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Showing 1–5 of 5 results
Advanced filters: Author: CheolGi Kim Clear advanced filters

  • Here, the authors present a pseudo-diamagnetophoresis mattertronic approach for programmable manipulation of label-free cells. Immersed in biocompatible ferrofluids, single cells are moved along linear negative micromagnetic patterns, switched at eclipse diode patterns and stored in potential wells.

    • Sandhya Rani Goudu
    • Hyeonseol Kim
    • CheolGi Kim
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-13

  • Novel magnetophoretic device resembling a spider web network, being integrated with planar Hall resistance sensor, has been developed for the simultaneous concentric transportation and monitoring of superparamagnetic streptavidin-loaded cargos (particles). The multilayer sensor and permalloy network tracks have been fabricated by successive micropatterning processes of film deposition and photolithography. The transporting particles are precisely manipulated on the magnetic tracks towards the sensor by an external magnetic field, where the sensor signal varies with the accumulated particle number. This effective collection and monitoring platform could open novel bioassays overcoming limitation of Brownian transportation of biomolecules to the sensor surface.

    • Byeonghwa Lim
    • Sri Ramulu Torati
    • CheolGi Kim
    ResearchOpen Access
    NPG Asia Materials
    Volume: 9, P: e369

  • One of the main goals of lap-on-a-chip systems is to manipulate single particles with automation of modern-day computer circuits. Lim et al.develop an integrated circuit for transporting magnetic particles with time-varying magnetic fields that can be applied to the parallel analysis of single cells.

    • Byeonghwa Lim
    • Venu Reddy
    • CheolGi Kim
    ResearchOpen Access
    Nature Communications
    Volume: 5, P: 1-10