Results 131 to 140 of about 44,520 (308)
Ultrafast high power fiber lasers and their applications
, 2012 In this thesis I report experimental studies toward developing versatile, compact, and reliable ultrafast sources in the 1.5 micron wavelength region, and their power scalability.The first part of the thesis reports on the development of a stable all ...
Vazquez Zuniga, Luis Alonso +1 more
core
AcousticsImpulsive noise poses a significant challenge to broadband feedforward active noise control (ANC) systems, particularly in sensitive environments such as infant incubators.
Lichuan Liu, Lilin Du, Xianwen Wu
doaj +1 more source
Advanced Science, EarlyView.A nano‐plasma device enables watt‐level on‐chip THz generation through picosecond switching triggered by secondary electron emission avalanche. An ultra‐dense electron sheet initiates nano‐plasma formation within a ∼100 nm gap, driving rapid energy release into an integrated resonator.
Guangyu Sun +4 more
wiley +1 more source
Constraints of ideal broadband noise cancellation in feedforward active noise control systems
, 2012 Previous demonstrations have shown that broadband noise reduction in feedforward active noise control systems is limited to 23-25 dB. This is suspected to be the result of nonlinearity, constraints in adaptive algorithms and causality, and the extent of ...
Lam, J, Chan, YJ, Huang, L
core
Noise sources for duct acoustics simulations: broadband noise and tones
, 2014 While simulating acoustic tones propagating in ducts or waveguides is relatively well established, broadband noise is comprised of a wide range of frequencies and at each frequency the acoustic energy is generally distributed over all the cut-on modes of
Gabard, G.
core +1 more source
Advanced Science, EarlyView.Acoustic plasmons in Ti3C2Tx MXene strongly compress infrared electromagnetic fields and enhance light–matter interactions at the nanoscale. This platform couples broadband plasmon excitations with molecular vibrations, enabling simultaneous sensing of high‐ and low‐frequency vibrational modes in ultrathin PMMA and graphene oxide films, and extending ...
Changhoon Park +7 more
wiley +1 more source
Computation of Airframe Noise with the Discontinuous Galerkin Method
, 2008 Airframe noise is generated through turbulence passing by the edges of (rigid) bodies. Considering the low noise engines of modern airliners, it is an important noise source during the approach ...
Bauer, Marcus
core
Advanced Science, EarlyView.A protocol of fs‐laser‐induced periodic phase‐transition of 2D‐MoTe2 template, inducing AuNPs@1T’‐MoTe2 nanograting, is developed. The labeled AuNPs@1T’‐MoTe2 substrate conjugated with specialized immunoglobulin G demonstrates an unexpectedly high discrimination accuracy close to unity for serological diagnosis of rheumatoid arthritis by frequency ...
Yao Yao +9 more
wiley +1 more source
Ultra‐Wide‐Field Noninvasive Imaging Through Scattering Media Via Physics‐Guided Deep Learning
Advanced Science, EarlyView.We propose a physics‐guided adaptive dual‐domain learning method for ultra‐wide‐field noninvasive imaging through scattering media, namely UNI‐Net. Our method not only reduces the requirement for real experimental data by an order of magnitude but also enables clear imaging of complex scenes with an ultra‐large field of view, which is 164 times the OME
Lintao Peng +5 more
wiley +1 more source
Advanced Science, EarlyView.In this study, an electrostatically self‐assembled WPU‐MXene@FC flexible fabric constructs a “nest‐like” structure on fibers, building construct MXene multiple loss paths, achieving ultra‐wideband absorption of 25.3–1200 GHz in a thickness of 1.8 mm, while also exhibiting superhydrophobicity, acid and alkali resistance, and bending resistance ...
Min Luo +7 more
wiley +1 more source