User profiles for André Knoesen

Andre Knoesen

University of California, Davis
Verified email at ucdavis.edu
Cited by 3685

[HTML][HTML] Sum frequency vibrational spectroscopy: the molecular origins of the optical second-order nonlinearity of collagen

…, M Wang, KM Reiser, CW Frank, A Knoesen - Biophysical journal, 2007 - cell.com
The molecular origins of second-order nonlinear effects in type I collagen fibrils have been
identified with sum-frequency generation vibrational spectroscopy. The dominant contributing …

Ultrashort-pulse second-harmonic generation. I. Transform-limited fundamental pulses

E Sidick, A Knoesen, A Dienes - JOSA B, 1995 - opg.optica.org
A general theory of second-harmonic generation, including all the effects of group-velocity
dispersion, is given for coherent ultrashort pulses with arbitrary shapes and carrier chirps. …

Second-harmonic generation and absorption studies of polymer–dye films oriented by corona-onset poling at elevated temperatures

MA Mortazavi, A Knoesen, ST Kowel, BG Higgins… - JOSA B, 1989 - opg.optica.org
Second-harmonic generation and spectroscopic absorption measurements are used to study
the nonlinear-optical thin-film properties of azo dye guest molecules oriented in a polymer …

Trapping forces in a multiple-beam fiber-optic trap

E Sidick, SD Collins, A Knoesen - Applied optics, 1997 - opg.optica.org
Transverse and axial trapping forces are calculated in the ray optics regime for a multiple-beam
fiber-optic light-force trap for dielectric microspheres located both on and off axis relative …

[HTML][HTML] Student performance improvement using interactive textbooks: A three-university cross-semester analysis

…, F Vahid, R Lysecky, A Knoesen… - 2015 ASEE Annual …, 2015 - peer.asee.org
We conducted studies to determine whether introducing an interactive textbook into introductory
STEM (science, technology, engineering, math) courses can improve student grades. …

Shot-noise limited detection for surface plasmon sensing

…, WP Risk, BE Feller, RD Miller, A Knoesen - optics …, 2011 - opg.optica.org
It is demonstrated that surface plasmon sensing can be performed in the shot-noise-limited
regime to resolve index of refractive changes on the order of 10^−10/√Hz at input powers of …

Design and In Vivo Evaluation of a Non-Invasive Transabdominal Fetal Pulse Oximeter

…, R Moeinzadeh, C Pivetti, A Knoesen… - IEEE Transactions …, 2020 - ieeexplore.ieee.org
Objective: Current intrapartum fetal monitoring technology is unable to provide physicians
with an objective metric of fetal well-being, leading to degraded patient outcomes and …

Extracellular electron transfer increases fermentation in lactic acid bacteria via a hybrid metabolism

…, ET Stevens, S Li, P Finnegan, J Nelson, A Knoesen… - Elife, 2022 - elifesciences.org
Energy conservation in microorganisms is classically categorized into respiration and
fermentation; however, recent work shows some species can use mixed or alternative bioenergetic …

Dispersive models for the finite-difference time-domain method: Design, analysis, and implementation

C Hulse, A Knoesen - JOSA A, 1994 - opg.optica.org
Digital signal processing techniques are used to design, analyze, and implement discrete
models of polarization dispersion in finite-difference time-domain (FDTD) simulations. These …

Recovering the fetal signal in transabdominal fetal pulse oximetry

DD Fong, A Knoesen, M Motamedi, T O'Neill, S Ghiasi - Smart Health, 2018 - Elsevier
Non-invasive transabdominal fetal pulse oximetry (TFO) can provide physicians with a better
metric of fetal well-being than currently-used fetal monitoring methods. There are two major …