Results 41 to 50 of about 21,578,474 (331)

Dental And Bone Microtissue Construction Based On Magnetic Nanoparticles

open access: yesInternational Dental Journal
Aim or purpose: Magnetic control technology based on magnetic nanoparticles (MNPs) has improved the efficiency and accuracy of microtissue construction, and shortened the culture time.
Guangzheng Yang
doaj   +1 more source

Physical limits to magnetogenetics

open access: yeseLife, 2016
This is an analysis of how magnetic fields affect biological molecules and cells. It was prompted by a series of prominent reports regarding magnetism in biological systems.
Markus Meister
doaj   +1 more source

Switchable Hyperbolic Metamaterials With Magnetic Control

open access: yes, 2012
A switchable hyperbolic material (SHM) is investigated, with which one can turn on or off the hyperbolic dispersion of the material via magnetic control.
Jiang, Xunya   +3 more
core   +1 more source

Problems on the back of an envelope

open access: yeseLife, 2016
Claims that magnetic fields can be used to manipulate biological systems contradict some basic laws of physics.
Polina Anikeeva, Alan Jasanoff
doaj   +1 more source

A Magnetically Controlled Guidewire Robot System with Steering and Propulsion Capabilities for Vascular Interventional Surgery

open access: yesAdvanced Intelligent Systems, 2023
Magnetically manipulated interventional robotic systems offer outstanding advantages for improving vascular interventions, including minimizing radiation exposure to physicians and increasing the controllability of magnetic interventional devices in hard‐
Shixiong Fu   +12 more
doaj   +1 more source

Singular extremals for the time-optimal control of dissipative spin 1/2 particles

open access: yes, 2010
We consider the time-optimal control by magnetic fields of a spin 1/2 particle in a dissipative environment. This system is used as an illustrative example to show the role of singular extremals in the control of quantum systems. We analyze a simple case
Braun, M.   +4 more
core   +3 more sources

Capsule Endoscopy for Gastric Evaluation

open access: yesDiagnostics, 2021
Wireless capsule endoscopy was first developed to observe the small intestine. A small capsule can be swallowed and images of gastrointestinal tract are taken with natural movement of peristalsis.
Ji-Hyun Kim, Seung-Joo Nam
doaj   +1 more source

Going Hands-Free: MagnetoSuture™ for Untethered Guided Needle Penetration of Human Tissue Ex Vivo

open access: yesRobotics, 2021
The application of force in surgical settings is typically accomplished via physical tethers to the surgical tool. While physical tethers are common and critical, some internal surgical procedures may benefit from a tetherless operation of needles ...
Lamar O. Mair   +11 more
doaj   +1 more source

Magnetic control of large room-temperature polarization

open access: yes, 2009
Numerous authors have referred to room-temperature magnetic switching of large electric polarizations as The Holy Grail of magnetoelectricity.We report this long-sought effect using a new physical process of coupling between magnetic and ferroelectric ...
Ashok Kumar   +25 more
core   +2 more sources

Magnetically-actuated hydrogel-based achiral planar microswimmers for SERS detection: In situ coprecipitation for continuous loading of iron oxide nanoparticles

open access: yesFrontiers in Bioengineering and Biotechnology, 2023
Ultraviolet lithography is a very promising technology used for the batch fabrication of biomedical microswimmers. However, creating microswimmers that can swim at low Reynolds number using biocompatible materials while retaining strong magnetic ...
Junfeng Xiong   +8 more
doaj   +1 more source

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