Results 81 to 90 of about 1,562,446 (293)
A force calibration standard for magnetic tweezers
Review of Scientific Instruments, 2014 To study the behavior of biological macromolecules and enzymatic reactions under force, advances in single-molecule force spectroscopy have proven instrumental. Magnetic tweezers form one of the most powerful of these techniques, due to their overall simplicity, non-invasive character, potential for high throughput measurements, and large force range ...
Zhongbo Yu +9 more
openaire +5 more sources
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 +7 more
wiley +1 more source
Magnetic Tweezers Measurement of Single Molecule Torque [PDF]
Nano Letters, 2009 Torsional stress in linear biopolymers such as DNA and chromatin has important consequences for nanoscale biological processes. We have developed a new method to directly measure torque on single molecules. Using a cylindrical magnet, we manipulate a novel probe consisting of a nanorod with a 0.1 microm ferromagnetic segment coupled to a magnetic bead.
Celedon, Alfredo +7 more
openaire +3 more sources
Waveguide Photoactuators: Materials, Fabrication, and Applications
Advanced Robotics Research, EarlyView.Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi +4 more
wiley +1 more source
Trigger factor chaperone acts as a mechanical foldase
Nature Communications, 2017 Proteins fold under mechanical force during co-translational folding at the ribosome. Here, the authors use single molecule magnetic tweezers to study the influence of chaperones on protein folding and show that the ribosomal chaperone trigger factor ...
Shubhasis Haldar +4 more
doaj +1 more source
3D-printed magnetic tweezers for dorsal traction force measurement
BioTechniques, 2018 In this study, economic magnetic tweezers (EMT) with a sharp gradient field were designed and built, in order to facilitate accurate force measurement. Our design costs less than 40 USD and is easy to mount onto most microscope stages.
Matthew Pittman, Yun Chen
doaj +1 more source
Applying torque to the Escherichia coli flagellar motor using magnetic tweezers. [PDF]
Sci Rep, 2017 The bacterial flagellar motor of Escherichia coli is a nanoscale rotary engine essential for bacterial propulsion. Studies on the power output of single motors rely on the measurement of motor torque and rotation under external load. Here, we investigate
van Oene MM +5 more
europepmc +4 more sources
FiN‐Kiri: Fabric‐Based Inflatable Kirigami Actuator for Multimodal Soft Robots
Advanced Robotics Research, EarlyView.This study introduces a type of inflatable fabric‐based kirigami actuator capable of performing bending motion. The actuator is utilized as soft grippers, a crawling robot and a swimming robot. The crawling robot demonstrated extraordinary motion capabilities, such as moving forward, turning and navigating a narrow tunnel.
Yang Yu +12 more
wiley +1 more source
Focused clamping of a single neuronal SNARE complex by complexin under high mechanical tension
Nature Communications, 2018 The SNARE complex enables the fusion of synaptic vesicles with presynaptic membrane via a zippering process that is modulated by the protein complexin, though the precise mechanism remains unclear.
Min Ju Shon, Haesoo Kim, Tae-Young Yoon
doaj +1 more source
Magnetic tweezers for manipulation of magnetic particles in single cells
, 2014 Ebrahimian H, Giesguth M, Dietz K-J, Reiss G, Herth S. Magnetic tweezers for manipulation of magnetic particles in single cells. Applied Physics Letters. 2014;104(6): 63701.Magnetic tweezers gain increasing interest for applications in biology.
Dietz, Karl-Josef +4 more
core +1 more source