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Journal articles on the topic 'Ag nanostar'

Author: Grafiati

Published: 1 April 2023

Last updated: 31 July 2025

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1

Petriev, Iliya, Polina Pushankina, Ivan Lutsenko, Nikita Shostak, and Mikhail Baryshev. "Synthesis, Electrocatalytic and Gas Transport Characteristics of Pentagonally Structured Star-Shaped Nanocrystallites of Pd-Ag." Nanomaterials 10, no. 10 (2020): 2081. http://dx.doi.org/10.3390/nano10102081.

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The method of synthesis of bimetallic Pd–Ag pentagonally structured catalyst “nanostar” on the surface of Pd-23%Ag alloy films has been developed. The resulting catalyst was studied as a highly active functional layer for methanol oxidation reaction (MOR) in alkaline media and the intensification of hydrogen transport through the Pd-23%Ag membrane in the processes of hydrogen diffusion purification. A modifying layer with a controlled size, composition and excellent electrocatalytic activity was synthesized by electrochemical deposition at a reduced current density compared to classical method

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2

Garcia-Leis, Adianez, Armida Torreggiani, Jose Vicente Garcia-Ramos, and Santiago Sanchez-Cortes. "Hollow Au/Ag nanostars displaying broad plasmonic resonance and high surface-enhanced Raman sensitivity." Nanoscale 7, no. 32 (2015): 13629–37. http://dx.doi.org/10.1039/c5nr02819a.

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3

Li, Aike, Lijuan Tang, Dan Song, et al. "A SERS-active sensor based on heterogeneous gold nanostar core–silver nanoparticle satellite assemblies for ultrasensitive detection of aflatoxinB1." Nanoscale 8, no. 4 (2016): 1873–78. http://dx.doi.org/10.1039/c5nr08372a.

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4

Wu, Mingzhu, Jianhang Lin, Da Zheng, et al. "Engineering Branched Au@Ag Nanostar Plasmonic Array for Coupling Electromagnetic Enhancement and SERS Trace Detection of Polystyrene in Aquatic Environments." Chemosensors 11, no. 10 (2023): 531. http://dx.doi.org/10.3390/chemosensors11100531.

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Micro/nanoplastics are widespread in the environment and may cause severe damage to creatures and human beings. Micro/nanoplastic pollution has become a global focus issue; hence, the rapid and accurate detection of micro/nanoplastics is an essential step to ensure health. Herein, we report a surface-enhanced Raman scattering (SERS) technique to sensitively and quantitatively identify micro/nanoplastics in environmental water samples. A three-dimensional hierarchical Au@Ag nanostar (NSs) was synthesized and employed as an efficient SERS substrate. The “lightning rod effect” generated by tip br

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5

He, Guangyuan, Xiaoyu Han, Shiyi Cao, Kaimin Cui, Qihang Tian, and Jihong Zhang. "Long Spiky Au-Ag Nanostar Based Fiber Probe for Surface Enhanced Raman Spectroscopy." Materials 15, no. 4 (2022): 1498. http://dx.doi.org/10.3390/ma15041498.

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The detection performances of noble metal-based surface enhanced Raman spectroscopy (SERS) devices are determined by the compositions and geometries of the metal nanostructures, as well as the substrates. In the current study, long spiky Au-Ag alloy nanostars were synthesized, and both core diameters and spike lengths were controlled by Lauryl sulfobetaine concentrations (as the nanostructure growth skeleton). The long spiky star geometries were confirmed by transmission electron micrograph images. Elements energy dispersive spectrometer mapping confirmed that Au and Ag elements were inhomogen

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6

Petriev, I. S., S. N. Bolotin, V. Yu Frolov, and M. G. Baryshev. "Synthesis and gas transport parameters of membranes modified by starshaped nanocrystalline palladium." Доклады Академии наук 486, no. 2 (2019): 163–67. http://dx.doi.org/10.31857/s0869-56524862163-167.

