Results 71 to 80 of about 545,254 (302)

Scattering of light in photonic crystals [PDF]

SPIE Proceedings, 2002
A new method is developed to calculate the scattering of light at the surface of a photonic crystal. The problem is solved in terms of virtual surface-current distributions and the calculation takes full advantage of the infinite-space plane-wave expansion method for obtaining the photonic band structure.
Hoenders, BJ, Doosje, M, Knoester, J
openaire   +3 more sources

Computational studies of one and two-dimensional photonic microstructures [PDF]

, 2006
This work is concerned with the study of photonic crystals and other topical photonic microstructures, whose optical properties are investigated by solving the Maxwell equations using appropriate theoretical and computational schemes, which are described.
Beggs, Daryl M., Beggs, Daryl M
core  

Understanding the rich physics of light propagation in slow photonic crystal waveguides [PDF]

, 2010
Selected papers. Held as part of SPIE Photonics West 2010.We study propagation losses in slow light photonic crystal waveguides and show that dispersion engineering can reduce the loss.
Lalanne, Phillippe, De La Rue, Richard, Beggs, Daryl M., M. Sorel, MELLONI, ANDREA IVANO, Thomas F. Krauss, Francesco Morichetti, Schulz, Sebastian, Beggs, Daryl Matthew, Sebastian Schulz, Marc Sorel, Samarelli, Antonio, Liam O'Faolain, Krauss, Thomas F., Daryl M. Beggs, Sorel, Marc, Simon Mazoyer, L. O'Faolain, Morichetti, Francesco, D. M. Beggs, S. Schulz, Canciamilla, Antonio, A. Samarelli, TORREGIANI, MATTEO ALDO, O'Faolain, Liam, Antonio Samarelli, Andrea Melloni, Torregiani, M., Richard De La Rue, Phillippe Lalanne, Melloni, Andrea, Antonio Canciamilla, T. F. Krauss, Mazoyer, Simon, R. De La Rue, M. Torregiani, Schulz, Sebastian; id_orcid   +36 more
core   +1 more source

Defect‐Mediated Inelastic Light Scattering by Infrared Phonons in Hexagonal Boron Nitride

Advanced Functional Materials, EarlyView.
Optically active defects in hexagonal boron nitride enable inelastic stimulated light scattering mediated by infrared‐active phonons, relaxing conventional Raman selection rules. Defect engineering enhances the Stokes‐conversion process and activates both TO‐ and LO‐phonon scattering channels.
Prabhdeep Singh, Bharti Garg, Maximilian Black, Masoud Taleb, Nahid Talebi   +4 more
wiley   +1 more source

Preparation Techniques, Design Strategies of Responsive Photonic Crystals and Their Typical Applications in the Field of Sensing

Crystals
Responsive photonic crystals, as a class of intelligent photonic materials that can generate optical signals in response to external stimuli including temperature, pH, humidity, electric fields, magnetic fields, and specific molecules, exhibit great ...
Rongrong Ye, Rong Yang, Lina Hu, Zan Li, Ziping Luo, Xiaoyi Chen   +5 more
doaj   +1 more source

FEM modeling of 3D photonic crystals and photonic crystal waveguides [PDF]

SPIE Proceedings, 2005
We present a finite-element simulation tool for calculating light fields in 3D nano-optical devices. This allows to solve challenging problems on a standard personal computer. We present solutions to eigenvalue problems, like Bloch-type eigenvalues in photonic crystals and photonic crystal waveguides, and to scattering problems, like the transmission ...
Burger, S., Klose, R., Schaedle, A., Schmidt, F., Zschiedrich, L.   +4 more
openaire   +2 more sources

Enhanced light extraction by photonic quasi-crystals in GaN blue LEDs [PDF]

, 2009
The far-field profile of photonic quasi-crystal patterned and unpatterned LEDs, fabricated from commercial epitaxial substrates by electron beam lithography, has been measured prior to lapping and dicing. Emission enhancements reach a maximum of 62%, and
Shields, Philip A., Lee, Tom, Allsopp, Duncan W. E., Charlton, Martin D. B., Allsopp, Duncan, Wang, Wang Nang, Charlton, Martin, Zoorob, Majd, Zoorob, Majd E., Shields, Philip A.; id_orcid   +9 more
core   +1 more source

Intracrystalline Void‐Mediated Toughening of Brittle Crystals in Quail Eggshells

Advanced Functional Materials, EarlyView.
In quail eggshells, the high density and disordered arrangement of intracrystalline voids inhibit lattice cleavage, suppress long‐range crack propagation, and promote deformation twinning and quasi‐plasticity, serving as an essential toughening motif. We show that these voids remain within a narrow subcritical size range and therefore predominantly do ...
Jingxiao Zhong, Qihang Wang, Andre E. Vellwock, Sinuhe Perea Puente, Tingting Zhu, Jia Hui Lim, Kadda Medjoubi, Sebastian Hoerl, Erika Griesshaber, Wolfgang W. Schmahl, Yannicke Dauphin, Emeline Raguin, Peter Werner, Francesco Stellacci, Michael V. Swain, Peter Fratzl, Shahrouz Amini   +16 more
wiley   +1 more source

Nitrospinics: Nitride Materials for Spin‐Orbit and Orbital Torques From Memory to Artificial Intelligence

Advanced Functional Materials, EarlyView.
Further advances in applications can be anticipated through the development of unique and functional materials beyond conventional alloys. Nitrogen enables tailor‐made orbital textures in various transition‐metal hosts, paving the way for devices ranging from spintronics memory to artificial intelligence hardware.
Prabhat Kumar, Gaurav Kumar Shukla, Yoshio Miura, Shinji Isogami   +3 more
wiley   +1 more source

Algorithms and technologies for photonic crystal modelling

, 2009
In this thesis an investigation into the behaviour of light when passing through photonic crystals was carried out using numerical methods. Photonic crystals are expensive and difficult to fabricate so there is a requirement for computer simulations that
Hart, Elizabeth E, Hart, Elizabeth E.
core   +1 more source