Results 161 to 170 of about 3,985,486 (233)

A Compact Annular Electrostatic Clutch Joint: Dynamic Response Modeling and Time‐Sharing Control for Underactuated Robots

open access: yesSmartBot, EarlyView.
Electrostatic clutches offer programmable variable stiffness for multi‐DOF robots, but their continuous motion is usually bottlenecked by spatial constraints and detachment delays. Here, the authors report a compact annular electrostatic clutch joint with a biphasic amplitude‐frequency modulation strategy to rapidly mitigate residual polarization ...
Haochen Yong   +5 more
wiley   +1 more source

Robust optical injection locking to a 250 MHz frequency comb without narrow-band optical pre-filtering

open access: yes, 2011
A semiconductor laser was injection locked to a single optical frequency comb mode with a dither-free phase locked loop.
Wu, D.S.   +3 more
core  

Intelligent Continuum Micromachines in Complex Confined Spaces

open access: yesSmartBot, EarlyView.
The cover depicts a conceptual design for an intelligent continuum micromachine entering a target capsule used in fusion‐energy research through its slender gas‐fill tube. By combining route‐adaptive deformation, embedded sensing, and a functional end effector, the robot could inspect hidden defects, assess local conditions, and support localized ...
Huayang Sai   +7 more
wiley   +1 more source

A picosecond optical parametric oscillator synchronously pumped by an amplified gain-switched laser diode

open access: yes
We demonstrate a picosecond optical parametric oscillator synchronously pumped by a fiber-amplified gain-switched laser diode.
Gawith, C.B.E.   +7 more
core   +1 more source

Integration of Refractive Microlenses on BP/MoS2 Photodiodes for Enhanced Infrared Photodetection

open access: yesSmall, EarlyView.
This study demonstrates the successful integration of black phosphorus/molybdenum disulfide infrared photodetectors with refractive microlenses to significantly enhance detection. The design achieves a 20‐fold photocurrent enhancement, enabling a room‐temperature detectivity of 1.83 × 109 cmHz1/2W−1, and demonstrates high‐resolution (1023 × 768) single‐
Varsha Ashwin Vedaraj   +11 more
wiley   +1 more source

Woven Eutectic Lamellar Structures Lead to Ultrahigh Strength and Energy Absorption Capacity in Additively Manufactured Lattice Structures

open access: yesSmall Structures, Volume 6, Issue 5, May 2025.
Herein, AlCoCrFeNi2.1 is selected to produce lattice structures by selective laser melting. The as‐printed lattice structures consist of numerous colonies of nanosized eutectic lamellar structures which are bent and interwind with each other to form a woven microstructure. The unique microstructure leads to unprecedented effective metal strength, yield
Zhiyong Ji   +6 more
wiley   +1 more source

A practical topological insulator saturable absorber for mode-locked fiber laser. [PDF]

open access: yesSci Rep, 2015
Yan P   +8 more
europepmc   +1 more source

Jungfraujoch: 38 GB s−1 real‐time serial crystallography – data acquisition and live indexing feedback

open access: yesJournal of Applied Crystallography, EarlyView.
Jungfraujoch is a single‐node FPGA–GPU server that enables 38 GB s−1 real‐time crystallographic data acquisition using the PSI JUNGFRAU 9M detector at 2 kHz, with simultaneous on‐the‐fly processing, spot finding and indexing, and optional adaptive data reduction during continuous data streaming.Significant growth in the quantity of data presents a ...
J. Duan   +13 more
wiley   +1 more source

Surgical Management of Non‐Allergic Rhinitis—An EAACI Task Force Position Paper

open access: yesAllergy, EarlyView.
ABSTRACT Non‐allergic rhinitis is a frequent yet underdiagnosed cause of chronic nasal symptoms, including nasal congestion, rhinorrhoea, and upper airway hyperreactivity. Its pathophysiology involves neurogenic dysregulation, leading to excessive mucus production and vasodilation.
Marie Lundberg   +18 more
wiley   +1 more source

‘In silico labelling’: Exploring the biological landscape at the nanoscale using intelligent multimodal optical microscopy

open access: yesJournal of Microscopy, EarlyView.
Abstract Multimodal optical microscopy has recently converged with artificial intelligence (AI) to enable in silico labelling—the computational prediction of fluorescence‐like molecular contrast from label‐free measurements. Fluorescence plays a crucial role in linking microscopy and spectroscopy at molecular level, enabling image formation by means of
A. Diaspro   +9 more
wiley   +1 more source

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