Results 51 to 60 of about 6,678,115 (243)

Determination of the Absolute Configurations of Chiral Drugs Using Chiroptical Spectroscopy

Molecules, 2016
Chiroptical spectroscopy has emerged as a promising tool for the determination of absolute configurations and predominant conformations of chiral molecules in academic laboratories.
Prasad L. Polavarapu
doaj   +1 more source

Resonantly enhanced Faraday rotation in a microcoil current sensor

, 2012
A proof-of-principle experimental demonstration with theoretical modeling is presented for resonantly enhanced Faraday rotation in a microcoil current sensor.
Ismaeel, R., Newson, T.P., Newson, T., Chen, G., Lee, T., Brambilla, G., Chen, G.Y.   +6 more
core   +1 more source

Bioactive Metabolites from Mangrove Endophytic Fungus Aspergillus sp. 16-5B

Marine Drugs, 2015
Chemical investigation of the endophytic fungus Aspergillus sp. 16-5B cultured on Czapek’s medium led to the isolation of four new metabolites, aspergifuranone (1), isocoumarin derivatives (±) 2 and (±) 3, and (R)-3-demethylpurpurester A (4), together ...
Yayue Liu, Senhua Chen, Zhaoming Liu, Yongjun Lu, Guoping Xia, Hongju Liu, Lei He, Zhigang She   +7 more
doaj   +1 more source

Giant optical rotation in a three-dimensional semiconductor chiral photonic crystal. [PDF]

Optics Express, 2013
Optical rotation is experimentally demonstrated in a semiconductor-based three-dimensional chiral photonic crystal (PhC) at a telecommunication wavelength.
Satoru Takahashi, A. Tandaechanurat, R. Igusa, Y. Ota, J. Tatebayashi, Satoshi Iwamoto, Y. Arakawa   +6 more
semanticscholar   +1 more source

Rotational spectroscopy with an optical centrifuge [PDF]

Physical Chemistry Chemical Physics, 2014
We demonstrate a new spectroscopic method for studying electronic transitions in molecules with extremely broad range of angular momentum. We employ an optical centrifuge to create narrow rotational wave packets in the ground electronic state of $^{16}$O$_2$.
Korobenko, Aleksey, Milner, Alexander A., Hepburn, John W., Milner, Valery   +3 more
openaire   +3 more sources

Ultrafast all-optical modulation in silicon optical fibers [PDF]

, 2011
Degenerate and non-degenerate two-photon absorption based modulation is demonstrated in a hydrogenated amorphous silicon core optical fiber.
Day, T.D., Peacock, A.C., Healy, Noel, J. V. Badding, Sazio, P.J.A., P. J. A. Sazio, N. Healy, Sparks, J.R., A. C. Peacock, J. R. Sparks, Mehta, P., Badding, J.V., P. Mehta, T. D. Day   +13 more
core   +1 more source

Protein Polarimetry, Perfected: Specific Rotation Measurement for the Refracto-Polarimetric Detection of Cryptic Protein Denaturation

Biophysica
Protein polarimetry has been evaluated as a simple and straightforward technique to detect the cryptic denaturation of exemplary proteins. The general rules of rotation vs.
Lisa Riedlsperger, Heinz Anderle, Andreas Schwaighofer, Martin Lemmerer   +3 more
doaj   +1 more source

Synthesis and Conformation of Substituted Chiral Binaphthyl-Azobenzene Cyclic Dyads with Chiroptical Switching Capabilities

Molecules, 2011
Optically active binaphthyl-azobenezene cyclic dyads were synthesized to develop a photochromic switching molecule. Azobenezene moieties were cis-trans isomerized by photoirradiation.
Masuki Kawamoto, Kazuto Takaishi
doaj   +1 more source

Square pulse emission with ultra-low repetition rate utilising non-linear polarisation rotation technique

The Journal of Engineering, 2014
The generation of nanosecond square pulse and microsecond harmonic pulse in a passively mode-locked fibre ring laser is demonstrated by inserting a 20 km long single mode fibre in the cavity. The laser operates in anomalous region based on the non-linear
Sin Jin Tan, Zian Cheak Tiu, Sulaiman Wadi Harun, Harith Ahmad   +3 more
doaj   +1 more source

Studies of novel beam shapes and applications to optical manipulation [PDF]

, 2011
Electronic redacted version excludes material for which permission has not been granted by the rights holderIn this thesis an investigation into novel beams and optical manipulation is presented.
Morris, Jill E.
core   +2 more sources