Relevant bibliographies by topics / Partition of local density of optical states

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Partition of local density of optical states'

Author: Grafiati
Published: 6 September 2023

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Journal articles on the topic "Partition of local density of optical states"

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Mignuzzi, Sandro, Stefano Vezzoli, Simon A. R. Horsley, William L. Barnes, Stefan A. Maier, and Riccardo Sapienza. "Nanoscale Design of the Local Density of Optical States." Nano Letters 19, no. 3 (February 21, 2019): 1613–17. http://dx.doi.org/10.1021/acs.nanolett.8b04515.

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Titov, Evgenii. "On the Low-Lying Electronically Excited States of Azobenzene Dimers: Transition Density Matrix Analysis." Molecules 26, no. 14 (July 13, 2021): 4245. http://dx.doi.org/10.3390/molecules26144245.

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Azobenzene-containing molecules may associate with each other in systems such as self-assembled monolayers or micelles. The interaction between azobenzene units leads to a formation of exciton states in these molecular assemblies. Apart from local excitations of monomers, the electronic transitions to the exciton states may involve charge transfer excitations. Here, we perform quantum chemical calculations and apply transition density matrix analysis to quantify local and charge transfer contributions to the lowest electronic transitions in azobenzene dimers of various arrangements. We find that the transitions to the lowest exciton states of the considered dimers are dominated by local excitations, but charge transfer contributions become sizable for some of the lowest ππ* electronic transitions in stacked and slip-stacked dimers at short intermolecular distances. In addition, we assess different ways to partition the transition density matrix between fragments. In particular, we find that the inclusion of the atomic orbital overlap has a pronounced effect on quantifying charge transfer contributions if a large basis set is used.
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Huang, C., A. Bouhelier, G. Colas des Francs, G. Legay, J. C. Weeber, and A. Dereux. "Far-field imaging of the electromagnetic local density of optical states." Optics Letters 33, no. 4 (February 5, 2008): 300. http://dx.doi.org/10.1364/ol.33.000300.

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McPhedran, R. C., N. A. Nicorovici, and L. C. Botten. "Resonant cloaking and local density of states." Metamaterials 4, no. 2-3 (August 2010): 149–52. http://dx.doi.org/10.1016/j.metmat.2010.02.001.

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Alatas, Husin, Tony I. Sumaryada, and Faozan Ahmad. "Characteristics of local density of optical states in a tapered grated waveguide at resonant states." Optik 127, no. 5 (March 2016): 2683–87. http://dx.doi.org/10.1016/j.ijleo.2015.11.202.

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Nalewajski, Roman F. "Continuity Relations, Probability Acceleration Current Sources and Internal Communications in Interacting Fragments." Academic Journal of Chemistry, no. 56 (June 20, 2020): 58–68. http://dx.doi.org/10.32861/ajc.56.58.68.

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Classical issues of local continuities and density partition in molecular quantum mechanics are reexamined. An effective velocity of the probability current is identified as the current-per-particle and its properties are explored. The local probability acceleration and the associated force concept are introduced. They are shown to identically vanish in the stationary electronic states. This acceleration measure also determines the associated productions of physical currents, e.g., the local source of the resultant content of electronic gradient information. The probability partitioning between reactants is revisited and illustrated using the stockholder division rule of Hirshfeld. A simple orbital model is used to describe the polarized (disentangled) and equilibrium (entangled) molecular fragments containing the distinguishable and indistinguishable groups of electrons, respectively, and their mixed quantum character is emphasized. The fragment density matrix is shown to determine the subsystem internal electron communications.
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Nicorovici, N. A. P., R. C. McPhedran, and L. C. Botten. "Relative local density of states for homogeneous lossy materials." Physica B: Condensed Matter 405, no. 14 (July 2010): 2915–19. http://dx.doi.org/10.1016/j.physb.2010.01.003.

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Losev, A., S. J. Vlaev, and T. Mishonov. "Local Density of States for Solids in an Electric Field." physica status solidi (b) 220, no. 1 (July 2000): 747–52. http://dx.doi.org/10.1002/1521-3951(200007)220:1<747::aid-pssb747>3.0.co;2-5.

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Di Stefano, O., N. Fina, S. Savasta, R. Girlanda, and M. Pieruccini. "Calculation of the local optical density of states in absorbing and gain media." Journal of Physics: Condensed Matter 22, no. 31 (July 13, 2010): 315302. http://dx.doi.org/10.1088/0953-8984/22/31/315302.

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Liu, Jing, Xunpeng Jiang, Satoshi Ishii, Vladimir Shalaev, and Joseph Irudayaraj. "Quantifying the local density of optical states of nanorods by fluorescence lifetime imaging." New Journal of Physics 16, no. 6 (June 30, 2014): 063069. http://dx.doi.org/10.1088/1367-2630/16/6/063069.

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Dissertations / Theses on the topic "Partition of local density of optical states"

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Jain, Kritika. "Understanding spontaneous emission in the strong coupling regime of an emitter and absorbing matter." Thesis, 2020. https://etd.iisc.ac.in/handle/2005/5211.

