Article
Biochemistry & Molecular Biology
Saltanat B. Ikramova, Zhandos N. Utegulov, Kadyrjan K. Dikhanbayev, Abduzhappar E. Gaipov, Renata R. Nemkayeva, Valery G. Yakunin, Vladimir P. Savinov, Victor Yu Timoshenko
Summary: This study explored the use of silicon nanowires (SiNWs) combined with gold nanoparticles (Au NPs) for surface-enhanced Raman scattering (SERS) of probe molecules. The research found that the filling factor of SiNW arrays controlled the SERS efficiency, with the highest enhancement observed for samples with a porosity of 55%. The results demonstrate the electromagnetic enhancement of SERS through localized surface plasmon resonances in Au-NPs on SiNW surfaces, accompanied by light scattering in the SiNW arrays.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Multidisciplinary
Tomoko Inose, Shuichi Toyouchi, Shinnosuke Hara, Shoji Sugioka, Peter Walke, Rikuto Oyabu, Beatrice Fortuni, Wannes Peeters, Yuki Usami, Kenji Hirai, Steven De Feyter, Hiroshi Uji-i, Yasuhiko Fujita, Hirofumi Tanaka
Summary: Graphene nanoribbons (GNRs) have attracted tremendous attention for their potential in next-generation nanoelectronic devices. The authors recently discovered that unzipping from double-walled carbon nanotubes (DWNTs) can produce crystalline single-layered GNRs (sGNRs) with high yield. By using silver nanowire-based tip-enhanced Raman spectroscopy (TERS), the authors analyzed the single GNRs and found heterogeneity in defect density and edge structure, which provides deeper insights into the structure and reaction mechanism of unzipped GNRs.
Article
Agriculture, Dairy & Animal Science
Siyuan Gao, Jinhui Wu, Hong Wang, Shengying Hu, Li Meng
Summary: A rapid, sensitive, and quantitative detection method for Cronobacter sakazakii in powdered infant formula was developed using a SERS immunochromatographic test strip, with a high linear range and detection sensitivity.
JOURNAL OF DAIRY SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Yanzhao Pang, Mingliang Jin
Summary: A highly aligned AgNW array film was prepared using a self-assembly method, which showed excellent signal reproducibility and detection ability at low concentrations. The uniform distribution of hot spots inside the AgNW substrate amplified the SERS signal.
Article
Chemistry, Multidisciplinary
Goekalp Engin Akinoglu, Eser Metin Akinoglu, Krzysztof Kempa, James Andell Hutchison
Summary: The optical properties of quasi-Babinet complementary arrays were studied, which consist of nanopillar support, metal disks, and hole array film. Strong vertical plasmonic coupling occurs for small separation distances of the plasmonic slabs, resulting in tunable extraordinary transmission and large electric near-field enhancements. The study also shows that these templates are suitable for plasmonic heterostructures commonly used in plasmon-enhanced photocatalysis.
NANOSCALE ADVANCES
(2021)
Article
Chemistry, Analytical
Monica Ricci, Beatrice Fortuni, Raffaele Vitale, Qiang Zhang, Yasuhiko Fujita, Shuichi Toyouchi, Gang Lu, Susana Rocha, Tomoko Inose, Hiroshi Uji-I
Summary: The study introduced the use of silver nanowires as endoscopic probes for detecting intracellular Raman signals and proposed an advanced strategy to significantly enhance their performance. By uniformly forming gold structures on the smooth AgNW surface, high surface-enhanced Raman scattering efficiency was achieved, demonstrating applicability for molecular sensing in cells.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Physical
Sunny Tiwari, Adarsh B. Vasista, Diptabrata Paul, Shailendra K. Chaubey, G. V. Pavan Kumar
Summary: Experimental observation of beaming elastic and surface enhanced Raman scattering (SERS) emission from a bent-nanowire on a mirror (B-NWoM) cavity. The system utilized a self-assembled monolayer of molecules with a well-defined molecular orientation to achieve beaming SERS emission.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Shasha Zhao, Huiliu Wang, Lixin Niu, Wenqi Xiong, Yunxu Chen, Mengqi Zeng, Shengjun Yuan, Lei Fu
Summary: Surface-enhanced Raman scattering (SERS) based on 2D semiconductors has rapidly advanced, and 2D gallium nitride (GaN) with highly polar Ga-N bonds is demonstrated to be a sensitive SERS platform due to strong dipole-dipole interactions and abundant density of states near its Fermi level.
