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Sculpting optical microstructures with slight changes in chemistry
Sculpting optical microstructures slight changes chemistry
2017/4/27
In 2013, materials scientists at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) and the Wyss Institute of Biologically Inspired Engineering grew...
A liquid nitrogen immersion cryostat for optical measurements
liquid nitrogen immersion cryostat optical measurements
2016/5/23
A liquid nitrogen immersion cryostat has been developed for optical measurements. Liquid nitrogen in the sample chamber is kept free of bubbles and schlieren by the use of a cooling jacket of sacrific...
Studies of the Electronic Structure of Metallocene-based Second-order Non-linear Optical Dyes
Electronic Structure Metallocene Second-order Non linear Optical Dyes
2016/5/23
This paper describes a simple orbital picture for understanding the optical transitions and the second-order nonlinear optical response of metallocene-based chromophores of the form metallocene-(pi-br...
Large Molecular Third-Order Optical Nonlinearities in Polarized Carotenoids
Carotenoids Molecular Structure Optics and Photonics Photochemistry Spectrum Analysis
2016/5/23
Garito and co-workers have suggested a mechanism to dramatically increase the second hyperpolarizability, gamma, in linear pi-electron-conjugated molecules. Polarization is introduced that leads to a ...
REGISTRATION OF OPTICAL DATA WITH HIGH-RESOLUTION SAR DATA: A NEW IMAGE REGISTRATION SOLUTION
Image Registration Multisensor Optical Data SAR TerraSAR-X Pléiades-1a, Automation HyPARE Algorithm
2014/4/24
Accurate image-to-image registration is critical for many image processing workflows, including georeferencing, change detection, data fusion, image mosaicking, DEM extraction and 3D modeling. Users n...
Theory of polarizable liquid crystals: Optical birefringence
polarizable liquid crystals Optical birefringence
2014/9/24
The theory of polarizable anisotropic fluids is developed on the basis of a model fluid consisting of anisotropic Drude oscillators with embedded permanent dipoles. A matrix theory is developed. The d...
Optical properties of canopies of the tropical seagrass Thalassia testudinum estimated by a three-dimensional radiative transfer model
Optical properties of canopies tropical seagrass Thalassia testudinum three-dimensional radiative transfer model
2014/4/17
Three-dimensional models of seagrass canopies were constructed by treating leaves as flexible strips that fall under their own weight into naturalistic canopy structures. Canopy structures incorporate...
Electrochemical and optical properties of an azo dye based conducting copolymer
Conducting polymers copolymers dithienylpyrrole azobenzene EDOT
2010/4/8
The electrochemical and optical properties of a novel conducting copolymer called poly(2,5'-dimethyl-[4-(2,5-di-thiophen- 2-yl-pyrrol-1-yl)-phenyl]azobenzene-co-(3,4-ethylenedioxythiophene)) (poly(1-c...
Alpine lake optical properties as sentinels of dust deposition and global change
Alpine lake optical properties sentinels of dust deposition global change
2014/4/17
We characterized dissolved organic matter in La Caldera, an alpine lake in Sierra Nevada (Spain), and watersoluble organic compounds (WSOC) in dry and wet deposition originating from Saharan and marin...
Submesoscale physical-biogeochemical coupling across the Ligurian current (northwestern Mediterranean) using a bio-optical glider
Submesoscale physical-biogeochemical coupling across the Ligurian current (northwestern Mediterranean) using a bio-optical glider
2014/5/16
A bio-optical autonomous underwater gliding vehicle, equipped with a conductivity, temperature, depth (CTD) sensor, an oxygen sensor, backscatter meters, chromophoric dissolved organic matter (CDOM) a...
Growth optical and magnetic properties of Cd1-xFexS films prepared on Al2O3 (0001)
Diluted magnetic semiconductor CdFeS Band gap
2011/12/8
Diluted magnetic semiconductor Cd1−xFexS (0bxb0.4) films were grown by the low-pressure metal organic chemical vapor deposition on c-Al2O3 substrates. All the films were fabricated at 633 K unde...
Fe-doped and (Zn, Fe) co-doped CdS films: Could the Zn doping affect the concentration of Fe2+ and the optical properties?
Cd1xyFexZnyS Absorption edges Band gap energy
2011/12/8
Cd1xFexS and Cd1xyFexZnyS thin films were grown by low-pressure metal organic chemical vapor deposition (LP-MOCVD) on cAl2O3 substrates. The films fabricated at 360 C under an hydrogen pressure o...
Optical Fluoride Sensing with a Bay Region Functionalized Perylenediimide Dye
Chemosensor fluorogenic sensors chromogenic sensors fluoride sensing supramolecular chemistry
2010/4/19
A perylenedimiide (PDI) derivative functionalized at the perylene core (bay region) to carry phenyl boronic acid groups was shown to interact with fluoride with changes in the emission and absorption ...
Quantum coherence in nonlinear optical processes: theory and possible application to control of chemical reaction and quantum computation
Chirping Multi-photon absorption Population inversion Quantum control Decoherence
2014/9/24
Phase dependence in nonlinear optical processes reveals an intriguing interplay between the phase coherence of a short laser pulse and the laser-induced quantum wave-packet dynamics, which cannot be o...