Article
Engineering, Biomedical
Debadrita Paria, Annalisa Convertino, Valentina Mussi, Luca Maiolo, Ishan Barman
Summary: A label-free surface-enhanced Raman spectroscopy sensing platform utilizing silver-coated silicon nanowires has been developed to achieve highly sensitive and reproducible quantification of glycated albumin. This technology allows for visual detection of glycated albumin at levels as low as 500 x 10(-9) m, significantly below the physiological range.
ADVANCED HEALTHCARE MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Matthew L. Fitzgerald, Yang Zhao, Zhiliang Pan, Lin Yang, Shihong Lin, Godfrey Sauti, Deyu Li
Summary: This study reports on direct measurements of thermal transport through contacts between silver nanowires (AgNWs) with a poly(vinylpyrrolidone) (PVP) interlayer, showing that a PVP layer as thin as 4 nm can significantly increase the total thermal resistance of the contact. The thermal boundary resistance for PVP/silver interfaces could be significantly lower than that between polymer-carbon nanotubes (CNTs). Analysis based on these understandings further show why AgNWs could be more effective nanofillers than CNTs.
Article
Chemistry, Physical
Mathias Charconnet, Christian Kuttner, Javier Plou, Juan Luis Garcia-Pomar, Agustin Mihi, Luis M. Liz-Marzan, Andreas Seifert
Summary: This study demonstrates the fabrication of superlattices by templated self-assembly of gold nanoparticles on a flexible support, with tunable lattice-plasmon resonances by means of macroscopic strain. It shows that the highest SERS performance is achieved by matching the lattice plasmon mode to the excitation wavelength, by post-assembly fine-tuning of long-range structural parameters. Both asymmetric and symmetric lattice deformations can be used to adapt a single lattice structure to both red-shifted and blue-shifted excitation lines.
Article
Engineering, Electrical & Electronic
Xuanyi Hu, Shang Wang, He Zhang, Yiping Wang, Chunjin Hang, Jiayue Wen, Yanhong Tian
Summary: A high-resolution and low-power flexible heater was fabricated using an electrohydrodynamic printing method, with enhanced heating performance and stability, suitable for wearable electronic applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Youqiao Ma, Jinhua Li, Michael Cada, Yusheng Bian, Zhanghua Han, Yuan Ma, Muddassir Iqbal, Jaromir Pistora
Summary: Efficient techniques for bridging single-plasmon radiations to nanoscale plasmonic waveguides are critical for on-chip integration of solid-state photonic circuits. This study demonstrates the generation and routing of single plasmons in nanowire-based hybrid plasmonic structures with nanodisk antenna resonators, showing enhanced tradeoff between propagation length and mode confinement, outstanding plasmon generation and guiding properties, and robust emission characteristics against emitter positioning imperfections.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2021)
Article
Nanoscience & Nanotechnology
Graham Beaton, Yazan Bdour, Carlos Escobedo, Kevin Stamplecoskie
Summary: Silver nanoparticles (AgNPs) are widely studied for their ability to enhance Raman scattering for chemical sensing. However, the reactivity of silver poses challenges to long-term stability and quantitative reproducibility. AgNPs supported on alumina show robust stability against oxidation and can be manipulated using photochemical methods. These films can be tailored to absorb light in the visible spectrum and exhibit long-term performance as SERS sensors. Optimization parameters are explored, and the films are demonstrated as promising chemical sensors for thiram, with a detection limit of 96 ppb (m/v).