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This thesis proposes a partition of optical states into radiative and non-radiative parts when an emitter is proximal to resonant absorbing nanostructures. The conventional partition is valid only for the weak coupling regime (Purcell regime), and the proposed partition is significant to understand spontaneous emission in the (moderate or) strong coupling regime of an emitter and plasmonic metal nanostructures. It highlights and explains the anomalous large increase in the spontaneous emission of photons from emitters placed near fully absorbing plasmonic nanoparticles (< 10 nm in dimensions) that do not scatter light. Further, this work also explains the origins of the large gains observed in surface-enhanced-Raman-spectroscopy (SERS). In SERS, a rough metal surface (or metal nanopore) effects a near-field enhancement of the incident radiation exciting the proximal molecule by factors up to 10^5. But the radiation emitted from the molecule is predicted to be largely dissipated by the metal, making the observed large gains of emission anomalous in conventional theory. This remarkable divergence of SERS from theoretical predictions has been widening for four decades, during which the reported SERS enhancements have grown from 10^4 to 10^{14}. The first objective of this work was to establish the divergence of multiple independent experimental observations from the theory, using quantitative evaluations of an emitter coupled to metal nanostructures. The second part involved a study of collective spontaneous emission from multiple emitters coupled to metal nanoparticles; the study was possible due to a computational method developed earlier for solving such problems. This established that collective modes of emission from many emitters are not the source of this divergence of theory from the observations. Later, we proposed a theory for a modified partition of optical states into the radiative and non-radiative (absorbing) parts, which is also valid for the strong-coupling regime of an emitter and absorbing matter. Note that the effects of a weak coupling, also known as the Purcell effect, can be recast as the quantum interference of the classical paths of a photon. We invoked the quantum interference of additional paths involved in the strong coupling regime of the emitter and a metal nanostructure. These additional non-classical paths of the photon arise due to the possible re-absorption of the photon by the emitter, from the excited metal nanostructure. This modified partition of optical states was shown to predict the experimental observations well. Finally, the proposed theory was also incorporated into the models of collective emission, and this allowed us to elucidate the coherence of these classical and non-classical paths in bulk materials dispersed with extremely small metal nanoparticles. To conclude this work, we also studied the decoherence of this effect with variations in the number of emitters and metal particles, and the role of finite sizes of emitters on the strengths of coupling and this resulting effect. Our work that further establishes the proposed theory using a first principles microscopic model of non-local interactions will be reported elsewhere.
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Barros, Tomás Périé de. "Time-dependent local density of states as a tool to study optical response." Master's thesis, 2018. http://hdl.handle.net/10316/86256.

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Dissertação de Mestrado em Física apresentada à Faculdade de Ciências e Tecnologia
A fotossíntese é uma das mais importantes reações químicas que existem não sendo no entanto completamente compreendida. Apesar de muitos dos passos deste importante processo serem já conhecidos uma parte não é ainda cem por cento clara: o mecanismo de transferência de energia entre fotorrecetores em, por exemplo, plantas verdes. Assume-se que o mecanismo de Förster é o processo não radiativo de transferência de energia dominante, não sendo no entanto as ferramentas teóricas e experimentais disponíveis suficientes para clarificar esta matéria. A análise da densidade local de estados é uma ferramenta que pode vir a provar-se útil no entendimento do mecanismo de transferência de energia em complexos de captação de luz. Esta tese foca-se na implementação do cálculo da densidade local de estados dependente do tempo em regiões de Bader feita no código Octopus. É feita uma breve descrição do modo de operação do código implementado nas suas duas partes: a divisão de uma molecula em vários átomos de Bader e o cálculo da densidade de estados em cada uma destas regiões. .
Photosynthesis is one the most important reactions that exist. However it is not yet completely understood. Although many steps of this important process are already known, a fundamental piece is still not 100% clear: the energy transfer mechanism between photoreceptors in, e.g., green plants. The Förster mechanism is assumed to be the dominant non-radiative energy transfer process, but the available theoretical and experimental tools are not enough to clarify this matter without doubt. The analysis of the local density of states is one tool that may prove insightful in the study of energy transfer mechanisms in light harvesting complexes. This thesis focuses on the implementation of the calculation of the time dependent density of states in Bader regions in the Octopus code. .
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Book chapters on the topic "Partition of local density of optical states"

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Krishnan, Kannan M. "Transmission and Analytical Electron Microscopy." In Principles of Materials Characterization and Metrology, 552–692. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198830252.003.0009.

