Results 51 to 60 of about 9,538 (308)

Charge‐Induced Morphing Gels for Bioinspired Actuation

Advanced Functional Materials, EarlyView.
This study introduces a novel electroactive actuation mechanism that enables the gel material to generate substantial and reversible shape‐changing while preserving topological and isochoric (volumetric) equivalence. The resultant morphing behaviors can mimic the movements of muscle‐driven organelles in nature, including cilia‐like beating and ...
Ciqun Xu, Saba Firouznia, Charl F. J. Faul, Majid Taghavi, Jonathan Rossiter   +4 more
wiley   +1 more source

Development of a Throttleable 6 kN H₂O₂/Butyl Alcohol Rocket Engine

Aerospace
The increasing demand for versatile and sustainable propulsion systems has intensified research into green propellants and advanced thrust modulation technologies.
Zbigniew Gut, Adrian Parzybut, David Perigo   +2 more
doaj   +1 more source

Thermal Decomposition of Hydrazines from Reactive Dynamics Using the ReaxFF Reactive Force Field [PDF]

, 2009
We report reactive dynamics (RD) studies on: the decomposition of bulk hydrazine (N_2H_4); the decomposition of bulk monomethyl-hydrazine (CH_3N_2H_3), hereafter referred to simply as methyl-hydrazine; the decomposition of hydrazine in the presence of ...
Goddard, William A., III, van Duin, Adri C. T., Zhang, Luzheng, Zybin, Sergey V.   +3 more
core   +2 more sources

Reconfigurable Magnetic Soft Microrobot for Acoustically Triggered Targeted Bacterial Sterilization

Advanced Functional Materials, EarlyView.
Reconfigurable magnetic soft microrobots integrate in situ‐grown piezoelectric zinc oxide nanorods that produce reactive oxygen species upon acoustic excitation. Combining magnetically guided transport with thermally induced planar reconfiguration, the microrobots achieve targeted delivery and enhanced bacterial sterilization through efficient on ...
Quan Gao, Fan Li, Jiajie Gao, Elric Zhang, Yingdong Su, Ni Qin, Hao Ye, Josep Puigmartí, Giuseppe Cantarella, Simone Schuerle, Jiang Wu, Bradley J. Nelson, Salvador Pané   +12 more
wiley   +1 more source

Coordinated Multi‐Component Gradient Engineering of Catalyst Layers for Advanced Polymer Electrolyte Fuel Cells

Advanced Functional Materials, EarlyView.
This work presents a continuous linear gradient catalyst layer design, a general strategy for improving membrane electrode assemblies across electrochemical devices. Fabricated via a dual‐nozzle spray coating method, the architecture controls the Pt/carbon ratio, ionomer content and ionomer type across the catalyst layer, enhancing proton conduction ...
Shangwei Zhou, Matt P. Tudball, Yiming Guo, Bia Brandt, Adam Zucconi, Wenjia Du, Junfu Bu, Daniel H. C. Wan, Jianuo Chen, Emanuele Magliocca, Feng Ryan Wang, Alexander J.E. Rettie, Patrick S. Grant, Paul R. Shearing, Rhodri Jervis, Thomas S. Miller   +15 more
wiley   +1 more source

Ignition and combustion characteristics of metallized propellants [PDF]

During this reporting period, theoretical work on the secondary atomization process was continued and the experimental apparatus was improved. A one-dimensional model of a rocket combustor, incorporating multiple droplet size classes, slurry combustion ...
Mueller, D. C., Turns, Stephen R.
core   +4 more sources

Monoethanolamine-Based Fuels Hypergolic with Rocket-Grade Hydrogen Peroxide

Aerospace
The object of this work is to study the ignition performances of promising catalytically promoted amino-based green fuels to be used in combination with rocket-grade hydrogen peroxide.
Luca Caffiero, Stefania Carlotti, Filippo Maggi   +2 more
doaj   +1 more source

Recent Advances in Synthesis and Properties of Nitrated-Pyrazoles Based Energetic Compounds

Molecules, 2020
Nitrated-pyrazole-based energetic compounds have attracted wide publicity in the field of energetic materials (EMs) due to their high heat of formation, high density, tailored thermal stability, and detonation performance.
Shijie Zhang, Zhenguo Gao, Di Lan, Qian Jia, Ning Liu, Jiaoqiang Zhang, Kaichang Kou   +6 more
doaj   +1 more source

Dual‐Functional Additive Regulating Zn2+ Solvation Structure and (002) Plane‐Oriented Deposition for Dendrite‐Free Zn Anodes

Advanced Functional Materials, EarlyView.
Sulfosalicylic acid (SSA) is introduced as a bifunctional additive for Aqueous zinc‐ion batteries. SSA reconstructs the solvation structure of Zn2+ through the synergistic effects of its multiple functional groups, suppressing side reactions while selectively promoting Zn (002) deposition to prevent dendrite formation.
Le Gao, Ni Wang, Xingchen Xie, Liangkui Sun, Li Zhong, Wangbin Ding, Yushuang Tian, Sridhar Komarneni, Wencheng Hu   +8 more
wiley   +1 more source

Numerical model for concentration measurement during decomposition of H2O2 over silver catalyst

MATEC Web of Conferences, 2018
Minimal thrust of the order of few Newton is produced using micro thrusters, which are used for controlling the orientation and trajectory of the satellite or spacecraft.
Sanjay Vasanth. KB, Gokul Raj. G, Venkatesan M   +2 more
doaj   +1 more source