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Rishika Chakraborty, Sutanu Das, Siddheswar Rudra, Arpan Kumar Nayak, Pradip K. K. Maji, Upendranath Nandi, Mukul Pradhan
Summary: In this paper, the authors report on the electrical transport properties of Bi2Se3-AgMnOOH nanocomposite disc prepared by a low temperature solution-phase chemistry method. The structural and morphological analyses of the nanocomposite and pristine Bi2Se3 were comprehensively investigated. The results demonstrate the successful composite fabrication between Bi2Se3, Ag, and γ-MnOOH components. The study also introduces a systematic approach to examine the electrical transport properties in different temperature ranges and identify the transition from Ohmic to non-Ohmic behaviors.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Nanoscience & Nanotechnology
Marie Betker, Constantin Harder, Elisabeth Erbes, Julian Eliah Heger, Alexandros Efraim Alexakis, Benedikt Sochor, Qing Chen, Matthias Schwartzkopf, Volker Koerstgens, Peter Mueller-Buschbaum, Konrad Schneider, Simone Agnes Techert, L. Daniel Soderberg, Stephan V. Roth
Summary: In this study, researchers evaluate the suitability of two types of inks containing silver nanowires for the fabrication of cellulose-based silver nanowire electrodes. The results show that the ink containing cellulose nanofibrils has lower sheet resistance, lower surface roughness, shorter fabrication time, and better mechanical and long-term stability compared to the other type of ink. The mixed ink of silver nanowires and cellulose nanofibrils is found to be suitable for the fast fabrication of highly conductive organic nanoelectronics on an industrial scale.
ACS APPLIED NANO MATERIALS
(2023)
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
Materials Science, Multidisciplinary
Shuangshuang Wang, Jiacheng Yao, Xiaolin Lu, Tao Ding
Summary: This study demonstrates a method of light-induced protrusion of gold nanowires (AuNWs) from a solid state substrate, which enables the on-chip fabrication of functional nanodevices. By irradiating gold ion-doped titanium dioxide (TiO2) films with a laser, AuNWs are grown and their morphology can be tuned by irradiation time/power and ion concentration. Nanopillars can also be generated by introducing Au seeds. The surface-enhanced Raman scattering performance of the AuNW bundles is excellent.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Optics
Iris Baffour Ansah, Sunho Kim, Jun-Yeong Yang, ChaeWon Mun, Ho Sang Jung, Seunghun Lee, Dong-Ho Kim, Shin-Hyun Kim, Sung-Gyu Park
Summary: The encapsulation of Au nanopillar arrays in ultra-thin hydrogel skins protects metal surfaces from macromolecular interference while selectively promoting the penetration of small target molecules. This approach enables direct and highly sensitive detection of specific molecules in complex fluids, showing promise for rapid and affordable on-site analysis and point-of-care testing using SERS.
LASER & PHOTONICS REVIEWS
(2021)
Review
Chemistry, Analytical
Shashank K. Gahlaut, Anisha Pathak, Banshi D. Gupta
Summary: This review highlights the recent developments in silver nanostructured substrates for plasmonic sensing, with a focus on surface plasmon resonance (SPR) and surface-enhanced Raman spectroscopy (SERS). The synthesis methods of silver nanostructured substrates and their applications in various sensing regimes are discussed. Recent literature on silver nanostructures prepared through physical vapor deposition and chemical synthesis routes is critically reviewed for different types of substrates.
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, Physical
Tingting Liu, Qingyou Liu, Ruijin Hong, Chunxian Tao, Qi Wang, Hui Lin, Zhaoxia Han, Dawei Zhang
Summary: The study found that the Cu2O buffer layer can improve the surface quality and crystallinity of the Cu2O-Ag composite films, while an increase in the thickness of the silver layer results in increased absorption intensity and a shift towards the near-infrared region in the spectrum. Raman scattering experiments showed a significant increase in the scattering intensity of the composite films, and FDTD simulations confirmed the electric field enhancement characteristics of the composite structure.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Chemistry, Physical
Puran Pandey, Siela Vongphachanh, Jongwon Yoon, Bokyoung Kim, Chel-Jong Choi, Jung Inn Sohn, Woong-Ki Hong
Summary: This study demonstrated the use of AgNWNF-coated stretchable PDMS substrates as SERS sensors with strong effects. The adhesion strength of AgNWNEs on UVO-treated PDMS substrates was significantly stronger than that of AgNWNFs on untreated PDMS.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