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Methods have been developed to modify the surface of Pd-23%Ag alloy films in order to increase the rate of hydrogen transfer with appearance of palladium coatings of the “nanostar” and “nanopore” types. The gas transport parameters of the membranes which surface is activated using the developed methods were investigated. The modification of surface of Pd-Ag films synthesized by star-like palladium nanocrystallites allows achieving a hydrogen flux density of up to 0.75 mmol / (s × m2) - that is 1.7 times more than in case of modification modified by “nanopore” type coating of sufficiently thin

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7

Wang, Huafeng, Ting Fang, Hua Liu, Tianxiang Wei, and Zhihui Dai. "Gold Nanostar-Based Sensitive Catechol Plasmonic Colorimetric Sensing Platform with Ultra-Wide Detection Range." Chemosensors 10, no. 11 (2022): 439. http://dx.doi.org/10.3390/chemosensors10110439.

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High sensitivity and a wide detection range are always the pursuit of sensor design. In this work, gold nanostars (Au NSs) featuring the shape of sea urchins with an absorption peak at the near infrared region (822 nm) were prepared. We proposed a Au NSs-based plasmonic colorimetric sensing platform for ultrasensitive catechol (CC) detection with a wide detection range from 3.33 nM to 107 μM and a limit of detection (LOD) at 1 nM. The target analyte, CC, was used to reduce silver ions (Ag+) to form silver (Ag) coating on the surface of Au NSs, which caused a blue-shift in the localized surface

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8

Zhao, Yuan, Xiyu Li, Yu Liu, Lichun Zhang, Feifei Wang, and Yalin Lu. "High performance surface-enhanced Raman scattering sensing based on Au nanoparticle-monolayer graphene-Ag nanostar array hybrid system." Sensors and Actuators B: Chemical 247 (August 2017): 850–57. http://dx.doi.org/10.1016/j.snb.2017.03.063.

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9

Deng, Zhiying, Tianyi Wang, Shiyi Cao, et al. "The Fabrication and Detection Performance of High Sensitivity Au-Ag Alloy Nanostar/Paper Flexible Surface Enhanced Raman Spectroscopy Sensors." Journal of Wuhan University of Technology-Mater. Sci. Ed. 39, no. 2 (2024): 436–43. http://dx.doi.org/10.1007/s11595-024-2899-1.

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10

Xi, Zhexu, Robert Nicolas, and Jiayi Wei. "An Edge-Deployable Multi-Modal Nano-Sensor Array Coupled with Deep Learning for Real-Time, Multi-Pollutant Water Quality Monitoring." Water 17, no. 14 (2025): 2065. https://doi.org/10.3390/w17142065.

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Real-time, high-resolution monitoring of chemically diverse water pollutants remains a critical challenge for smart water management. Here, we report a fully integrated, multi-modal nano-sensor array, combining graphene field-effect transistors, Ag/Au-nanostar surface-enhanced Raman spectroscopy substrates, and CdSe/ZnS quantum dot fluorescence, coupled to an edge-deployable CNN-LSTM architecture that fuses raw electrochemical, vibrational, and photoluminescent signals without manual feature engineering. The 45 mm × 20 mm microfluidic manifold enables continuous flow-through sampling, while 8-

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11

Ke, Yan, Bin Chen, Mengen Hu, Ningning Zhou, Zhulin Huang, and Guowen Meng. "In-Situ Monitoring the SERS Spectra of para-Aminothiophenol Adsorbed on Plasmon-Tunable Au@Ag Core–Shell Nanostars." Nanomaterials 12, no. 7 (2022): 1156. http://dx.doi.org/10.3390/nano12071156.

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Plasmon-induced photocatalysis on noble metal surfaces has attracted broad attention due to its application in sunlight energy conversion, while the selectivity of plasmonic platforms remains unclear. Herein, we present the controlled plasmon-mediated oxidation of para-aminothiophenol (p-ATP) by employing Au@Ag core–shell nanostars with tunable tip plasmons in visible–near-infrared range as reactors. In-situ Raman measurements indicate that Au@Ag core–shell nanostars essentially promote the conversion of p-ATP to 4,4′-dimercaptoazobenzene (DMAB) due to hot carriers excited by localized surface

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12

Reyes Gómez, Faustino, Rafael Rubira, Sabrina Camacho, et al. "Surface Plasmon Resonances in Silver Nanostars." Sensors 18, no. 11 (2018): 3821. http://dx.doi.org/10.3390/s18113821.

