Results 141 to 150 of about 33,488 (251)

Controllable growth of two‐dimensional molecular crystals for high‐performance hybrid heterostructure imaging device

open access: yesInfoMat, EarlyView.
Layer‐controlled two‐dimensional perylene‐derivative molecular crystals grow by van der Waals vapor‐phase epitaxy and show near‐unity photoluminescence quantum yields. In hybrid structures with TMDCs, the carrier relaxation can be tuned from charge transfer to Förster resonance energy transfer.
Huijuan Zhao   +12 more
wiley   +1 more source

Change in Vocal Resonance Following Sinonasal Surgery. [PDF]

open access: yesWorld J Otorhinolaryngol Head Neck Surg
ABSTRACT Objectives Delineate objective and clinician‐perceived subjective changes in voice quality following sinonasal surgery. Methods Prospective cohort study of six adults who completed pre‐ and post‐operative voice recordings which were analyzed for jitter, shimmer, noise to harmonic ratio (NHR), cepstral peak prominence (CPP), formant and anti ...
Fox MG   +5 more
europepmc   +2 more sources

Common‐Mode Rejection Shifted‐Excitation Raman Difference Spectroscopy (CMR‐SERDS) Preserves Broad Structure Predictive of Soil Organic Carbon

open access: yesJournal of Raman Spectroscopy, EarlyView.
Common‐mode rejection (CMR) is introduced as a physics‐motivated preprocessing method for shifted excitation Raman difference spectroscopy (SERDS) that removes the shared background of paired measurements while preserving the noncommon excitation‐dependent component. Applied to more than 900 North American soil samples, CMR improves soil organic carbon
Mahsa Zarei   +4 more
wiley   +1 more source

Pitch Strength & Percent Vocal Creak to Assess Treatment Response in Adductor Laryngeal Dystonia

open access: yesThe Laryngoscope, EarlyView.
Pitch Strength (PS) and Percent Vocal Creak (%VC) were measured before and after botulinum neurotoxin treatment in patients with adductor laryngeal dystonia (AdLD). While PS and %VC correlated with changes in disruption frequency and perceptual severity, they did not demonstrate robust group‐level treatment sensitivity.
Jesse D. Hoffmeister   +5 more
wiley   +1 more source

USAGE OF COMPUTERISED MEANS IN VOCAL ASSESSMENT

open access: yesStudia Universitatis Babeş-Bolyai. Musica, 2012
This study investigates implementation of new technologies in vocal assessment pertaining to university degree artistic education. One of our objectives represents the collection of information regarding changes occurring in singing voice as a result of
Ana RUSU
doaj  

Visible Octave Frequency Combs in Silicon Nitride Nanophotonic Waveguides Driven by Ti:Sapphire Lasers

open access: yesLaser &Photonics Reviews, EarlyView.
Chip‐based frequency combs are usually pumped from telecom wavelengths, far from the visible. This work instead pumps close to the visible with a Ti:sapphire laser ‐ the source behind the original optical frequency combs and now becoming chip‐integrable‐ and lets silicon‐nitride waveguides convert it into efficient, octave‐spanning visible‐to‐infrared ...
Abdullah Alabbadi   +5 more
wiley   +1 more source

Rotational Anisotropy Raman Spectrometer for High‐Sensitivity Crystallographic Symmetry Analysis

open access: yesLaser &Photonics Reviews, EarlyView.
We introduce rotational‐anisotropy Raman spectroscopy, an enhanced scheme that overcomes the limitations of traditional polarization‐resolved Raman techniques. This method reveals previously inaccessible phonon symmetries and resolves directional anisotropy of phonon‐polaritons in benchmark crystals, establishing a powerful new tool for characterizing ...
Di Cheng   +4 more
wiley   +1 more source

Side‐DBR Guided Exciton‐Polariton Lasing With Near‐Field Mode Imaging in an InGaN Thin‐Film Ridge Waveguide

open access: yesLaser &Photonics Reviews, EarlyView.
Room‐temperature lower‐polariton‐like lasing is realized in an InGaN/GaN thin‐film ridge cavity with lateral distributed Bragg reflectors. Near‐field optical microscopy distinguishes the transverse side‐DBR‐confined mode from a longitudinal photon‐like mode, while simulations reproduce their spatial profiles.
Wai Yuen Fu   +2 more
wiley   +1 more source

A Practical Guide to Spectrogram Analysis for Audio Signal Processing [PDF]

open access: yes
The paper summarizes spectrogram and gives practical application of spectrogram in signal processing. For analysis, finger-snapping is recorded with a sampling rate of 441000 Hz and 96000 Hz.
Khodzhaev, Zulfidin
core   +1 more source

Plasmon–Exciton Coupling Enhances Second‐Order Nonlinear Response in Borophene–ZnO Hybrid Structures

open access: yesLaser &Photonics Reviews, EarlyView.
Nonlinear interactions between plasmons in borophene and excitons in ZnO lead to enhanced nonlinear and incoherent cathodoluminescence, as well as coherent second harmonic generation, under electron‐beam and laser irradiations, respectively. The anisotropic response of borophene, revealed as in‐plane hyperbolic polariton propagation, acts as a control ...
Maximilian Black   +9 more
wiley   +1 more source

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