Results 91 to 100 of about 1,297,695 (275)
Advanced Materials, EarlyView.Chalcogen substitution emerges as a powerful strategy for designing high‐performance OMIECs. In aliphatic–glycol side chain diketopyrrolopyrrole polymers, biselenophene incorporation promotes a planar, polarizable, and doping‐tolerant quinoidal framework, enabling PDPP‐4EG‐Se2 to combine high hole mobility, large µC*, enhanced operational stability ...
Shinbee Oh +9 more
wiley +1 more source
Coherent anti-Stokes Raman spectroscopy of single and multi-layer graphene
Nature Communications, 2019 Coherent anti-Stokes Raman Scattering (CARS) accesses the vibrational properties of a material via nonlinear four-wave mixing (FWM); CARS in graphene has not been observed to date despite its high nonlinear third-order susceptibility.
A. Virga +7 more
doaj +1 more source
Waveguide-based optical parametric oscillator for coherent anti-Stokes Raman scattering [PDF]
EPJ Web of ConferencesA Si3N4 waveguide-based optical parametric oscillator is presented that generates narrowband output pulses down to 1.44 nm and with up to 211 pJ pulse energy, allowing coherent Raman scattering spectroscopy and microscopy with sufficient spectral ...
Gao Ming +2 more
doaj +1 more source
Laser‐Induced Local De‐Doping in Organic Semiconductors
Advanced Materials Technologies, EarlyView.The polymer PBTTT‐C14 doped with the small molecule acceptor F4TCNQ is considered as a benchmark material system. Mask‐free, microscale patterning of the doping level via laser‐induced heating and sublimation of dopant molecules is shown. Controlling laser irradiance and swath spacing allows dopant level control with laser‐limited resolution, opening ...
Christian Rainer +5 more
wiley +1 more source
Advanced techniques in Raman tweezers microspectroscopy for applications in biomedicine [PDF]
, 2008 This thesis investigates the use of Raman tweezers microspectroscopy to interrogate the biochemistry of single biological cells. Raman tweezers microspectroscopy is a powerful technique, which combines traditional Raman microspectroscopy and optical ...
Jess, Phillip R.T.
core +2 more sources
AIP Advances, 2016 We show resolution of fine spectral features within several Raman active vibrational modes in potassium titanyl phosphate (KTP) crystal. Measurements are performed using a femtosecond time-domain coherent anti-Stokes Raman scattering spectroscopy ...
A. Card, M. Mokim, F. Ganikhanov
doaj +1 more source
Integrated waveguide and nanostructured sensor platform for surface-enhanced Raman spectroscopy
, 2014 Limitations of current sensors include large dimensions, sometimes limited sensitivity and inherent single-parameter measurement capability. Surface-enhanced Raman spectroscopy can be utilized for environment and pharmaceutical applications with the ...
Pollard, M. +5 more
core +1 more source
Advanced Optical Materials, EarlyView.Here we use a template‐assisted self‐assembly approach of metal colloids onto metal films to produce hybrid plasmonic metasurfaces that integrate nanoparticle‐on‐mirror cavities with periodic metal colloid arrays. The resulting coupling between gap plasmons and grating‐coupled surface plasmon polaritons enables programmable hybrid modes with tailored ...
Afroditi Koutsogianni +6 more
wiley +1 more source
Advanced Science, EarlyView.Fluorescent BODIPY‐conjugated thiosemicarbazone ligands and their Ga(III), In(III), and Fe(III) complexes, inspired by Triapine, are developed as theranostic agents. Multiphoton FLIM and confocal microscopy in cancer cells and zebrafish reveal real‐time uptake, mitochondrial localisation, and whilst spectroscopic assays indicated preserved complex ...
Megan J. Green +15 more
wiley +1 more source
Phase-sensitive detection in Raman Tweezers: biological applications [PDF]
, 2008 In the biomedicine field, scientists act as detectives working hard to unravel the mysteries surrounding cells. To this end, Raman spectroscopy has revealed itself particularly useful, providing information concerning both the chemical composition and ...
De Luca, Anna Chiara
core +1 more source