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The recent development of silver nanostars (Ag-NSs) is promising for improved surface-enhanced sensing and spectroscopy, which may be further exploited if the mechanisms behind the excitation of localized surface plasmon resonances (LSPRs) are identified. Here, we show that LSPRs in Ag-NSs can be obtained with finite-difference time-domain (FDTD) calculations by considering the nanostars as combination of crossed nanorods (Ag-NRs). In particular, we demonstrate that an apparent tail at large wavelengths ( λ ≳ 700 nm) observed in the extinction spectra of Ag-NSs is due to a strong dipolar plasm

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13

Moraes, Beatriz R., Nathalia S. Campos, Alvaro C. C. Barra, and Celly M. S. Izumi. "Surface-Enhanced Raman Scattering of MEH-PPV on Gold and Silver Nanoparticles." Journal of Spectroscopy 2018 (2018): 1–6. http://dx.doi.org/10.1155/2018/6924758.

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The interaction of poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) with Au or Ag nanospheres, Au nanostars, and Ag nanoprisms was investigated using surface-enhanced Raman scattering (SERS). The SERS investigation showed that adsorption of MEH-PPV strongly depends on the nature of the nanoparticle surface. On gold nanostars that present a thick layer of capping polymer, SERS spectrum is only observed in relatively concentrated MEH-PPV solution (1 mmol L−1). On the other hand, Au and Ag nanospheres present SERS spectra down to 10−6 mol L−1 and no chemical interaction of MEH-

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14

Bido, Ariadne T., Britta G. Nordberg, Marit A. Engevik, Nathan C. Lindquist, and Alexandre G. Brolo. "High-Speed Fluctuations in Surface-Enhanced Raman Scattering Intensities from Various Nanostructures." Applied Spectroscopy 74, no. 11 (2020): 1398–406. http://dx.doi.org/10.1177/0003702820940391.

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The observation of single molecule events using surface-enhanced Raman scattering (SERS) is a well-established phenomenon. These events are characterized by strong fluctuations in SERS intensities. High-speed SERS intensity fluctuations (in the microsecond time scale) have been reported for experiments involving single metallic particles. In this work, the high-speed SERS behavior of six different types of nanostructured metal systems (Ag nanoshells, Ag nanostars, Ag aggregated spheres, Au aggregated spheres, particle-on-mirror, and Ag deposited on microspheres) was investigated. All systems d

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15

Kaur, Gagandeep, Swati Tanwar, Vishaldeep Kaur, et al. "Interfacial design of gold/silver core–shell nanostars for plasmon-enhanced photocatalytic coupling of 4-aminothiophenol." Journal of Materials Chemistry C 9, no. 42 (2021): 15284–94. http://dx.doi.org/10.1039/d1tc03733a.

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An interfacial designing procedure is presented for the fabrication of bimetallic hybrid nanomaterials to serve as highly efficient SERS substrate and plasmon driven catalyst for dimerization reaction of PATP utilizing Au/Ag core–shell nanostars.

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16

Revnic, Radu Nicolae, Gabriela Fabiola Știufiuc, Valentin Toma, et al. "Facile Microwave Assisted Synthesis of Silver Nanostars for Ultrasensitive Detection of Biological Analytes by SERS." International Journal of Molecular Sciences 23, no. 15 (2022): 8830. http://dx.doi.org/10.3390/ijms23158830.

