Results 61 to 70 of about 6,061 (211)

Development of an axial flux MEMS BLDC micromotor with increased efficiency and power density [PDF]

open access: yes, 2015
This paper presents a rigorous design and optimization of an axial flux microelectromechanical systems (MEMS) brushless dc (BLDC) micromotor with dual rotor improving both efficiency and power density with an external diameter of only around 10 mm.
Christopher Gerada   +10 more
core   +2 more sources

Mg-Based Micromotors with Motion Responsive to Dual Stimuli

open access: yesResearch, 2020
Mg-based micromotors have emerged as an extremely attractive artificial micro/nanodevice, but suffered from uncontrollable propulsion and limited motion lifetime, restricting the fulfillment of complex tasks.
Kang Xiong   +4 more
doaj   +1 more source

Thermometric Based‐Microswimmers with Chemical and Optical Engines

open access: yesAdvanced Intelligent Systems, EarlyView.
Temperature sensing at small scales is typically performed using passive luminescent particles. Here, an alternative approach is demonstrated by integrating upconversion thermometry into self‐propelled microswimmers powered by chemical fuels or light. This strategy offers a step toward dynamic thermal sensing at the microscale, relevant to both lab‐on ...
João M. Gonçalves, Katherine Villa
wiley   +1 more source

Responsive Janus Structural Color Hydrogel Micromotors for Label-Free Multiplex Assays

open access: yesResearch, 2021
Micromotors with self-propelling ability demonstrate great values in highly sensitive analysis. Developing novel micromotors to achieve label-free multiplex assay is particularly intriguing in terms of detection efficiency.
Huan Wang   +4 more
doaj   +1 more source

Routing Optimization of Cable‐Driven Octopus‐Inspired Manipulators With Minimal Actuation via Genetic Algorithm and Finite Element Method

open access: yesAdvanced Intelligent Systems, EarlyView.
Soft robotic arms are promising for gentle grasping but often rely on bulky actuation systems. This work presents a computational design framework that optimizes tendon number and routing to achieve target grasps with fewer actuators. Validated on an octopus‐inspired underwater arm, the approach enables efficient, underactuated soft manipulators for ...
Michele Martini   +6 more
wiley   +1 more source

High-Speed Visual Feedback Control of Miniature Rotating Mirror System Using a Micro Ultrasonic Motor

open access: yesIEEE Access, 2020
We propose a miniature rotating mirror system using a micro-ultrasonic motor that employs a 45° angle mirror as its rotor for enlarging the angle of view of cameras.
Tomoaki Mashimo   +4 more
doaj   +1 more source

Lift Generation by a Miniature Piezoelectric Ultrasonic Motor-Driven Rotary-Wing for Pico Air Vehicles

open access: yesIEEE Access, 2022
Actuators are key components for further miniaturization of insect-scale microrobots. It is challenging to create a new miniature actuator suited for rotary-wing pico aerial vehicles (PAVs), which have a wing span of a few centimeters and a mass of a few
Eric Tan Kai Chiang   +2 more
doaj   +1 more source

Multi‐Responsive Bowl‐Shaped Janus Nanomotors Based on Polyitaconic acid/Polypyrrole on the Surface of Iron Oxide Nanoparticles with Chemical, Electrical, and Magnetic Field Actuation for Targeted Drug Delivery Applications

open access: yesAdvanced NanoBiomed Research, EarlyView.
Bowl‐shaped Janus nanomotors with platinum, iron oxide, and polypyrrole integrate catalytic, magnetic, and electric propulsion for targeted drug delivery. They demonstrate controlled, directional motion under varying pH and hydrogen peroxide conditions, with optimal performance in neutral media.
Kimia Tavakoli Dehaghi   +3 more
wiley   +1 more source

Engineering Active Micro and Nanomotors

open access: yesMicromachines, 2021
Micro- and nanomotors (MNMs) are micro/nanoparticles that can perform autonomous motion in complex fluids driven by different power sources. They have been attracting increasing attention due to their great potential in a variety of applications ranging ...
Mingwei Liu, Kun Zhao
doaj   +1 more source

Recent Progress on Enzyme Immobilization: Materials, Strategies, and Applications

open access: yesFood Bioengineering, EarlyView.
Enzyme immobilization technology has undergone substantial evolution driven by advances in materials science. This review systematically examines the recent advances in enzyme immobilization since 2024, with a focused analysis of five major categories of enzyme carriers including covalent organic framework, metal‐organic frameworks, polymers, carbon ...
Shuran Wang   +7 more
wiley   +1 more source

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