Prospects of nano-lithographic tools for the fabrication of surface-enhanced Raman spectroscopy (SERS) substrates

K. Srivastava*, H. Le-The, J. J. A. Lozeman, A. van den Berg, W. van der Stam, M. Odijk

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

Abstract

The previous decades have seen a massive increase in the research towards reproducible and optimized surfaceenhanced Raman spectroscopy (SERS) substrates. While traditional colloidal synthesis methods have commonly been used for SERS substrate fabrication, they lack reproducibility hindering their usage for many applications. The need for reproducible nanostructures showing high orders of enhancement factors has brought about a shift in the methods one can use to fabricate SERS nanostructures. Lithographic techniques have thus piqued the interest of researchers as a viable option for SERS substrate fabrication. Not only do they offer high enhancement factors and reproducible nanostructures, they also provide the ability to fabricate nanostructures with many different geometries, shapes, sizes and periodicities. Some of the most established lithographic techniques include electron beam lithography, nanosphere lithography, laser interference lithography and many more. This review discusses established lithographic techniques, such as mentioned above, along with other upcoming lithographic techniques to understand the principles and the methodology behind them. A deep understanding of how various parameters can influence the nanostructure fabrication and thereby influence the SERS enhancement is developed. A detailed description of how these nanostructures can be fabricated is also provided for better insight. In addition, strengths and limitations of each method are discussed in detail. Lastly, we also discuss the applicability of SERS substrates for commercial applications comparing the performance of chemical synthesis routes and lithography for SERS substrate fabrication. This review serves as a base to understand the concept and application of SERS from a microfabrication perspective.
Original languageEnglish
Article number100267
Number of pages24
JournalMicro and Nano Engineering
Volume23
DOIs
Publication statusPublished - Jun 2024

Keywords

  • Enhancement factor
  • Lithography
  • Nanofabrication
  • Surface -enhanced Raman spectroscopy

Fingerprint

Dive into the research topics of 'Prospects of nano-lithographic tools for the fabrication of surface-enhanced Raman spectroscopy (SERS) substrates'. Together they form a unique fingerprint.

Cite this