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We report a very simple, rapid and reproducible method for the fabrication of anisotropic silver nanostars (AgNS) that can be successfully used as highly efficient SERS substrates for different bioanalytes, even in the case of a near-infra-red (NIR) excitation laser. The nanostars have been synthesized using the chemical reduction of Ag+ ions by trisodium citrate. This is the first research reporting the synthesis of AgNS using only trisodium citrate as a reducing and stabilizing agent. The key elements of this original synthesis procedure are rapid hydrothermal synthesis of silver nanostars f

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17

Kohansal, Fereshteh, Ahmad Mobed, Mohammad Hasanzadeh, Ali Ahmadalipour, and Nasrin Shadjou. "Synthesis, characterization, and application of gold nanostars for the identification of 2-Arachidonoyl glycerol." Medical Journal of Tabriz University of Medical Sciences 44, no. 4 (2022): 290–304. http://dx.doi.org/10.34172/mj.2022.036.

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Background. The endocannabinoid system (ECS) is a complex of neurotransmitters in the central nervous system (CNS) and plays a key role in regulating cognitive and physiological processes. Also, 2-Arachidonoylglycerol (2-AG) is one of the imperative endocannabinoids with key roles in the CNS. It acts as a signaling lipid and activates the cannabinoid CB1 receptor. In addition, 2-AG is involved in a variety of physiological functions such as energy balance, emotion, pain sensation, cognition, and neuroinflammation. Hence, rapid and specific diagnosis of 2-AG is of great importance in medical ne

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18

Liu, Wen, Jun Dong, Yuchong Ren, et al. "Fabrication of plasmonic Au-Ag alloy nanostars for ultrasensitive SERS detection." Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 339 (October 2025): 126208. https://doi.org/10.1016/j.saa.2025.126208.

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19

Grisoli, Pietro, Lorenzo De Vita, Chiara Milanese, et al. "PVA Films with Mixed Silver Nanoparticles and Gold Nanostars for Intrinsic and Photothermal Antibacterial Action." Nanomaterials 11, no. 6 (2021): 1387. http://dx.doi.org/10.3390/nano11061387.

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PVA films with embedded either silver nanoparticles (AgNP), NIR-absorbing photothermal gold nanostars (GNS), or mixed AgNP+GNS were prepared in this research. The optimal conditions to obtain stable AgNP+GNS films with intact, long lasting photothermal GNS were obtained. These require coating of GNS with a thiolated polyethylene glycol (PEG) terminated with a carboxylic acid function, acting as reticulant in the film formation. In the mixed AgNP+GNS films, the total noble metal content is <0.15% w/w and in the Ag films < 0.025% w/w. The slow but prolonged Ag+ release from film-embedded A

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20

Parmigiani, Miriam, Benedetta Albini, Pietro Galinetto, and Angelo Taglietti. "Dual-Mode Sensing of Fe(III) Based on Etching Induced Modulation of Localized Surface Plasmon Resonance and Surface Enhanced Raman Spectroscopy." Nanomaterials 14, no. 18 (2024): 1467. http://dx.doi.org/10.3390/nano14181467.

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Convenient, rapid, highly sensitive and on-site iron determination is important for environmental safety and human health. We developed a sensing system for the detection of Fe(III) in water based on 7-mercapto-4-methylcoumarine (MMC)-stabilized silver-coated gold nanostars (GNS@Ag@MMC), exploiting a redox reaction between the Fe(III) cation and the silver shell of the nanoparticles, which causes a severe transformation of the nanomaterial structure, reverting it to pristine GNSs. This system works by simultaneously monitoring changes in the Localized Surface Plasmon Resonance (LSPR) and Surfa

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21

Parmigiani, Miriam, Benedetta Albini, Giovanni Pellegrini, et al. "Surface-Enhanced Raman Spectroscopy Chips Based on Silver Coated Gold Nanostars." Nanomaterials 12, no. 20 (2022): 3609. http://dx.doi.org/10.3390/nano12203609.

