Results 41 to 50 of about 2,701 (247)

Coaxial Melt Electrowriting

Advanced Materials Technologies, EarlyView.
Coaxial melt electrowriting is established to produce dual‐property microfibers with diameters spanning 1.6–29.2 µm. Stable coaxial laminar flow is preserved under electrohydrodynamic thinning, enabling controlled binary and gradient material switching within individual continuous fibers.
Patrick C. Hall, D. Iman von Briesen, Maya Kasteleiner, Gabriela M. Bailey, Diana Ostojich, Harrison W. Reid, Andre Olarra, Benjamín J. Alemán, Simon Luposchainsky, Biranche Tandon, Ramesh Jasti, Paul D. Dalton   +11 more
wiley   +1 more source

Reattachment Phenomena and Diffusion of Plane Submerged Water Jets.

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1998
Plane submerged water jets which issue from nozzle into quiescent water in channel have been known to attach to the adjacent solid or free surface owing to the Coanda effect. This paper is concerned with an experimental investigation on the plane submerged jets. Flows are visualized by using hydrogen bubbles and tracer particles.
SUDO, Kozo, HIBARA, Hideki, SUMIDA, Masaru, SHIMADA, Nobukazu, ISHIBASHI, Yukio, HIRAOKA, Teruaki   +5 more
openaire   +2 more sources

Microfabrication of Soft Millirobots Propelled by Low Voltage Electrohydraulic Actuators

Advanced Materials Technologies, EarlyView.
Manual layer‐by‐layer assembly is replaced by wafer‐level MEMS batch fabrication for compliant polymer‐based electrohydraulic actuators. The microfabricated devices integrate sacrificially defined microcavities, Parylene‐C‐sealed inlets, and multilayer polymer–metal films.
Shai Shmulevich, Florian Hartmann, Herbert Shea   +2 more
wiley   +1 more source

Structure of underexpanded round air jets submerged in water [PDF]

International Journal of Multiphase Flow, 1989
Abstract The structure and mixing properties of round turbulent air jets submerged in still water were studied experimentally, considering subsonic and sonic jet exit conditions with underexpansion ratios as high as 8: 1. Measurements included the following mean properties: static pressure distributions along the axis, void-fraction distributions and
Loth, Eric, Faeth, Gerard M.
openaire   +2 more sources

Multimodal Locomotion in Insect‐Inspired Microrobots: A Review of Strategies for Aerial, Surface, Aquatic, and Interfacial Motion

Advanced Robotics Research, EarlyView.
This review identifies key design considerations for insect‐inspired microrobots capable of multimodal locomotion. To draw inspiration, biological and robotic strategies for moving in air, on water surfaces, and underwater are examined, along with approaches for crossing the air–water interface.
Mija Jovchevska, Kaushik Jayaram, Nicole Xu   +2 more
wiley   +1 more source

Tumbling Magnetic Microrobots for Targeted In Vivo Drug Delivery in the GI Tract

Advanced Robotics Research, EarlyView.
We introduce a microrobot design and integrated system for on‐demand targeted drug release in the gastrointestinal tract. The microrobot has an embedded magnet for actuation with external magnetic fields and is visualized in real time using ultrasound. It has two drug release ports sealed with a thermally sensitive wax. Local heating of the wax using a
Aaron C. Davis, Luis Carlos Sanjuan Acosta, Shubh P. Mehta, Baiyan Qi, Yang Yang, Luis Solorio, Craig J. Goergen, David J. Cappelleri   +7 more
wiley   +1 more source

Origami‐Inspired Structural Design for Aquatic‐Terrestrial Amphibious Robots

Advanced Robotics Research, EarlyView.
This work presents a lightweight amphibious origami robot actuated by a single shape memory alloy wire. A rigid foldable origami structure with displacement amplification enables efficient terrestrial crawling and aquatic swimming. The addition of fan‐shaped units allows controllable turning in both environments.
Weiqi Liu, Chunlong Wang, Xiaohang Sun, Hongwei Guo, Jiayao Ma, Yan Chen   +5 more
wiley   +1 more source

Thermal-induced buoyant water jet discharge under shallow coastal water conditions

International Journal of Thermofluids
A novel discharge dispersion model is developed to simulate the complex three-dimensional flow behaviour of thermal-induced buoyant water jets under current-wave coexisting conditions.
Amir Bordbar, Yong Ming Dai, Simone Michele, Ola Zawalna-Geer, Zhengwei Chen, Salah A Faroughi, Yeaw Chu Lee   +6 more
doaj   +1 more source

Ultrasound‐Actuated Gene Editing in Human Kidney Organoids

Advanced Science, EarlyView.
Peptide‐stabilized nanoemulsions enable spatially controlled, ultrasound‐triggered delivery of gene‐editing proteins deep within human kidney organoid tissues. Focused acoustic pulses drive droplet vaporization, propelling cargo into target renal cells while preserving native tissue microarchitecture. This non‐viral platform improves both the depth and
Michael A. Miller, Nicole Vo, Utkarsh, Ivan Sokirniy, Justin Pritchard, Benjamin S. Freedman, Scott H. Medina   +6 more
wiley   +1 more source

The effect of cutting process on surface microstructure and hardness of pure and Al 6061 aluminium alloy

Engineering Science and Technology, an International Journal, 2015
In this study pure aluminium and Al 6061 aluminium alloy material had been cut with saw, milling, submerged plasma, plasma, laser, wire electric discharge machining, oxyfuel and Abrasive water jet.
Adnan Akkurt
doaj   +1 more source