Microrobot for targeted cell transport system

Hongsoo Choi
Hongsoo Choi
DGIST, Korea
13:10~13:55, November 21st, 2014

Abstract :

Microrobots are being widely studied for biomedical applications such as drug delivery, biopsy, hyperthermia, scaffolding, ablation, etc. Compared to the traditional biomedical devices, microrobots for certain medical applications have numerous potential advantages on non- or minimal invasive treatment, accurate remote control, precise drug delivery just to mention a few examples. In this presentation, I will present novel microrobots for multiple cell transportation by cell seeding and cell encapsulation. Various 3D structures with a magnetic layer were controlled in a 3D space by a magnetic control system. 3D laser lithography was used to fabricate 3D structures and the nickel and titanium were coated as magnetic material and biocompatible material, respectively. For a scaffold type microrobot, it allowed precise control of the size of the pores thus increase the loading capability of the microrobot. For a plunger type microrobot, open and close motions were performed by a container for cell transportation without cell seeding. These studies showed the potential to use microrobots with accurate wireless remote control for multiple cell transportation.

Hongsoo Choi

Figure: a) SEM image of a hexahedral microrobot after cell culture and b) an enlarged SEM image. Filopodia are clearly shown in this enlarged image. Confocal microscope images of the c) hexahedral and d) cylindrical microrobots after staining of the cells.


Research Interests

  • Micro-Electromechanical Systems (MEMS) and Nano- Electromechanical Systems (NEMS) for robotics and biomedicine.
  • micro-robots, micro/nano manipulation, acoustic MEMS transducers, brain-machine interfaces, piezoelectric MEMS, and microfluidics devices.


Awards and Honors

  • 2014 Rising Star Award, International Society for Nano Manipulation, Manufacturing and Measurement (3M-Nano)
  • 2014 Best Post Award, The Korean Society of Mechanical Engineers Spring conference
  • 2013 Best Post Award, The Korean Society of Mechanical Engineers Spring conference
  • 2013 Top 5 Bio Research in Korea, Biological Research Information Center
  • 2012 Distinguished service award, DGIST
  • 2009 Best Post Award, International Symposium on Nature Inspired Technology
  • 2004 Teaching Assistant Excellence Award, Graduate and Professional Student Association, WSU, USA
  • 2004 Outstanding Teaching Assistant Award, MME, WSU, USA
  • 2002-2003 Frank & Genevieve Scholarship, WSU, USA