Article
Optics
Yuanyuan Li, Pan Li, Meng Zhang, Dong Wang, Longkun Yang, Zhiqiang Guan, Zhipeng Li
Summary: The polarization of emitted light from nanowire-particle junction is investigated, and it is found that the correlations can be effectively modulated by the particle position and the gap between the nanowire and particle. The polarization behavior can be changed from polarization maintainer to rotator by adjusting the wire-particle gap, and by moving the particle along the wire, the polarization behaviors can be tuned from positive to negative correlation. These findings are explained by the hybridization of wire-particle coupled mode and propagating surface plasmon polariton modes.
Article
Chemistry, Inorganic & Nuclear
Heeyoel Baek, Takuma Sato, Yasuhiro Uozumi, Yoichi M. A. Yamada
Summary: Highly reusable and active silicon-nanowire-array-stabilized metal-nanoparticle (SiNA-MNP) catalysts have been prepared for effective hydrogenation under mild conditions. Monometallic and bimetallic nanoalloy catalysts were synthesized without the need for a reducing agent or other external factors, showing robust stability and high reusability. Characterization of the catalysts was conducted using various techniques, and the catalytic activity was evaluated through hydrogenation of trans-stilbene in a hydrogen atmosphere.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2021)
Article
Physics, Applied
Hui Xia, Yaqian Liu, Hailu Wang, Tianxin Li, Zhongying Tong, Xiren Chen, Pingping Chen, Weida Hu, Wei Lu
Summary: A feasible route to balance the electric gain and the light absorption efficiency in semiconductor nanowire array has been discovered by injecting photocarriers in the opposite direction, which activates the photoconductive gain to the maximum degree. Experimental results show a high responsivity and bias-voltage control for different working modes.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Physical
Puran Pandey, Kihoon Shin, A-Rang Jang, Min-Kyu Seo, Woong-Ki Hong, Jung Inn Sohn
Summary: This study demonstrates highly sensitive multiplex-detection of organic dyes using SERS substrates with self-assembly arrays of porous AuAg alloy (p-AuAg) NPs, showing excellent enhancement, reproducibility, and detection limits. The high-density built-in and inter nanogaps in the self-assembly arrays of p-AuAg NPs contribute to the significant enhancement of electromagnetic field, supporting potential pathways for practical SERS applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Manh Cuong Nguyen, Truc Quynh Ngan Luong, Thi Thu Vu, Cao Tuan Anh, Tran Cao Dao
Summary: This study focuses on the synthesis of wool roll-like silver nanoflowers (AgNFs) using a mixed ethanol/water solution, which reduces the size of AgNFs and enhances the SERS substrate. The smaller size of AgNFs leads to higher intensity of characteristic bands in SERS spectrum of carbendazim (CBZ), allowing for detection at lower concentrations.
Article
Chemistry, Physical
Xinqiao Teng, Mengyuan Wei, Wencai Yi, Junfang Li, Meng Yin, Guangcheng Xi
Summary: A general polymerization-induced strategy is developed for the synthesis of large-area transition metal nitride (TMN) porous arrays with high specific surface area. The TiN porous arrays exhibit intense blue-light localized surface plasmon resonance and remarkable surface-enhanced Raman scattering (SERS) effects. They also show ultrahigh corrosion and oxidation resistance, suggesting the possibility of using TiN as a cheaper alternative to commercial Au substrates for effective SERS substrates.
Article
Materials Science, Multidisciplinary
Si-Zhe Sheng, Shi-Qiao Zheng, Xue-Fei Feng, Ling-Ran Zhou, Zhen-Chao Tao, Jian-Wei Liu
Summary: This study provides a new strategy for assembling ordered structures of gold nanoparticles using highly ordered nanowire templates to explore the ordering effect on SERS performance. The highly ordered gold nanoparticle arrays show improved detection limit and enhancement factor compared to disordered gold particles.
ADVANCED OPTICAL MATERIALS
(2023)