Well-defined assembly of plasmonic metal nanoparticles by dielectrophoresis for highly sensitive SERS-active substrates

In this study, dielectrophoresis (DEP) was performed to develop highly sensitive surface- enhanced Raman scattering (SERS)-active substrates for molecular sensing. Substrates with a circular hole pattern were used, and plasmonic particles were trapped and immobilized along the edges of the pattern using dielectrophoretic forces. The arranged particles created hotspots, resulting in an enhanced SERS signal that was detectable even at concentrations as low as 10<sup>-10</sup> M. This uniform arrangement provided a consistent signal over a large area. In addition, it was experimentally verified that the behavior of the particles varied with pattern diameter. This phenomenon was further supported by theoretical analysis. The proposed DEP-based SERS substrates are expected to be useful in various applications due to their excellent reproducibility and reliability.

Authors

Institutions

Publication Details

Journal
Lab on a Chip
Published
2025-01-01
DOI
https://doi.org/10.1039/d5lc00238a
Citations
1
Primary Topic
Gold and Silver Nanoparticles Synthesis and Applications
Type
article
Field-Weighted Citation Impact
0.43

Funders

Controls
|||
ALL TIME
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
article

Well-defined assembly of plasmonic metal nanoparticles by dielectrophoresis for highly sensitive SERS-active substrates

Gyu Leem, Sunghoon Yoo, Tae Jae Lee, Dong Hwan Nam et al.
1 citations
Lab on a Chip
Gold and Silver Nanoparticles Synthesis and Applications
0.43
article

Well-defined assembly of plasmonic metal nanoparticles by dielectrophoresis for highly sensitive SERS-active substrates

Gyu Leem, Sunghoon Yoo, Tae Jae Lee, Dong Hwan Nam, Jae‐Sung Kwon, Seunghyun Lee, Ha Young Kim, Jae‐Jun Park, Y.C. Yeo
article en
1 citations

Abstract

In this study, dielectrophoresis (DEP) was performed to develop highly sensitive surface- enhanced Raman scattering (SERS)-active substrates for molecular sensing. Substrates with a circular hole pattern were used, and plasmonic particles were trapped and immobilized along the edges of the pattern using dielectrophoretic forces. The arranged particles created hotspots, resulting in an enhanced SERS signal that was detectable even at concentrations as low as 10<sup>-10</sup> M. This uniform arrangement provided a consistent signal over a large area. In addition, it was experimentally verified that the behavior of the particles varied with pattern diameter. This phenomenon was further supported by theoretical analysis. The proposed DEP-based SERS substrates are expected to be useful in various applications due to their excellent reproducibility and reliability.

Lab on a ChipVol. 25(17)
State University of New York (US), Incheon National University (KR), SUNY College of Environmental Science and Forestry (US), York University (US), National NanoFab Center (KR), Hanyang University (KR), Anyang University (KR)
National Research Foundation, Ministry of Trade, Industry and Energy, National Research Foundation of Korea, Gyeonggi-do Regional Research Center, Ministry of Science and ICT, South Korea
Openalex Percentile: Top 42%
Gold and Silver Nanoparticles Synthesis and Applications
0.43
DOIOpen Access PDFOpenAlex
AI Navigator

Ask Laika to Summarize, Analyze, and Connect papers live on the map.

Summarize Papers & Methodologies

Extract key findings, datasets, and comparative methods across publications.

Benchmark Rankings & Visual Analytics

Rank top research institutions, authors, funders, topics, and journals by Field-Weighted Citation Impact (FWCI) and paper volume with instant charts.

Connect Distant Disciplines

Bridge topological clusters on the map to find hidden collaborative intersections.