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Self-Assembled Plasmonic Biosensors

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Biochemistry".

Deadline for manuscript submissions: closed (31 December 2023) | Viewed by 2270

Special Issue Editors


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Guest Editor
Bio-IT Fusion Technology Research Institute, Pusan National University, Busan 46241, Republic of Korea
Interests: biosensors and smart health; brain-inspired biomimetic devices; optical materials and devices; 3D printing; simulations

E-Mail Website
Guest Editor
Bio-IT Fusion Technology Research Institute, Pusan National University, Busan 46241, Republic of Korea
Interests: biosensors and smart health; biomaterials; bioelectronics; bio-engineering; nanomaterials; 3D printing
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Special Issue Information

Dear Colleagues,

Biosensors have demonstrated a potential impact in the prevention and detection of diseases at various stage of diagnosis. Plasmonics, which is the study of the interaction between electromagnetic waves and free electrons in metallic structures, allows for the exhibition of unique properties such as high sensitivity and rapid response times. Significantly, rather than opting for high-cost, long-prevailing, painful diagnostic methods, the focus towards plasmonic biosensors has provided numerous alternative advantages. Of these, the most striking features involving plasmonic biosensors include low manufacturing cost in mass production, high distinguishability rate in detection, selectivity and sensitivity based on material choice, nanoscale plasmonic enhancement, multipurpose sensing capabilities, and so on. Furthermore, combining biomaterial and plasmonic structures draws  fusion research connecting biomedical methods, nanoscale optics, and high-performance sensing. This cross-disciplinary aspect results in excellent biosensing devices, which are helpful for various applications such as environmental care, point-of-care diagnostics, optical sensors, state-of-the-art nanocavity devices, and a few others. By utilizing the light–matter interactions at the nanoscale alongside the combination of biomolecular interactions, it is possible to realize high-quality sensing devices that can tailor next-generation instruments to display excellent detection capability, reliability, selectivity, and distinguishability at an atomic precision level.

In this Special Issue on self-assembled plasmonic biosensors, we expect to publish literature involving  fundamental insights, nanostructure design, and development in the field of using self-assembled optical nanostructures as biosensors. We welcome articles and reviews addressing the multidisciplinary framework which will enhance the plasmonic biosensor literature. The scope will cover but not be limited to the following: plasmonics, numerical simulations of metallic and biomaterial structures,  self-assembly, design and development of sensing devices, surface-enhanced Raman spectroscopy (SERS), surface plasmon resonance (SPR), multiarray sensors, and nanoparticle on mirror platform (NPOM). 

Prof. Dr. Vasanthan Devaraj
Prof. Dr. Jin-Woo Oh
Guest Editors

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Keywords

  • plasmonics
  • metallic nanoparticles
  • biomaterials
  • nano-optics
  • simulations
  • light–matter interactions
  • self-assembly

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Published Papers (1 paper)

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Research

10 pages, 2397 KiB  
Article
Dual-Dewetting Process for Self-Assembled Nanoparticle Clusters in Wafer Scale
by Minjun Kim, Hyun-Ju Ahn, Vanna Chrismas Silalahi, Damun Heo, Samir Adhikari, Yudong Jang, Jongmin Lee and Donghan Lee
Int. J. Mol. Sci. 2023, 24(17), 13102; https://doi.org/10.3390/ijms241713102 - 23 Aug 2023
Cited by 3 | Viewed by 1694
Abstract
Plasmonic molecules, which are geometrically well-defined plasmonic metal nanoparticle clusters, have attracted significant attention due to their enhancement of light–matter interactions owing to a stronger electric field enhancement than that by single particles. High-resolution lithography techniques provide precise positioning of plasmonic nanoparticles, but [...] Read more.
Plasmonic molecules, which are geometrically well-defined plasmonic metal nanoparticle clusters, have attracted significant attention due to their enhancement of light–matter interactions owing to a stronger electric field enhancement than that by single particles. High-resolution lithography techniques provide precise positioning of plasmonic nanoparticles, but their fabrication costs are excessively high. In this study, we propose a lithography-free, self-assembly fabrication method, termed the dual-dewetting process, which allows the control of the size and density of gold nanoparticles. This process involves depositing a gold thin film on a substrate and inducing dewetting through thermal annealing, followed by a second deposition and annealing. The method achieves a uniform distribution of particle size and density, along with increased particle density, across a 6-inch wafer. The superiority of the method is confirmed by a 30-fold increase in the signal intensity of surface-enhanced Raman scattering following the additional dewetting with an 8 nm film, compared to single dewetting alone. Our findings indicate that the dual-dewetting method provides a simple and efficient approach to enable a variety of plasmonic applications through efficient plasmonic molecule large-area fabrication. Full article
(This article belongs to the Special Issue Self-Assembled Plasmonic Biosensors)
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