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Surface-enhanced Raman scattering (SERS) is becoming widely used as an analytical tool, and the search for stable and highly responsive SERS substrates able to give ultralow detection of pollutants is a current challenge. In this paper we boosted the SERS response of Gold nanostars (GNS) demonstrating that their coating with a layer of silver having a proper thickness produces a 7-fold increase in SERS signals. Glass supported monolayers of these GNS@Ag were then prepared using simple alcoxyliane chemistry, yielding efficient and reproducible SERS chips, which were tested for the detection of

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22

LI, Manli, Yuan ZHAO, Malin CUI, Chan WANG, and Qijun SONG. "SERS-active Ag Nanostars Substrates for Sensitive Detection of Ethyl Carbamate in Wine." Analytical Sciences 32, no. 7 (2016): 725–28. http://dx.doi.org/10.2116/analsci.32.725.

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23

Tian, Qihang, Shiyi Cao, Guangyuan He, et al. "Plasmonic Au-Ag alloy nanostars based high sensitivity surface enhanced Raman spectroscopy fiber probes." Journal of Alloys and Compounds 900 (April 2022): 163345. http://dx.doi.org/10.1016/j.jallcom.2021.163345.

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24

Rubira, Rafael Jesus Gonçalves, Sabrina Alessio Camacho, Cibely Silva Martin, et al. "Designing Silver Nanoparticles for Detecting Levodopa (3,4-Dihydroxyphenylalanine, L-Dopa) Using Surface-Enhanced Raman Scattering (SERS)." Sensors 20, no. 1 (2019): 15. http://dx.doi.org/10.3390/s20010015.

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Detection of the drug Levodopa (3,4-dihydroxyphenylalanine, L-Dopa) is essential for the medical treatment of several neural disorders, including Parkinson’s disease. In this paper, we employed surface-enhanced Raman scattering (SERS) with three shapes of silver nanoparticles (nanostars, AgNS; nanospheres, AgNP; and nanoplates, AgNPL) to detect L-Dopa in the nanoparticle dispersions. The sensitivity of the L-Dopa SERS signal depended on both nanoparticle shape and L-Dopa concentration. The adsorption mechanisms of L-Dopa on the nanoparticles inferred from a detailed analysis of the Raman spect

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Zhao, Jing, Chen Wu, Lipeng Zhai та ін. "A SERS-based immunoassay for the detection of α-fetoprotein using AuNS@Ag@SiO2core–shell nanostars". Journal of Materials Chemistry C 7, № 27 (2019): 8432–41. http://dx.doi.org/10.1039/c9tc01890e.

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26

Zhu, Jian, Xiao-Hong Chen, Jian-Jun Li, and Jun-Wu Zhao. "The synthesis of Ag-coated tetrapod gold nanostars and the improvement of surface-enhanced Raman scattering." Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 211 (March 2019): 154–65. http://dx.doi.org/10.1016/j.saa.2018.12.001.

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27

Zalaffi, Maria Sole, Lucio Litti, Patrizia Canton, Moreno Meneghetti, Ligia Maria Moretto, and Paolo Ugo. "Preparation and characterization of Ag-nanostars@Au-nanowires hierarchical nanostructures for highly sensitive surface enhanced Raman spectroscopy." Nano Express 1, no. 2 (2020): 020006. http://dx.doi.org/10.1088/2632-959x/aba104.

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28

Li, Jian-Jun, Chen Wu, Jing Zhao, Guo-Jun Weng, Jian Zhu, and Jun-Wu Zhao. "Synthesis and SERS activity of super-multibranched Au Ag nanostructure via silver coating-induced aggregation of nanostars." Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 204 (November 2018): 380–87. http://dx.doi.org/10.1016/j.saa.2018.06.080.

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29

Mariappan, Petchi Raman, Nazar Riswana Barveen, Chih-Chun Chiu, Chih-Yu Kuo, and Yu-Wei Cheng. "Dual enhancement of polyaniline-modified Au-Ag bimetallic nanostars as a flexible SERS substrate for real-time detection." Surfaces and Interfaces 64 (May 2025): 106473. https://doi.org/10.1016/j.surfin.2025.106473.

