Results 321 to 330 of about 3,132,548 (365)

Magnetically-actuated microposts stimulate axon growth

Biophysical Journal, 2022
New strategies to promote neuronal regeneration should aim to increase the speed of axonal elongation. Biochemical signaling is a key factor in axon growth, but recent discoveries have shown that mechanical force, through a process referred to as stretch growth, can significantly influence the elongation rate.
Alessandro Falconieri, Nikita Taparia, Sara De Vincentiis, Valentina Cappello, Nathan J. Sniadecki, Vittoria Raffa   +5 more
openaire   +3 more sources

Carbon Nanodots Doped Super-paramagnetic Iron Oxide Nanoparticles for Multimodal Bioimaging and Osteochondral Tissue Regeneration via External Magnetic Actuation.

ACS Biomaterials Science & Engineering, 2019
Super-paramagnetic iron oxide nanoparticles (SPIONs) have multiple theranostics applications such as T2 contrast agent in magnetic resonance imaging (MRI) and electromagnetic manipulations in biomedical devices, sensors, and regenerative medicines ...
Bodhisatwa Das, A. Girigoswami, Abir Dutta, Pallabi Pal, Joy Dutta, Prabhash Dadhich, Pavan Srivas, S. Dhara   +7 more
semanticscholar   +1 more source

Magnetically actuated micromechanical tweezers

Sensors and Actuators A: Physical, 2011
Abstract Two planar actuators with magnetic thin films are used for magnetic tweezers. The planar actuators consisting of a pair of a 75 × 0.8 × 0.3 μm 3 silicon oxide beam and a 72 × 13 × 0.3 μm 3 silicon oxide plate deposited with a 65 × 4 × 0.1 μm 3 Ni magnetic thin film are successfully fabricated and successfully gripped to a single NPC-tw01 ...
Yi-Ping Hsieh, Chia-Yi Chen, Zung-Hang Wei, Mei-Feng Lai   +3 more
openaire   +1 more source

Towards the rapid and efficient mixing on 'open-surface' droplet-based microfluidics via magnetic actuation

Sensors and Actuators B: Chemical, 2019
This paper presents a novel approach for automatic, rapid and efficient micro-droplet mixing on ‘open-surface’ droplet-based microfluidics system via magnetic actuation.
Ge Chen, B. Ji, Yibo Gao, Cong Wang, Jinbo Wu, Bingpu Zhou, W. Wen   +6 more
semanticscholar   +1 more source

Self-healing magnetic nanocomposites with robust mechanical properties and high magnetic actuation potential prepared from commodity monomers via graft-from approach

, 2020
Herein, we report the design, synthesis and characterization of self-healing magnetic nanocomposites prepared from readily available commodity monomers. These multi-functional materials demonstrate robust mechanical properties, with a Young's modulus of ...
H. Muradyan, Davoud Mozhdehi, Z. Guan
semanticscholar   +1 more source

Magnetically Actuated Alginate Scaffolds

2021
Artificial tissue presents a novel therapeutic approach for restoring function in severely damaged tissues. Macrophages have a central role in the vascularization and engraftment of implanted artificial tissue constructs. Our laboratory engineered magnetically responsive alginate scaffolds capable of delivering dynamic mechanical cues to scaffold ...
Lindsay Allyson Steele, Boris Polyak, Christian Sell   +2 more
openaire   +1 more source

Modeling and Control of Magnetic Actuation Systems Based on Sensorless Displacement Information

IEEE transactions on industrial electronics (1982. Print), 2019
This paper reveals the design and implementation of a magnetic actuation system (MAS) with noninvasive displacement measurement by current sensing only.
A. Cervera, Ofer Ezra, A. Kuperman, M. Peretz   +3 more
semanticscholar   +1 more source

Magnetic comb drive actuator

2008 IEEE 21st International Conference on Micro Electro Mechanical Systems, 2008
We present the first electromagnetic comb drive actuator which allows for large, linear actuator motion at large air gap widths of 25 mum and a structural height of 400 mum. Previously reported designs require very narrow air gaps of 3 mum at structural heights of up to 1 mm [1] which makes them sensitive to operate, and challenging to fabricate.
Schonhardt, S., Korvink, J. G., Mohr, J., Hollenbach, U., Wallrabe, U.   +4 more
openaire   +2 more sources

Hybrid Tunable Magnet Actuator: Design of a Linearized Force–Flux Tunable Magnet Actuator

IEEE Transactions on Industrial Electronics
Mechatronic Systems ...
William B. Hoekwater, Endre Ronaes, Hassan HosseinNia   +2 more
openaire   +3 more sources

Magnetically actuated, addressable microstructures

Journal of Microelectromechanical Systems, 1997
Surface-micromachined, batch-fabricated structures that combine plated-nickel films with polysilicon mechanical flexures to produce individually addressable, magnetically activated devices have been fabricated and tested. Individual microactuator control has been achieved in two ways: (1) by actuating devices using the magnetic field generated by coils
J.W. Judy, R.S. Muller
openaire   +1 more source