Department of Chemistry Professor Sungho Park’s Research Team Develops 3D Nano Frame Structure Synthesis Technology Using Chemical Carving

- Expected to be Applied on Optics, Sensors, and Biofields Using Nanomaterials

- Selected as the Material Science Field Scientific Journal, ACS Cover Thesis

[Image] Professor Sungho Park

Professor Sungho Park’s research team (Department of Chemistry, first author: combined Master’s & Ph.D. program Jeongwon Kim) developed 3D nano frame synthesis technology that maximizes interaction with light through a new chemical reaction during an aqueous phase.

In the nano-technology field, research about complex structured nanomaterials to control their physical & chemical properties are in progress. Especially, the Top-down nano-fabrication method is employed widely in research, industry which applies photolithography technology to phase-programmed nanofabrication.

Professor Park’s research team controlled the chemical reaction of an aqueous metal elaborately by applying a phase-programmed nanofabrication method suitable to the Bottom-up nanofabrication method. Through this, the team materialized an All-frame-faceted nano frame of maximized structural complexity.

The research team induced reduction, etching reaction selective to octahedral Au nano frame using chemical carving reaction. Moreover, by designing a multi-phased synthesis method, they synthesized a new nano frame that has nano frame particles inherent in eight faces of the octahedron. The synthesized 3D Plasmonic complex nano frame showed a better enhancement factor (~10⁷) of the Enhanced Raman Scattering signal at two laser wavelengths (633nm, 785nm). This provides new potential in the SERS field where Raman signals can be extracted regardless of wavelength band. The research results are expected to have a great contribution to the advancement and commercialization of Raman optical analysis methods.

Professor Park said, “This research will be used widely in Optics, Sensors, and Biofields that use nanomaterials since it provides a new methodology to Bottom-up nano frame technology.”

This study was conducted in 2021 with the support of the National Defense Research Institute (Future National Defense Technology R&D Project) funded by the government (Defense Agency), and the research results are published online in the top-level journal of the materials science field, “ACS Nano” as the cover thesis on April 21^st (Thu).

※ Paper Title: Plasmonic All-Frame-Faceted Octahedral Nanoframes with Eight Engraved Y-Shaped Hot Zones