Results 11 to 20 of about 1,043,173 (301)

General Recipe for Designing Photonic Crystal Cavities [PDF]

, 2005
We describe a general recipe for designing high-quality factor (Q) photonic crystal cavities with small mode volumes. We first derive a simple expression for out-of-plane losses in terms of the k-space distribution of the cavity mode.
Englund, Dirk, Fushman, Ilya, Vuckovic, Jelena   +2 more
core   +1 more source

Low-threshold photonic crystal laser [PDF]

, 2002
We have fabricated photonic crystal nanocavity lasers, based on a high-quality factor design that incorporates fractional edge dislocations. Lasers with InGaAsP quantum well active material emitting at 1550 nm were optically pumped with 10 ns pulses, and
Gogna, Pawan, Lončar, Marko, Qiu, Yueming, Scherer, Axel, Yoshie, Tomoyuki   +4 more
core   +2 more sources

High quality factors and room-temperature lasing in a modified single-defect photonic crystal cavity [PDF]

, 2004
We propose and analyze a new photonic crystal cavity design that supports a dipole mode with a quality factor greater than 20,000. Such a high quality factor is obtained by precise tuning of the cavity length with minimal disruption of the surrounding ...
Hochberg, Michael, Lončar, Marko, Qiu, Yueming, Scherer, Axel   +3 more
core   +1 more source

Prospects of Scintillating Crystal Detector in Low-Energy Low-Background Experiments [PDF]

, 2000
Scintillating crystal detector offers potential advantages in low-energy (keV-MeV range) low-background experiments for particle physics and astrophysics. The merits are discussed using CsI(Tl) crystal as illustrations.
Alarja, Alimonti, Amsler, Armbruster, Bacci, Barabanov, Belli, Bernabei, Bernabei, Bernabeú, Broggini, Burachas, C.C. Chang, C.P. Chen, C.Y. Chang, Chaminade, Charalambus, Cocconi, Danevich, Derbin, Donnelly, Ejiri, Ellis, Ellis, Ellis, Fushimi, Gerbier, Gonzalez-Mestres, Goodman, Grassman, Gratta, H.B. Li, H.T. Wong, Hayakawa, Ishii, J. Li, J.G. Lu, Jagam, Kayser, Kilgus, Kobayashi, Kotthaus, Kozlowski, Kreutz, Kubodera, Lee, Morris, Pecourt, Raghavan, Raghavan, S.C. Wang, Sarsa, Schotanus, Spooner, Storm, Suzuki, Suzuki, Vilain, Vogel, W.P. Lai, Y. Liu, Z.P. Mao, Zucker   +62 more
core   +3 more sources

Green approach to synthesize MnxZn1-xO nanocomposite with enhanced photocatalytic, fluorescence and antibacterial activity

Current Research in Green and Sustainable Chemistry, 2022
Green approach to synthesize MnxZn1-xO [x ​= ​0.05 (MNZ†), 0.1 (MNZ1), 0.2 (MNZ2), 0.3 (MNZ3), and 0.4 (MNZ4)] nanocomposites via co-precipitation method under the controlled condition at pH∼8–9 and its application was found in multidimension like ...
Anik Sinha, Sanjay Kumar Sahu, Suman Biswas, Manab Mandal, Vivekananda Mandal, Tanmay Kumar Ghorai   +5 more
doaj   +1 more source

Smart, programmable and responsive injectable hydrogels for controlled release of cargo osteoporosis drugs

Scientific Reports, 2017
Easy-to-prepare drug delivery systems, based on smart, silica gels have been synthesized, characterized, and studied as hosts in the controlled release of bisphosphonates.
Konstantinos E. Papathanasiou, Petri Turhanen, Stephan I. Brückner, Eike Brunner, Konstantinos D. Demadis   +4 more
doaj   +1 more source

The isocyanide SN2 reaction

Nature Communications, 2023
The SN2 nucleophilic substitution reaction is a vital organic transformation used for drug and natural product synthesis. Nucleophiles like cyanide, oxygen, nitrogen, sulfur, or phosphorous replace halogens or sulfonyl esters, forming new bonds ...
Pravin Patil, Qiang Zheng, Katarzyna Kurpiewska, Alexander Dömling   +3 more
doaj   +1 more source

Four- and five-component molecular solids: crystal engineering strategies based on structural inequivalence

IUCrJ, 2016
A synthetic strategy is described for the co-crystallization of four- and five-component molecular crystals, based on the fact that if any particular chemical constituent of a lower cocrystal is found in two different structural environments, these ...
Niyaz A. Mir, Ritesh Dubey, Gautam R. Desiraju   +2 more
doaj   +1 more source

Binary and ternary cocrystals of sulfa drug acetazolamide with pyridine carboxamides and cyclic amides

IUCrJ, 2016
A novel design strategy for cocrystals of a sulfonamide drug with pyridine carboxamides and cyclic amides is developed based on synthon identification as well as size and shape match of coformers.
Geetha Bolla, Ashwini Nangia
doaj   +1 more source

Quaternary cocrystals: combinatorial synthetic strategies based on long-range synthon Aufbau modules (LSAM)

IUCrJ, 2016
A synthetic strategy is outlined whereby a binary cocrystal may be developed in turn into a ternary and finally into a quaternary cocrystal. The strategy hinges on the concept of the long-range synthon Aufbau module (LSAM) which is a large supramolecular
Ritesh Dubey, Niyaz A. Mir, Gautam R. Desiraju   +2 more
doaj   +1 more source