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30

Ye, Ziwei, Chunchun Li, Maurizio Celentano, et al. "Surfactant-free Synthesis of Spiky Hollow Ag–Au Nanostars with Chemically Exposed Surfaces for Enhanced Catalysis and Single-Particle SERS." JACS Au 2, no. 1 (2021): 178–87. http://dx.doi.org/10.1021/jacsau.1c00462.

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31

Li, Jian-Jun, Xiao-Hong Chen, Guo-Jun Weng, Jian Zhu, and Jun-Wu Zhao. "A highly specific and sensitive fluorescence quenching probe for carcinoembryonic antigen detection based on tetrapod Au nanostars with Ag coating." Materials Today Communications 25 (December 2020): 101373. http://dx.doi.org/10.1016/j.mtcomm.2020.101373.

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32

Zalaffi, Maria Sole, Ines Agostinelli, Najmeh Karimian, and Paolo Ugo. "Ag-Nanostars for the Sensitive SERS Detection of Dyes in Artistic Cross-Sections—Madonna della Misericordia of the National Gallery of Parma: A Case Study." Heritage 3, no. 4 (2020): 1344–59. http://dx.doi.org/10.3390/heritage3040074.

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In historical paintings, the detection of low amounts of pigments and dyes by Raman spectroscopy can sometimes be challenging, in particular for fluorescent dyes. This issue can be overcome by using SERS (surface-enhanced Raman spectroscopy) which takes advantage of the properties of nanostructured metal surfaces to quench fluorescence and enhance Raman signals. In this work, silver nanostars (AgNSs) are applied for the first time to real art samples, in particular to painting cross-sections, exploiting their effective SERS properties for pigment identification. The case study is the Madonna d

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33

Yao, Yao, Tianyu Chen, Wei Mao, et al. "Three-dimensional DNA/Ni-Fe layered double oxide frame networks-induced “cusp-exposure” of Au@Ag nanostars for ultrasensitive determination of kanamycin." Sensors and Actuators B: Chemical 343 (September 2021): 130082. http://dx.doi.org/10.1016/j.snb.2021.130082.

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34

Tran, Vi, Christian Thiel, Jan Taro Svejda, et al. "Probing the SERS brightness of individual Au nanoparticles, hollow Au/Ag nanoshells, Au nanostars and Au core/Au satellite particles: single-particle experiments and computer simulations." Nanoscale 10, no. 46 (2018): 21721–31. http://dx.doi.org/10.1039/c8nr06028b.

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35

Zhao, Wenshi, Shuo Yang, Daxin Zhang, et al. "Multi-dimensional plasmonic coupling system for efficient enrichment and ultrasensitive label-free SERS detection of bilirubin based on graphene oxide-Au nanostars and Au@Ag nanoparticles." Journal of Colloid and Interface Science 646 (September 2023): 872–82. http://dx.doi.org/10.1016/j.jcis.2023.05.117.

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36

Kitaw, Sintayehu Leshe, Yohannis Wondosen Ahmed, Andy Candra, et al. "An advanced plasmonic bimetallic nanostar composite for ultra-sensitive SERS detection of crystal violet." Nanoscale, 2024. http://dx.doi.org/10.1039/d4nr03299c.

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This study presents the synthesis and characterization of Ag/Au nanostar alloys. A 75:25 Ag/Au nanostar alloy achieved the highest SERS sensitivity for rhodamine 6G detection, emphasizing its potential for sensing applications.

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37

Valdivieso, E., M. Zabala, A. Muñoz Noval, et al. "Hyperthermic Core‐Shell Silver‐Gold Nanoparticles: Green Synthesis and Adsorption‐Uptake by Macrophages, Fibroblasts and Cancer Cells." ChemistryOpen, February 19, 2025. https://doi.org/10.1002/open.202400459.

