Results 161 to 170 of about 278,885 (252)

Absorption of Broadband Low‐Frequency Sound Beyond the Thermodynamics Limit: An Acoustic Resonator With Magnetic Bearing

Advanced Science, EarlyView.
This work presents a magnetic‐bearing acoustic resonator that overcomes the thermodynamics limit of sound absorption. By introducing tunable negative stiffness, it achieves broadband low‐frequency absorption within a compact cavity, far exceeding the performance achievable by classic mass‐tuned designs.
Ying Hu, Zhe Zhang, Bohua Huang, Xue Han, Hallam Bastin Kilcoyne, Lixi Huang   +5 more
wiley   +1 more source

A gas-enshrouded and gas-reddened black hole at cosmic dawn. [PDF]

Nature
Naidu RP, Matthee J, Katz H, de Graaff A, Oesch PA, Smith A, Greene JE, Brammer G, Weibel A, Hviding R, Chisholm J, Labbé I, Simcoe RA, Witten C, Sun WQ, Atek H, Baggen JFW, Belli S, Bezanson R, Boogaard LA, Bose S, Bouwens RJ, Covelo-Paz A, Dayal P, Fudamoto Y, Furtak LJ, Giovinazzo E, Goulding A, Gronke M, Heintz KE, Hirschmann M, Illingworth G, Inoue AK, Johnson BD, Leja J, Leonova E, McConachie I, Maseda MV, Natarajan P, Nelson E, Setton DJ, Shivaei I, Sobral D, Stefanon M, Tacchella S, Toft S, Torralba A, van Dokkum P, van der Wel A, Volonteri M, Walter F, Wang B, Watson D, Whitaker K.   +53 more
europepmc   +1 more source

A High‐Resolution Self‐Powered Angular Displacement Sensor Based on Triboelectric Nanogenerator With Time‐Grating

Advanced Science, EarlyView.
A self‐powered phase‐encoding sensing paradigm enables direct motion‐to‐time information conversion, providing a compact and autonomous strategy for high resolution angular displacement measurement. ABSTRACT In modern manufacturing and engineering, angular displacement sensors are crucial for motion control and feedback systems in Electromechanical ...
Shuxian Wang, Donghang An, Shiyou Liu, Zhiyi Wu   +3 more
wiley   +1 more source

Numerous bow shocks in the outer Helix Nebula. [PDF]

Nature
van Dokkum P, Abraham R, Bowman WP, Chen S, Janssens SR, Lokhorst DM, Pasha I, Rhea C.   +7 more
europepmc   +1 more source

Stretchable, Tough, and Luminescent Perovskite Molecular Ferroelectric Composite: Empowering Reliable Self‐Powered Motion Sensing in High Humidity and Subzero Temperatures

Advanced Science, EarlyView.
A flexible molecular ferroelectric composite is fabricated via in situ growth of luminescent DMAA‐MnCl3 ferroelectric crystals within a SEBS/SIS double‐polymer matrix. It delivers 7.54 MPa tensile strength, over 1200% tensile strain, durable piezoelectric motion sensing, and excellent harsh‐environment stability for all‐weather wearable biomechanical ...
Shuangqing Li, Zhe‐Kun Xu, Zheng Xing, Jin‐Wang Liu, Yong‐Quan Wu, Peng‐Fei Li, Zhong‐Xia Wang   +6 more
wiley   +1 more source

Finite-Capacity Thermodynamics of Causal Horizons. [PDF]

Entropy (Basel)
Antiba CA.
europepmc   +1 more source

Bio‐Inspired Bidirectional Winding Origami With Programmable Modular Reconfigurability and Scalability

Advanced Science, EarlyView.
A bio‐inspired bidirectional‐winding origami platform enables scalable and programmable deployable structures. Double axial folding inspired by earwig hindwings and Flasher‐based hybridization create modular multilayer architectures with diverse attainable winding angles under fixed boundary conditions.
Wenyao Zhang, Chunlong Wang, Mingli Liu, Chuang Shi, Hongwei Guo, Rongqiang Liu   +5 more
wiley   +1 more source

Discs no more: the morphology of low-mass simulated galaxies in FIREbox. [PDF]

Mon Not R Astron Soc
Benavides JA, Sales LV, Wetzel A, Moreno J, Feldmann R, Mercado FJ, Bullock JS, Hopkins PF, Faucher-Giguère CA, Stern J, Wheeler C, Kereš D.   +11 more
europepmc   +1 more source

From Folding Mechanics to Robotic Function: A Unified Modeling Framework for Compliant Origami

Advanced Science, EarlyView.
A geometry‐consistent DDG framework captures compliant origami deformation from rigid‐like folding to soft panel bending. By tuning crease and panel stiffness, bistable snap‐through responses transform into smooth monostable deformation, enabling programmable stability and robot‐scale locomotion.
Bohan Zhang, Bo Wang, Huajiang Ouyang, Zhigang Wu, Haohao Bi, Jiawei Xu, Mingchao Liu, Weicheng Huang   +7 more
wiley   +1 more source

Tidal tail identification and detailed analysis of the open star cluster King 13 using Gaia DR3 and 2MASS. [PDF]

Sci Rep
Ahmed NM, Darwish MS.
europepmc   +1 more source