/uc/item/73k2z54d