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AbstractGold‐coated silver nanoparticles (Ag@AuNPs) are synthesized by green synthesis using Vaccinium corymbosum as reducing agent. The obtained Ag@AuNPs present a core‐shell structure with nanostar shape. The absorption spectrum of these nanoparticles shows a prominent band centred at 680 nm, within the optimal range for photothermal applications. Dispersions of Ag@AuNPs in water, 1.87 1010 NPs/mL, reach a temperature of 44.3 °C under laser excitation in 10 minutes, which is suitable for hyperthermia therapy. The internalization of Ag@AuNPs, at a concentration of 3 108 NPs/ml, by macrophages

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38

Ramírez, Josué I. García, Marlen D. Méndez Castillo, Erick O. Santos Santiago, et al. "Detection of MB and BSA with Au–Ag nanostar-coated microspheres." MRS Advances, January 29, 2025. https://doi.org/10.1557/s43580-025-01154-6.

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39

katyal, Jyoti, Chhaya Sharma, and Rina Singh. "Aluminum Nano stars with localized surface plasmon resonance and field enhancement." Nanoscience & Nanotechnology-Asia 13 (May 7, 2023). http://dx.doi.org/10.2174/2210681213666230507181111.

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Aim: The Finite Difference Time Domain approach has been used to assess the localised surface plasmon resonance and field enhancement for Al nanostars. The structure's potential as a refractive index sensor has been demonstrated. Background: Research on plasmonics has been possible in a variety of domains, including sensors, SERS, solar cells, and others, due to a tenability in the plasmon wavelength caused by a simple change in shape, size, or external environment. The growth of plasmonics has been greatly aided by the creation of novel ways for creating metallic nanostructures and a large de

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40

Kaur, Vishaldeep, Mridu Sharma, and Tapasi Sen. "DNA Origami-Templated Bimetallic Nanostar Assemblies for Ultra-Sensitive Detection of Dopamine." Frontiers in Chemistry 9 (December 23, 2021). http://dx.doi.org/10.3389/fchem.2021.772267.

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The abundance of hotspots tuned via precise arrangement of coupled plasmonic nanostructures highly boost the surface-enhanced Raman scattering (SERS) signal enhancements, expanding their potential applicability to a diverse range of applications. Herein, nanoscale assembly of Ag coated Au nanostars in dimer and trimer configurations with tunable nanogap was achieved using programmable DNA origami technique. The resulting assemblies were then utilized for SERS-based ultra-sensitive detection of an important neurotransmitter, dopamine. The trimer assemblies were able to detect dopamine with pico

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41

Kaur, Vishaldeep, Swati Tanwar, Gagandeep Kaur, and Tapasi Sen. "DNA‐Origami‐Based Assembly of Au@Ag Nanostar Dimer Nanoantennas for Label‐Free Sensing of Pyocyanin." ChemPhysChem, December 17, 2020. http://dx.doi.org/10.1002/cphc.202000805.

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42

Kaur, Vishaldeep, Charanleen Kaur, and Tapasi Sen. "Single-Molecule Fluorescence Enhancement Based Detection of ATP Using DNA Origami-Assembled Au@Ag Nanostar Optical Antennas." Journal of Physical Chemistry C, April 6, 2023. http://dx.doi.org/10.1021/acs.jpcc.3c00020.

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43

Ellis, Matthew G., Udit Pant, Javier Lou-Franco, Natasha Logan, and Cuong Cao. "Directed Assembly of Au Nanostar@Ag Satellite Nanostructures for SERS-Based Sensing of Hg²⁺ Ions." ACS Applied Nano Materials, June 5, 2023. http://dx.doi.org/10.1021/acsanm.3c01382.

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Leshe Kitaw, Sintayehu, Haile Fentahun Darge, Kefyalew Dagnew Addisu, et al. "Fabrication of Ag nanostar and PEI-based SERS substrate for sensitive and rapid detection of SO2: Application for detection of sulfite residues in beer." Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, July 2023, 123113. http://dx.doi.org/10.1016/j.saa.2023.123113.

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45

Li, Jingwen, Min Liu, Jinyue Zhu, Yunbing Jiao, and Jingbin Zeng. "Ag-coated Au nanostar-Based Lateral Flow Immunoassay for Highly Sensitive Influenza A virus antibody Detection in Colorimetric and Surface-Enhanced Raman Scattering (SERS) modes." Talanta, December 2024, 127351. https://doi.org/10.1016/j.talanta.2024.127351.

