We investigated visible and UV light response of OTFTs based on the solution processable poly(3-hexylthiophene) (P3HT) semiconducting polymer. The transistors show a photoresponse in channel current under white and UV light illumination. Stabilization time after illumination and recovery time after turning off the light sources are also studied. A transport analysis based on a modified drift-di...

The single photon response (SPR) in vertebrate phototransduction is regulated by the dynamics of R* during its lifetime, including the random number of phosphorylations, the catalytic activity and the random sojourn time at each phosphorylation level. Because of this randomness the electrical responses are expected to be inherently variable. However the SPR is highly reproducible. The mechanism...

OBJECTIVE To test the hypothesis that carriers of Bardet-Biedl syndrome have abnormal rod-mediated responses. METHODS Parents (n = 26) of children with Bardet-Biedl syndrome (BBS), who are obligate carriers of BBS, consented to scotopic, full-field electroretinography (ERG). Responses were recorded over a 4 to 5 log unit range, up to a maximum stimulus of approximately +3.6 log scotopic trola...

We studied far-infrared ~FIR! response due to cyclotron resonance ~CR! of two-dimensional electron gas systems in GaAs/AlGaAs heterostructures by using cyclotron radiation from n-InSb devices as the illumination source. We examined the dependence of the FIR response on different experimental parameters, including the aspect ratio of Hall bars, electron mobility, bias current, illumination inten...

We report on the study of phonon properties and electron-phonon coupling in thin NbTiN films, which are intensively exploited superconducting devices. Studied films with thicknesses less than 10~nm disordered respect to electron transport, Ioffe-Regel parameter $k_F l_e = 2.5-3.0$ ($k_F$ is Fermi wave vector $l_e$ mean free path), inelastic interaction, product $q_T \ll 1$ ($q_T$ a thermal phon...