Results 121 to 130 of about 58,964 (242)

Self‐Powered, Ultra‐Sensitive InGaAs/ITO Nanowire Radial Junction Infrared Photodiode for Low Flux Imaging at Room Temperature

Advanced Functional Materials, EarlyView.
This study reports a self‐powered InGaAs nanowire photodetector achieving single‐photon‐level sensitivity in the shortwave infrared at non‐cryogenic temperatures. The device demonstrates high‐speed imaging capabilities even under extremely low‐flux conditions.
Kosala Dhanawansha, Chaohao Chen, Zhe Li, Tuomas Haggren, Dawei Liu, Yang Yu, Baolei Liu, Sanjay Krishna, Hark H. Tan, Chennupati Jagadish, Lan Fu   +10 more
wiley   +1 more source

Flattened Gaussian beam generation by using saturable absorbers in conventional mirror unstable Q-switched resonators

, 2001
A method of large volume Super Gaussian beam generation (SGBG) by use of saturable absorbers in unstable resonators is discussed. The advantages of the obtained beams are improved and practical aspects of the generation are studied for use in high energy
Denchev, O.E., Petrov, P.G.
core   +1 more source

Multidimensional‐Encoded High‐Fidelity Spectrometers With a Floating‐Base Bipolar Junction

Advanced Functional Materials, EarlyView.
A floating‐base bipolar junction photodetector enables multidimensional spectral encoding through synergistic gate‐ and drain‐bias modulation of interfacial barrier matching. The resulting complementary spectral responses form a diverse, weakly correlated response matrix, enabling robust and high‐fidelity spectral reconstruction even at sub‐nanoampere ...
Sang‐Hyeon Lee, Junho Min, Yonas Tsegaye Megra, Min‐Hye Jeong, Hwi Je Woo, Jaewon Han, Junheon Ha, Gyunghyun Jang, Young Jae Song, Hyun‐Soo Ra, Hoon Hahn Yoon, Jong‐Soo Lee   +11 more
wiley   +1 more source

Femtosecond Pulse Generation with Graphene-Gold Supercapacitor Saturable Absorbers near 800 nm

, 2016
We report, what is to our knowledge, the shortest operation wavelength for graphene based supercapacitor saturable absorbers, generating 52-fs pulses from a Ti:sapphire laser near 830 nm with bias voltages less than 1.2 V.
Muti, Abdullah, Sennaroǧlu, Alphan, Özharar, Sarper, Baylam, Isinsu, Cihan, Can, Kocabaş, Coşkun   +5 more
core  

Performance of external cavity mode-locked semiconductor lasers employing reverse biased saturable absorbers

, 2022
S.129-132We have experimentally investigated the performance of external cavity mode-locked semiconductor lasers employing reverse biased saturable absorbers.
Kroh, M., Skovgaard, P.M.W., Yvind, K., Hanberg, J., Mork, J.   +4 more
core  

Nonlinear Optical Response of Reflective MXene Molybdenum Carbide Films as Saturable Absorbers. [PDF]

Nanomaterials (Basel), 2020
Wang J, Wang Y, Liu S, Li G, Zhang G, Cheng G.   +5 more
europepmc   +1 more source

Remote Activation of Wnt Signaling and Cell Proliferation by E‐Cadherin Magnetomechanical Stimulation

Advanced Functional Materials, EarlyView.
A pioneering magnetogenetic toolkit enables non‐invasive, precise spatiotemporal modulation of intracellular Wnt/β‐catenin signaling. Functionalized magnetic nanoparticles (MNPs@E/EC15) target cellular E‐cadherins to generate localized magnetomechanical forces under low‐intensity magnetic fields.
Christian Castro‐Hinojosa, Pablo Martínez‐Vicente, Lucía G. Recaredo, Susel Del Sol‐Fernández, Pilar Gomollón‐Zueco, Yilian Fernández‐Afonso, Raluca M. Fratila, María Moros   +7 more
wiley   +1 more source

Tantalum–Palladium Ultrathin Resistance Hydrogen Sensor

Advanced Functional Materials, EarlyView.
Nanoconfined Ta‐alloy thin films enable fast, reversible hydrogen sensing by suppressing unwanted phase transitions. A Ta0.88${\rm Ta}_{0.88}$Pd0.12${\rm Pd}_{0.12}$ sensing layer delivers hysteresis‐free detection from ppb to 100% H2${\rm H}_2$ at room temperature.
Folkert Isaäc Bernhard Straus, Herman Schreuders, Lars Johannes Bannenberg   +2 more
wiley   +1 more source

A comparative study of three techniques for the fabrication of V₂O₅ thin film saturable absorbers for fiber laser

Journal of Materials Science: Materials in Engineering
A Q-switched fiber laser's stability is crucial for real-world applications. This paper presents methods for enhancing the stability of Q-switched fiber lasers and a thorough measurement procedure.
Shakeela Bibi, S. Sadam Hussain, Abdul Jabbar, M. Sohail, Sadia Khalid, R. Ahmed   +5 more
doaj   +1 more source

Endosomal Escape of siRNA Polyplexes: A Molecular Dynamics Perspective on Underlying Mechanisms

Advanced Functional Materials, EarlyView.
Molecular dynamics simulations reveal distinct endosomal escape mechanisms of siRNA nanoparticles, ranging from electrostatic membrane attachment to hydrophobic membrane fusion. Hydrophobic residues and anionic endosomal lipids emerge as key determinants of membrane disruption, linking molecular interactions to experimental delivery performance and ...
Katharina M. Steinegger, Min Jiang, Florian Belger, Fabian Link, Benjamin Winkeljann, Olivia M. Merkel   +5 more
wiley   +1 more source