A research institute specializing in Materials Science

Surface Materials Division

Department of Nano-Bio Convergence

Head of Department
Park, Seong-gyu

Department Introduction

Based on innovative non-lithographic self-nanostructuring process and functional nanomaterials, Advanced Nano-Surface Department is aiming to find killer applications in environmental, display and bio-industries. Current main research activities cover development of non-lithographic self-nanostructuring process of polymer substrate and SERS-based chemical/biological sensors, flexible transparent electrodes, and functional nanostructured surface for improving the light extraction and anti-reflective efficiency.


Major Activities

Development of molecular sensing nanostructured substrate: 3 papers published, 4 patent registered, 6 patents applied.
Development of flexible transparent electrode: 1 US patent registered, 6 papers published, 2 patents applied.
Fabrication of ultrathin metal film-based flexible transparent conducting electrodes: 2 papers published, 1 patent registered, 2 patents applied.
Development of polymer surface self-nano-structuring technology using linear ion beam roll-to-roll process: 1 paper published, 4 patent registered, 5 patents applied.

Major Research Area

Development of highly sensitive and reproducible SERS substrates
Development of highly transparent and low resistant transparent electrode using flexible silver nanowire
Development of polymer self-nanostructuring technology using linear ion beam roll-to-roll process
Development of coating technologies of noble metal ultrathin films and their optoelectronic applications
Development of functional nanostructured surface for improving the light extraction and anti-reflective efficiency

Future Research Plan

  • Development of new alloys and their manufacturing technologies for precision tooling of high-strength materials
  • Development of next generation electronic device application technology using flexible silver nanowire
  • Fabrication of noble metal nanostrucutures and ultrathin films applicable to state-of-the art optoelectronic devices
  • Development of ion beam roll-to-roll process for light extraction and anti-reflective polymer film

Major R&D Activities

Development of highly sensitive plasmonic nanopillar array for molecular spectroscopic sensors


  • Molecular concentration at plasmonic nanogaps using a high aspect ratio plasmonic nanopillar array with a controlled surface energy

[Content of the technique & outcomes]

  • Development of innovative non-lithographic nanopillar generation process by Ar plasma treatment of polymer film
  • Development of highly sensitive SERS substrate by capillary force-induced clustering of high aspect ratio plasmonic nanopillars
  • 1 papent registered and 1 paper published in high impact journal

Development of flexible transparent conducting electrodes based on ultrathin metal films

  • Growth mode controls of highly conductive Ag and Cu metal thin films by precisely controlled reactive sputtering processes
  • Fabrication of highly transparent, conductive flexible electrodes based on sub 10 nm-thick continuous 2D metal films and their applications to flexible optoelectronic devices

Material & process evaluations for roll-to-roll process of transparent conductive flexible substrate with light extraction function

  • Development of optical extraction layer formation technology on transparent conductive flexible substrate surface using polymer surface self-nano-structuring technology
  • Improvement of current efficiency of small area (<1cm2) OLED devices using light extraction functional transparent conductive substrate
  • Evaluations of printing, transfer, and material for the roll-to-roll manufacturing of transparent conductive flexible substrate with light extraction function integration