Results 71 to 80 of about 7,440 (224)

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

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

Improving the engine power of a catalytic Janus-sphere micromotor by roughening its surface [PDF]

open access: yes, 2018
Microspheres with catalytic caps have become a popular model system for studying self-propelled colloids. Existing experimental studies involve predominantly "smooth" particle surfaces.
Bon, Stefan Antonius Franciscus   +1 more
core   +2 more sources

Microelectromechanical system‐based devices for the diagnosis, treatment, and monitoring of ophthalmic diseases

open access: yesInterdisciplinary Medicine, EarlyView.
Due to the characteristics of miniaturization, high sensing performance, integration, and high comfort, MEMS‐based devices were employed to design sensors, imaging systems, drug delivery systems, retinal prosthesis, surgical tools, and wearable products for the ophthalmic disease diagnosis, treatment, and monitoring.
Yaling Peng   +10 more
wiley   +1 more source

Effect of rotary cutting instruments on the resin-tooth interfacial ultra structure: an in vivo study [PDF]

open access: yes, 2014
Objectives: To evaluate the effect of cutting teeth with different types of burs at various speeds on surface topogra - phy of tooth surface and interfacial gap formation at resin-tooth interface.
Duhan, Jigyasa   +4 more
core   +1 more source

The scale matters: A review on stimuli‐responsive microrobots categorized by scale for biomedical applications

open access: yesResponsive Materials, EarlyView.
We systematically summarize how each scale dictates fundamental choices in design feature, manufacturing technology, driving mechanism, and control strategy, which are inherently governed by scale‐dominated physical principles. Furthermore, the application of scale‐determined operation modes of microrobots across different stages of medical ...
Hang Yin   +3 more
wiley   +1 more source

An Omnidirectional Mobile Millimeters Size Micro-Robot with Novel Duel-Wheels

open access: yesInternational Journal of Advanced Robotic Systems, 2008
A millimeters size omni-directional mobile micro-robot is presented in this paper. A unique duel-wheel structure is designed for no-slip motion during the steering, by turning the slip friction between the wheel and ground into rolling friction.
Chen Zhang   +3 more
doaj  

Ionogel Actuators: A Review

open access: yesSmartBot, EarlyView.
Ionogels dynamically and functionally couple ionic liquids with polymer networks, enabling multiscale programmable deformation and motion under electrical, magnetic, optical, thermal, humidity, and chemical stimuli. This article systematically elucidates the constituent components, structural design, and multiscale actuation mechanisms of ionogel ...
Dezhou Cao   +5 more
wiley   +1 more source

Gnat Robots (And How They Will Change Robotics) [PDF]

open access: yes, 1987
A new concept in mobile robots is proposed, namely that of a gnat-sized autonomous robot with on-board sensors, brains, actuators and power supplies, all fabricated on a single piece of silicon.
Flynn, A. M.
core  

Shaping Function: Polymeric 3D Systems With Unconventional Geometries for Biomedical Applications

open access: yesSmall, EarlyView.
Particle shape is a key design parameter governing biological interactions. Advances in fabrication enable precise control over anisotropy and compartmentalization, allowing modulation of cellular uptake, transport, and biodistribution, ultimately enhancing therapeutic performance. ABSTRACT Polymer geometry is a primary determinant of physical behavior
Francisca G. Perfeito   +2 more
wiley   +1 more source

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