Advances in Plasmonic Biosensing Technology

A special issue of Biosensors (ISSN 2079-6374). This special issue belongs to the section "Biosensor Materials".

Deadline for manuscript submissions: 31 December 2024 | Viewed by 1892

Special Issue Editor


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Guest Editor
Department of Electrical and Computer Engineering, Rutgers, The State University of New Jersey, New Brunswick, NJ, USA
Interests: nanoplasmonics; photonics; nanostructures and biophotonic materials; label-free; Surface-Enhanced Raman Scattering (SERS) nanoprobes; optical sensing

Special Issue Information

Dear Colleagues,

This Special Issue aims to present cutting-edge methods and instrumentation related to the novel research area of plasmonic-based biosensing technologies and related nanosystems, as well as their applications in biology and medicine. The demand for attainable and affordable healthcare for infectious and chronic diseases has significantly increased in this century. Traditional approaches are expanding to include point-of-care (POC) diagnostics, bedside testing, and community-based approaches responding to these challenges. Advanced plasmonic-based diagnostics features real-time, non-invasive, and label-free characteristics, which is unique. These innovative solutions have been accelerated by recent advances in mobile technologies, nanofabrication technology, imaging systems, and microfluidic technologies.

Both review articles and research articles related to plasmonic-based biosensing technologies are welcome.

Dr. Taerin Chung
Guest Editor

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Keywords

  • properties of metallic nanostructures
  • plasmonics-based sensors
  • surface plasmon resonance (SPR) sensing systems
  • surface-enhanced Raman scattering (SERS) and biomedical applications
  • nano-optics
  • nanophotonics
  • fabrications of nanostructured substrates
  • spectroscopies related to plasmonics
  • single-molecule spectroscopy
  • single-cell analysis metallomics detection using plasmonics
  • metal nanoparticle contrast agents for medical diagnostics
  • metal-enhanced fluorescence MEF
  • quantum plasmonic sensing and imaging

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Published Papers (2 papers)

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Research

8 pages, 1877 KiB  
Communication
Single-Nanoparticle Electrochemical Collision for Monitoring Self-Assembly of Thiol Molecules on Au Nanoparticles
by Yiyan Bai
Biosensors 2024, 14(8), 393; https://doi.org/10.3390/bios14080393 - 15 Aug 2024
Viewed by 724
Abstract
A precise understanding of the self-assembly kinetics of small molecules on nanoparticles (NPs) can give greater control over the size and architecture of the functionalized NPs. Herein, a single-nanoparticle electrochemical collision (SNEC)-based method was developed to monitor the self-assembly processes of 6-mercapto-1-hexanol (6-MCH) [...] Read more.
A precise understanding of the self-assembly kinetics of small molecules on nanoparticles (NPs) can give greater control over the size and architecture of the functionalized NPs. Herein, a single-nanoparticle electrochemical collision (SNEC)-based method was developed to monitor the self-assembly processes of 6-mercapto-1-hexanol (6-MCH) and 1-hexanethiol (MCH) on Au NPs at the single-particle level, and to investigate the self-assembly kinetics exactly. Results showed that the self-assembly processes of both consisted of rapid adsorption and slow recombination. However, the adsorption rate of MCH was significantly lower than that of 6-MCH due to the poorer polarity. Also noteworthy is that the rapid adsorption of 6-MCH on Au NPs conformed to the Langmuir model of diffusion control. Hence, the proposed SNEC-based method could serve as a complementary method to research the self-assembly mechanism of functionalized NPs. Full article
(This article belongs to the Special Issue Advances in Plasmonic Biosensing Technology)
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12 pages, 2575 KiB  
Communication
Thiram Determination in Milk Samples by Surface Plasmon Resonance Based on Molecularly Imprinted Polymers and Sulphur-Doped Titanium Dioxide
by Sezen Harmankaya, Hacı Ahmet Deveci, Ahmet Harmankaya, Fatma Hazan Gül, Necip Atar and Mehmet Lütfi Yola
Biosensors 2024, 14(7), 329; https://doi.org/10.3390/bios14070329 - 3 Jul 2024
Viewed by 903
Abstract
In this work, a new surface plasmon resonance (SPR) sensor based on sulphur-doped titanium dioxide (S-TiO2) nanostructures and molecularly imprinted polymer (MIP) was presented for thiram (THI) determination in milk samples. Firstly, the S-TiO2 nanomaterial with a high product yield [...] Read more.
In this work, a new surface plasmon resonance (SPR) sensor based on sulphur-doped titanium dioxide (S-TiO2) nanostructures and molecularly imprinted polymer (MIP) was presented for thiram (THI) determination in milk samples. Firstly, the S-TiO2 nanomaterial with a high product yield was prepared by using a facile sol-gel hydrolysis technique with a high product yield. After that, UV polymerization was carried out for the preparation of the THI-imprinted SPR chip based on S-TiO2 using a mixture including ethylene glycol dimethacrylate (EGDMA) as the cross-linker, N,N′-azobisisobutyronitrile (AIBN) as the initiator, and methacryloylamidoglutamicacid (MAGA) as the monomer. The reliability of the sensor preparation procedure has been successfully proven by characterization studies of the prepared nanomaterials and SPR chip surfaces through spectroscopic, microscopic, and electrochemical methods. As a result, the prepared SPR sensor showed linearity in the range of 1.0 × 10−9–1.0 × 10−7 M with a detection limit (LOD) of 3.3 × 10−10 M in the real samples, and a sensor technique for THI determination with high sensitivity, repeatability, and selectivity can be included in the literature. Full article
(This article belongs to the Special Issue Advances in Plasmonic Biosensing Technology)
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