Abstract Field‐driven transport systems offer great promise for use as biofunctionalized carriers in microrobotics, biomedicine, and cell delivery applications. Despite the construction of artificial microtubules using several micromagnets, which provide a promising pathway synchronous microrobotic to targeted location inside microvascular networks, selective different remains an unexplored challenge. This study demonstrated manipulation microrobotics along patterned micromagnet applied...

Magnetic drug targeting is a delivery approach in which therapeutic magnetizable particles are injected, generally into blood vessels, and magnets then used to guide concentrate them the diseased target organ. Although many analytical, simulation, experimental studies on capturing schemes for have been conducted, there few delivering nanoparticles region. Furthermore, sticking phenomenon of vessels walls near injection point, far from region, has not addressed sufficiently. In this paper,...

Abstract Conventional magnetophoresis techniques for manipulating biocarriers and cells predominantly rely on large‐scale electromagnetic systems, which is a major obstacle to the development of portable miniaturized cell‐on‐chip platforms. Herein, novel magnetic engineering approach by tailoring nanoscale notch disk micromagnet using two‐step optical thermal lithography developed. Versatile manipulations are demonstrated, such as separation trapping, carriers mediating changes in domain...

A stereoscopic particle image velocimetry velocity field measurement technique was used to investigate the flow structure and entrainment rate of a turbulent elliptic jet aspect ratio AR = 2. 3D calibration procedure established compensate for distortion refraction effects embedded in captured images; results this were calculate three orthogonal components. The instantaneous fields components several cross sections perpendicular axis measured spatial distributions statistics obtained by...

A stereoscopic particle image velocimetry (PIV) measurement system based on the translation configuration was developed and applied to flow behind a forward-swept axial-fan with five blades in water tank. The 3D calibration procedure employed compensate distortion refraction of images. perspective error caused by out-of-plane motion estimated direct comparison 2D PIV (SPIV) results. SPIV carried out for images captured simultaneously. difference mean velocity data measured techniques is...

Cell clustering techniques are important to produce artificial cell clusters for in vitro models of intercellular mechanisms at the single-cell level. The analyses considering physical variables such as shape and size cells have been very limited. In addition, precise manipulation control still challenging. this paper, a magnetophoretic device consisting trampoline micromagnet active elements that enable individual selective jumping motion positioning micro-object is proposed. Based on...

The non–isothermal ventilation flow in a 1/10 scale vehicle interior model during compartment heating has been investigated experimentally. Three different modes were used to study their effect on the temperature field variation at same Reynolds number. Instantaneous variations measured by using true colour image processing system and TLC (Thermochromic Liquid Crystal) particles. relationship between hue values of real temperatures was derived advance obtain interior. passenger also...

Abstract The manipulation of superparamagnetic beads has attracted various lab on a chip and magnetic tweezer platforms for separating, sorting, labeling cells bioentities, but the irreversible aggregation owing to interactions limited its actual functionality. Here, an efficient solution is developed disaggregation interparticle distance control with magnetophoretic decoupler using external rotating field. A unique potential energy distribution in form asymmetric thin film around gap...

Abstract Programmable delivery of biological matter is indispensable for the massive arrays individual objects in biochemical and biomedical applications. Although a digital manipulation single cells has been implemented by integrated circuits micromagnetophoretic patterns with current wires, complex fabrication process multiple operation steps restrict its practical application biomolecule arrays. Here, convenient approach using multifarious transit gates proposed, biofunctionalized...

Abstract Functionalized microrobots, which are directionally manipulated in a controlled and precise manner for specific tasks, face challenges. However, magnetic field‐based controls constrain all microrobots to move coordinated manner, limiting their functions independent behaviors. This article presents design principle achieving unidirectional microrobot transport using an asymmetric texture the shape of lateral ladder, authors call “railway track.” An energy distribution along axis...

Microrobots In article number 2305528, Byeonghwa Lim, CheolGi Kim, and co-workers introduced a novel approach to address challenges in controlling functionalized microrobots. By using an asymmetric magnetic texture resembling lateral ladder, termed the "railway-track," precise unidirectional movement is achieved, enabling versatile microrobot manipulation cells-on-chip platform. This concept allows for complex tasks, like targeted collection, controlled transport, local mixing, advancing...

Analysis of changes in particle trajectories due to collision is essential understanding the physical information such as energy or mass exchange during collisions between particles. Most research has studied particles with initial energies a relatively uniform gradient static landscape. However, compared landscape, movement becomes more diverse complex magnetic We designed micro-magnet arrays create landscapes temporal and spatial periodicity. Magnetic draw distinctly different this...

We demonstrate an efficient approach for quantifying frictional forces (sub-piconewton) at nano–bio interfaces by controlled magnetic forces, which is based on simultaneous measurements of critical frequencies streptavidin-coupled particles. The maximum phase angle, being corresponded with the frequency, formulated in terms magnetic, frictional, and viscous particles DNA- SiO2-functionalized micromagnet arrays. streptavidin/DNA interface shows lower friction as enhanced lubrication than...

Conventional micro-particle manipulation technologies have been used for various biomedical applications using dynamics on a plane without vertical movement. In this case, irregular topographic structures surfaces could be factor that causes the failure of intended control. Here, we demonstrated novel colloidal particle mediated by effect generated "micro hill" and "surface gradient" around micro-magnet. The magnetic landscape, matter orbital, created periodically arranged circular...

The ventilation flow in a 1/10-scale model of vehicle interior was investigated experimentally. Five different modes with the same total rate were tested to study effect mode on velocity field compartment. For each mode, more than 450 instantaneous fields measured using PIV (particle image velocimetry) measurement technique. These ensemble averaged obtain spatial distribution mean and vorticity. panel-vent effective foot-vent terms active momentum transfer uniformity speed rear characterised...

The phase-averaged flow characteristics around a forward-swept axial fan model were investigated using two-frame PTV method. velocity fields in the sagittal and planes show clearly periodic variations of structure shedding tip trailing vortices according to blade phase.

We fabricate on-chip micromagnets using Ni <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">80</sub> Fe xmlns:xlink="http://www.w3.org/1999/xlink">20</sub> and Co xmlns:xlink="http://www.w3.org/1999/xlink">70</sub> xmlns:xlink="http://www.w3.org/1999/xlink">30</sub> materials for the characterization of mobility superparamagnetic particles. The maximum velocity particles around periphery is determined by critical frequency, which indicates that...

This paper presents an intuitive interface scheme for controlling a hydraulic backhoe, which is piece of excavating equipment consisting digging bucket on the end two-part articulated arm, and typically mounted rotated back tractor or front loader. The passive levers/joysticks actuator operations backhoe are replaced into electric joysticks with robotic controller, will generate end-effecter command trajectories through joystick rate control in cylindrical coordinate. developed system showed...

A 2-dimensional temperature field measurement technique using PLIF (Planar Laser Induced Fluorescence) was developed and it applied to an axisymmetric buoyant jet. Rhodamine B used as a fluorescent dye. light sheet illuminated two-dimensional cross section of the The intensity variations LIF signal from molecules scattered by laser were captured with optical filter CCD camera. spatial jet derived calibration data between real temperature. measured results show that turbulent is more...