Results 81 to 90 of about 341,566 (269)

Membrane Wrapping for High Capacity and Rapidly Switchable Adhesives

Advanced Functional Materials, EarlyView.
A membrane‐wrapping mechanism enables high‐capacity, rapidly switchable adhesion by coupling suction, friction, and adhesion. Broadband performance is achieved in dry and underwater conditions, allowing fast, reversible manipulation of objects of diverse sizes and shapes, from delicate eggs and berries to flat, complex, or heavy objects. These outcomes
Yeunhee Kim, Camryn A. Mills, Michael D. Bartlett   +2 more
wiley   +1 more source

How to Chemically Protect PFAS‐Free Membranes in Fuel Cells: Radical Quenching Poly(vinylphosphonic acid) Layer

Advanced Functional Materials, EarlyView.
Hydrocarbon membranes are a greener alternative to PFSA in PEM fuel cells, but degrade rapidly from radical attack. We present a novel strategy using poly(vinylphosphonic acid) (PVPA) as a local radical scavenger. Incorporated as an interfacial barrier, PVPA enhances chemical stability and significantly extends membrane lifetime under accelerated ...
Hendrik Sannemüller, Hannes Liepold, Frederik Brendel, Janka Friese, Carolin Klose, Tym de Wild, Andreas Münchinger   +6 more
wiley   +1 more source

Multimodal superposition modeling and acoustic field characteristics analysis of scattering sound field from spherical targets

AIP Advances
In this paper, a multimodal superposition model of the scattered acoustic field from a spherical target is investigated and the distribution laws of the scattered acoustic field of different sizes of rigid and elastic spheres at different frequencies are
Ruoyun Xing, Jianjun Zhu, Shuhan Ming, Haotian Gu, Peihong Wang   +4 more
doaj   +1 more source

The Joint Disclosure Of The Elements Of The Clutch Case For Repair Of Underwater Pipe-lines [PDF]

Научно-технический вестник Брянского государственного университета, 2015
The question of providing the density interface between the coupling halves of the hull underwater-gauge steel coupling designed for repair of the underwater section of pipeline.
Polyanin M.P.
doaj  

Dense Nanofibrillar Collagen–Silica Hybrids with High Strength and ECM‐Mimetic Tissue Integration

Advanced Functional Materials, EarlyView.
Dense nanofibrillar collagen–silica hybrids are engineered by synchronizing collagen fibrillogenesis with silica condensation, producing printable scaffolds that unexpectedly approach native extracellular matrix organization and strength. These cell‐free constructs guide endogenous cell‐infiltration, enable localized matrix remodeling, and integrate ...
Norein Norein, Shima Tavakoli, Philipp Wolf, Xie Ling, Veronica Rondahl, Klaus Leifer, Gry Hulsart‐Billström, Jöns Hilborn   +7 more
wiley   +1 more source

Generating and Detecting Broad-Band Underwater Multiple OAMs Based on Water-Immersed Array

IEEE Access, 2020
In this paper, we focus on the generation of broadband underwater vortex waves carrying multiple OAMs. Based on a wideband underwater antenna, a water-immersed horn antenna array is designed and tested.
Yang Yang, Gao Liu, Fei Shen, Jianhua Sun, Kai Guo, Zhongyi Guo, Qing Zhou, Haibo Jiang, Zhe Wu, Baoqing Zeng, Yubin Gong   +10 more
doaj   +1 more source

Bio‐Inspired Molecular Events in Poly(Ionic Liquids)

Advanced Functional Materials, EarlyView.
Originating from dipolar and polar inter‐ and intra‐chain interactions of the building blocks, the topologies and morphologies of poly(ionic liquids) (PIL) govern their nano‐ and micro‐processibility. Modulating the interactions of cation‐anion pairs with aliphatic dipolar components enables the tunability of properties, facilitated by “bottom‐up ...
Jiahui Liu, Marek W. Urban
wiley   +1 more source

Underwater robotic suturing

Minimally Invasive Therapy & Allied Technologies, 2016
Laparoscopic and robotic surgeries have become popular, and this popularity is increasing. However, the environment in which such surgeries are performed is rarely discussed. Similar to arthrosurgery performed in water, artificial ascites could be a new environment for laparoscopic surgery.
Masahiko, Kawaguchi, Masanari, Shimada, Norihiko, Ishikawa, Go, Watanabe   +3 more
openaire   +2 more sources

MAGTWIST: A Magnetically‐Driven Rotary Actuator Using a Traveling‐Wave With Integrated Stiffness Tunability

Advanced Functional Materials, EarlyView.
MAGTWIST: A compact magnetic rotary actuator, enabling smooth, stepless rotation, and on‐demand locking. Inspired by peristalsis, a soft polymer belt generates a traveling‐wave, enabling 270° rotation when heated. Cooling stiffens the belt, locking it in position and enabling it to withstand high loads.
Simon Frieler, Jean‐Paul P.M. de Vries, Sarthak Misra, Venkatasubramanian Kalpathy Venkiteswaran   +3 more
wiley   +1 more source

High-Efficiency 4 × 4 × 10 Gbps Orbital Angular Momentum Modes Incorporated into Satellite–Ground–Underwater Optical Wireless System under Diverse Turbulences

Photonics
With their unique capability to deal with a considerable geographic area, satellite–ground–underwater optical wireless communication (OWC) systems are an appealing alternative to meet the ever-increasing demand for end-to-end broadband services.
Meet Kumari, Satyendra K. Mishra
doaj   +1 more source