A facile approach for growing Ag nano-dendrites employing towards E. coli cells monitoring using SERS: a proof-of-concept study

被引：1

作者：

Murugan, Dhatchayani ^{[1
]}

Diwan, Aarti ^{[1
]}

Chithravel, Akila ^{[1
]}

Shekhawat, Abhishek S. ^{[1
]}

Singh, Neetika ^{[2
]}

Lakkakula, Satish ^{[3
]}

Gowrishankar, Shanmugaraj ^{[4
]}

Srivastava, Tulika ^{[5
]}

Saxena, Shailendra K. ^{[1
]}

Shrivastav, Anand M. ^{[1
]}

机构：

[1] SRM Inst Sci & Technol, Coll Engn & Technol, Dept Phys & Nanotechnol, Kattankulathur 603203, India

[2] Univ Georgia, Dept Phys & Astron, Athens, GA 30602 USA

[3] CSIR Cent Salt & Marine Chem Res Inst, Appl Phycol & Biotechnol Div, Marine Algal Res Stn, Mandapam 623519, Tamil Nadu, India

[4] Alagappa Univ, Dept Biotechnol, Sci Campus, Karaikkudi 630003, Tamil Nadu, India

[5] SRM Inst Sci & Technol, Dept Elect & Commun, Chennai 603203, India

来源：

NANO EXPRESS | 2024年 / 5卷 / 04期

关键词：

Ag dendrites; localized SPR; SERS; biosensors; E; Coli; GALVANIC REPLACEMENT SYNTHESIS; RAMAN-SCATTERING; ELECTROLESS DEPOSITION; PHOTOVOLTAIC CELLS; SILICON NANOWIRES; SILVER; GROWTH; NANOSTRUCTURES; NANOPARTICLES; BACTERIA;

D O I：

10.1088/2632-959X/ad8466

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Here, a highly efficient and inexpensive technique to fabricate silver dendritic nanostructures with unique numerous lateral branches has been demonstrated. The study utilized the metal-assisted growth (MAG) technique, which is a simple, one-step technique that allows exact control over the size and morphology of the generated dendrites. The prepared dendrites are characterized using various techniques and the fabrication mechanism is well explored. The final synthesized Ag dendrites are then utilized to detect in-house cultured E. coli. cells using surface-enhanced Raman scattering (SERS) activity. The proposed reason for their superior SERS performance is due to the contribution from the large amount of plasmon-active 'hotspots' present in dendritic structures at the sharp edges enhancing the nearby local electromagnetic fields. The proposed work suggests Ag dendritic nanostructures as a potential candidate for SERS-based applications.

引用

页数：8