Results 141 to 150 of about 191,825 (368)

A Possible Theoretical Basis for Propulsive Force Generation by Both Conventional and Unconventional Means [PDF]

arXiv, 1999
A possible theoretical basis is given for propulsive force generation by both conventional and unconventional means.
arxiv  

Resistance of Ships and Screw Propulsion [PDF]

, 1908
W. H. White
openalex   +1 more source

Considerations for Reducing Aviation’s CO2 with Aircraft Electric Propulsion

Journal of Propulsion and Power, 2019
The reduction of aviation’s CO2 emissions is a major objective of the aviation industry. About 98% of the world’s aviation CO2 is produced by aircraft with gross takeoff mass above 25 metric tonnes...
A. Epstein, S. O'flarity
semanticscholar   +1 more source

Development of a Novel, All‐Aromatic High Tensile Modulus Liquid Crystalline Polyimide for Fused Filament Fabrication Applications

Advanced Functional Materials, EarlyView.
A novel, high tensile modulus, fully aromatic thermotropic liquid crystalline polyimide (LCPI) with better solvent resistance and thermal stability is synthesized. Tensile specimens are fabricated using both injection molding and FFF processes, accomplished via lower viscosity enabled by the LC phase.
Zhenning Yu, Mia Carrola, Bingqian Zheng, Loon‐Seng Tan, Amir Asadi, Christopher A. Crouse, Hilmar Koerner   +6 more
wiley   +1 more source

Neutrino Propulsion for Interstellar Spacecraft [PDF]

J.Br.Interplanet.Soc. 52 (1999) 424, 1998
An exotic spacecraft propulsion technology is described which exploits parity violation in weak interactions. Anisotropic neutrino emission from a polarized assembly of weakly interacting particles converts rest mass directly to spacecraft impulse.
arxiv  

A Gym for Cells—Direct Laser Writing of Magnetic Multilayered Micro Actuators for Mechanical Stimulation of Cells

Advanced Functional Materials, EarlyView.
Surface‐attached multilayer micromagnet systems are fabricated by two‐photon crosslinking. The pillar‐shaped micro actuators consist of a soft and flexible surface‐attached cell‐repellent hydrogel layer at the bottom, acting as a hinge and a cell‐adhesive hydrophobic polymer filled with magnetic nanoparticles.
Nicolas Geid, Ayman Husari, Eleonora Galli, Lukas Leffler, Pascal Tomakidi, Jürgen Rühe   +5 more
wiley   +1 more source

Versatile Selective Soldering via Molten Metal Printing for Heat‐Sensitive 3D Electronics and Smart Wearables

Advanced Functional Materials, EarlyView.
Selective soldering via molten metal printing enables component integration, even in heat‐sensitive applications across fields like additive manufacturing, sustainable electronics, and smart textiles. This method overcomes the temperature limitations of existing technologies.
Dániel Straubinger, Peter Koltay, Roland Zengerle, Sabrina Kartmann, Zhe Shu   +4 more
wiley   +1 more source

Discussion: “An Improved Method of Screw Propulsion” (Root, John B., 1881, Trans. ASME, 2, pp. 442–457) [PDF]

, 1881
Wolff, John B. Root, C. T. Porter, Le Van, Oberlin Smith, Denton, Sweet, S. W. Robinson, F. B. Allen, Cotter   +9 more
openalex   +1 more source

Stable Radical Polymers as New Electroactive Materials: Synthesis, Properties, and Emerging Applications

Advanced Functional Materials, EarlyView.
This review covers the recent advances in the synthesis and properties of stable radical polymers (SRPs) and presents their applications in electronics, magnetics, optoelectronics, and biomedicines. The review concludes with a discussion of the challenges in radical chemistry and functionalization, while shedding light on the groundbreaking potential ...
Yufeng Xiong, Yingjiang Li, Xinfang Cui, Shiwei Li, Xiangdong Peng, Yanyun Ju, Tong Zhou, Rui Feng, Yang Zhang, Zehong Wang, Qing Wang, Lijie Dong   +11 more
wiley   +1 more source

Harnessing Outer Space for Improved Electrocaloric Cooling

Advanced Functional Materials, EarlyView.
A novel radiative heat sink/source‐integrated electrocaloric (R‐iEC) system combines the electrocaloric (EC) effect with a thermally conductive radiative cooler (TCRC) to address heat dissipation limitations in EC devices. Utilizing outer space as a heat sink, the system achieves up to 240 W m−2 of heat dissipation performance, making it highly ...
Dong Hyun Seo, Hyung Rae Kim, Joo Ho Yun, Hyunkyu Kwak, Do Hyeon Kim, Se‐Yeon Heo, Rujun Ma, Gil Ju Lee, Young Min Song   +8 more
wiley   +1 more source