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Xing, Haibo, Tong Chen, Yong qian, et al. "Gold-sliver nanostars 2D array composite structure for rapid SERS determination of PAHs." Analytical Methods, 2025. https://doi.org/10.1039/d5ay00285k.

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This study developed a portable multi-ring aromatic hydrocarbons (PAHs) detection tool using a dual-metal surface-enhanced Raman scattering (SERS) substrate. Gold-silver nanostars (AuNS@Ag) were synthesized by a secondary seed-mediated growth method...

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Berlina, Anna N., Maria Y. Ragozina, Nadezhda S. Komova, Kseniya V. Serebrennikova, Anatoly V. Zherdev та Boris B. Dzantiev. "Сomparison of Au, Au-Pt, and Au-Ag nanoparticles as markers for immunochromatographic determination of nonylphenol". Chimica Techno Acta 10, № 1 (2022). http://dx.doi.org/10.15826/chimtech.2023.10.1.03.

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Gold spherical nanoparticles, gold-platinum nanoflowers, and gold-silver nanostars were obtained and compared as labels for immunochromatographic analysis. The nanoparticles were synthesized by chemical reduction from various precursors and then conjugated with staphylococcal protein A to be used in indirect immunochromatographic determination of nonylphenol. The results obtained were evaluated in terms of analytical characteristics and R2 value, as well as the color intensity of the test band. According to the comparison results, it was revealed that the R2 value varied from 0.82 for the gold

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Parmigiani, Miriam, Veronica Schifano, Angelo Taglietti, Pietro Galinetto, and Benedetta Albini. "Increasing gold nanostars SERS response with silver shells: a surface-based seed-growth approach." Nanotechnology, February 2, 2024. http://dx.doi.org/10.1088/1361-6528/ad25c9.

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Abstract A straightforward method to prepare SERS chips containing a monolayer of silver coated gold nanostars (GNS@Ag) grafted on a glass surface is introduced. The synthetic approach is based on a seed growth method performed directly on surface, using GNS as seeds, and involving a green pathway, which only uses silver nitate, ascorbic acid and water, to grow the silver shell. The preparation was optimized to maximize signals obtaining a SERS response of one order of magnitude greater than that from the original GNS based chips, offering in the meantime good homogeneity and acceptable reprod

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Negrín-Montecelo, Yoel, Amir Elsaidy, Jesús Giráldez-Martínez, et al. "Unveiling multimodal hot carrier excitation in plasmonic bimetallic Au@Ag nanostars for photochemistry and SERS sensing." Nano Research, October 26, 2024. http://dx.doi.org/10.1007/s12274-024-6950-5.

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AbstractPlasmonic nanostructures stand at the forefront of nanophotonics research, particularly in sensing and energy conversion applications. Their unique ability to confine light energy at the nanoscale makes them indispensable for a wide array of technological advancements. The study of these structures often makes use of different materials and, even more extensively, explores new shapes and configurations to extend our common repertoire of useful nanophotonics tools. Exploring the creation of bimetallic plasmonic nanostructures combines these two dimensions determining the space of possib

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"Industry Watch." Asia-Pacific Biotech News 11, no. 23n24 (2007): 1534–47. http://dx.doi.org/10.1142/s0219030307001668.

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GlaxoSmithKline and OncoMed Pharmaceuticals Form Strategic Alliance to Develop Cancer Stem Cell Antibody Therapeutics. BioArctic Neuroscience and Eisai Enter Into Exclusive Licensing Agreement with Novel Antibody Treatment for Alzheimer's Disease. Japan Bioventures Today — Japan Animal Referral Medical Center. Agilent Technologies Collaborates with BioNanomatrix to Develop Genetic Analysis System. Eisai Opens Regional Clinical Research Center in Singapore. GE Healthcare and Novavax to Develop and Market Pandemic Infuenza Solution. Nanostart AG Marks Entry into Asia as Lead Investor in Singapor

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