Direct metal writing and precise positioning of gold nanoparticles within microfluidic channels for SERS sensing of gaseous analytes

• Main Authors: Lee, Mian Rong, Lee, Hiang Kwee, Yang, Yijie, Koh, Charlynn Sher Lin, Lay, Chee Leng, Lee, Yih Hong, Phang, In Yee, Ling, Xing Yi
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2020
• Subjects: Science::Physics; Direct Metal Writing; Two-photon Lithography
• Online Access: https://hdl.handle.net/10356/143409
• Institution: Nanyang Technological University

We demonstrate a one-step precise direct metal writing of well-defined and densely packed gold nanoparticle (AuNP) patterns with tunable physical and optical properties. We achieve this by using two-photon lithography on a Au precursor comprising poly(vinylpyrrolidone) (PVP) and ethylene glycol (EG)...