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Transmission electron microscopy provides information on all aspects of the microstructure — structural, atomic, chemical, electronic, magnetic, etc. — at the highest spatial resolution in physical and biological materials, with applications ranging from fundamental studies to process metrology in the semiconductor industry. Developments in correcting electron-optical aberrations have improved TEM resolution to sub-Å levels. Coherent Bragg scattering (diffraction), incoherent Rutherford scattering (atomic mass), and interference (phase) are some contrast mechanisms in TEM. For phase contrast, optimum imaging is observed at the Scherzer defocus. Magnetic domains are imaged in Fresnel, Foucault, or differential phase contrast (DPC) modes. Off-axis electron holography measures phase shifts of the electron wave, and is affected by magnetic and electrostatic fields of the specimen. In scanning-transmission (STEM) mode, a focused electron beam is scanned across the specimen to sequentially form an image; a high-angle annular dark field detector gives Z-contrast images with elemental specificity and atomic resolution. Series of (S)TEM images, recorded every one or two degrees about a tilt axis, over as large a tilt-range as possible, are back-projected to reconstruct a 3D tomographic image. Inelastically scattered electrons, collected in the forward direction, form the energy-loss spectrum (EELS), and reveal the unoccupied local density of states, partitioned by site symmetry, nature of the chemical species, and the angular momentum of the final state. Energy-lost electrons are imaged by recording them, pixel-by-pixel, as a sequence of spectra (spectrum imaging), or by choosing electrons that have lost a specific energy (energy-filtered TEM). De-excitation processes (characteristic X-ray emission) are detected by energy dispersive methods, providing compositional microanalysis, including chemical maps. Overall, specimen preparation methods, even with many recent developments, including focused ion beam milling, truly limit applications of TEM.
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Conference papers on the topic "Partition of local density of optical states"

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Barnes, William L., Simon A. R. Horsley, and Willem L. Vos. "3 Ways to View the Local Density of Optical States." In 2021 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). IEEE, 2021. http://dx.doi.org/10.1109/cleo/europe-eqec52157.2021.9542791.

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Liu, Jing, Xunpeng Jiang, Satoshi Ishii, Vladimir Shalaev, and Joseph Irudayaraj. "Quantifying local density of optical states of nanorods by fluorescence lifetime imaging." In SPIE BiOS, edited by Jörg Enderlein, Ingo Gregor, Zygmunt K. Gryczynski, Rainer Erdmann, and Felix Koberling. SPIE, 2014. http://dx.doi.org/10.1117/12.2040210.

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Li, Dongfang, Sinan Karaveli, Sébastien Cueff, Wenhao Li, and Rashid Zia. "Probing Electro-Magnetic Local Density of Optical States with Mixed ED-MD Emitters." In CLEO: QELS_Fundamental Science. Washington, D.C.: OSA, 2019. http://dx.doi.org/10.1364/cleo_qels.2019.fw3c.4.

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Cocina, Ario, Raphael Brechbühler, Maria del Henar Rojo Sanz, Aurelio Rossinelli, and David Norris. "A local-density-of-optical-states approach to excited-state dynamics of colloidal semiconductor nanocrystals." In Internet Conference for Quantum Dots. València: Fundació Scito, 2020. http://dx.doi.org/10.29363/nanoge.icqd.2020.036.

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Kafaie Shirmanesh, Ghazaleh, Ruzan Sokhoyan, Seunghoon Han, and Harry A. Atwater. "Field-effect modulation of the local density of optical states in a reflectarray metasurface (Conference Presentation)." In Active Photonic Materials VIII, edited by Ganapathi S. Subramania and Stavroula Foteinopoulou. SPIE, 2016. http://dx.doi.org/10.1117/12.2238835.

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Johansen, Jeppe, Soren Stobbe, Ivan S. Nikolaev, Toke Lund Hansen, Philip T. Kristensen, Jorn M. Hvam, Willem L. Vos, and Peter Lodahl. "Quantum efficiency of self-assembled quantum dots determined by a modified optical local density of states." In 2007 Quantum Electronics and Laser Science Conference. IEEE, 2007. http://dx.doi.org/10.1109/qels.2007.4431638.

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Alatas, Husin, Tony I. Sumaryada, and Faozan Ahmad. "Local density of optical states of an asymmetric waveguide grating at photonic band gap resonant wavelength." In International Seminar on Photonics, Optics, and Applications 2014, edited by Aulia Nasution. SPIE, 2015. http://dx.doi.org/10.1117/12.2074195.

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Sharma, Sachin, and Rajesh V. Nair. "Modulation of charge state dynamics of nitrogen vacancy centers induced by the local density of optical states." In Quantum Nanophotonic Materials, Devices, and Systems 2020, edited by Mario Agio, Cesare Soci, and Matthew T. Sheldon. SPIE, 2020. http://dx.doi.org/10.1117/12.2567509.

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Lodahl, Peter, Jeppe Johansen, Brian Julsgaard, and Jorn M. Hvam. "Dark-bright exciton spin-flip rates of quantum dots determined by a modified local density of optical states." In 11th European Quantum Electronics Conference (CLEO/EQEC). IEEE, 2009. http://dx.doi.org/10.1109/cleoe-eqec.2009.5192256.

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Myers, Sam, David Fussell, Judith Dawes, Martijn de Sterke, Ross McPhedran, Eric Magi, and Benjamin Eggleton. "Enhancement of emission due to local density of states (LDOS) effects in 2-D photonic crystal tapered optical fibre." In 2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference. IEEE, 2006. http://dx.doi.org/10.1109/cleo.2006.4628637.

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