SERS performance of GaN/Ag substrates fabricated by Ag coating of GaN platforms

• Magdalena A. Zając,
• Bogusław Budner,
• Malwina Liszewska,
• Bartosz Bartosewicz,
• Łukasz Gutowski,
• Jan L. Weyher and
• Bartłomiej J. Jankiewicz

Beilstein J. Nanotechnol. 2023, 14, 552–564, doi:10.3762/bjnano.14.46

• growth rate of the Ag layer per laser pulse, affecting the size and shape of the formed silver nanostructures. Only the number of laser pulses was changed to obtain Ag layers of different thicknesses, and the temperature of the substrates was varied to change the morphology of the deposited Ag layers (RT

Quercetin- and caffeic acid-functionalized chitosan-capped colloidal silver nanoparticles: one-pot synthesis, characterization, and anticancer and antibacterial activities

• Akif Hakan Kurt,
• Elif Berna Olutas,
• Fatma Avcioglu,
• Hamza Karakuş,
• Mehmet Ali Sungur,
• Cansu Kara Oztabag and
• Muhammet Yıldırım

Beilstein J. Nanotechnol. 2023, 14, 362–376, doi:10.3762/bjnano.14.31

• at the higher energy side of the SPR peak of the Ch/CA-Ag NPs while its absorption tail overlaps with that of the SPR peak. These partial matches in the absorption features might be due to the molecular interactions between caffeic acid and chitosan/silver nanostructures [63]. FTIR spectroscopy

Modification of a SERS-active Ag surface to promote adsorption of charged analytes: effect of Cu²⁺ ions

• Bahdan V. Ranishenka,
• Andrei Yu. Panarin,
• Irina A. Chelnokova,
• Sergei N. Terekhov,
• Peter Mojzes and
• Vadim V. Shmanai

Beilstein J. Nanotechnol. 2021, 12, 902–912, doi:10.3762/bjnano.12.67

• the analyte leads to a good SERS signal. Results and Discussion Characterization of silver nanostructures We synthesized Ag NPs with a size appropriate for SERS investigations (30–35 nm) with a relatively high NP concentration (32 µg/mL) sufficient for good immobilization. Size and shape of the NPs

• Information File 84: Characterization of silver nanostructures. Funding This work has been supported by the Government Research Program “Photonics, Opto- and Microelectronics 1.4.01”. Participation of P. M. in this study was supported by the Czech Science Foundation (Grant 18-10897S).

High-yield synthesis of silver nanowires for transparent conducting PET films

• Gul Naz,
• Hafsa Asghar,
• Muhammad Ramzan,
• Muhammad Arshad,
• Rashid Ahmed,
• Muhammad Bilal Tahir,
• Bakhtiar Ul Haq,
• Nadeem Baig and
• Junaid Jalil

Beilstein J. Nanotechnol. 2021, 12, 624–632, doi:10.3762/bjnano.12.51

• circuit including a white LED was utilized. Results and Discussion To determine the morphology, the as-prepared silver nanostructures were first characterized by UV–vis absorption spectroscopy. The absorption spectrum of AgNWs is a function of the dielectric material, the chemicals used, and the particle

• results. The photoluminescence spectra of silver nanostructures greatly depend on size and shape of the nanostructures. The PL spectrum in the visible region is associated with deep holes. These deep holes cause green, red, and yellow emissions, whereas shallow holes produce blue and violet emissions

A review on nanostructured silver as a basic ingredient in medicine: physicochemical parameters and characterization

• Gabriel M. Misirli,
• Kishore Sridharan and
• Shirley M. P. Abrantes

Beilstein J. Nanotechnol. 2021, 12, 440–461, doi:10.3762/bjnano.12.36

A review on the green and sustainable synthesis of silver nanoparticles and one-dimensional silver nanostructures

• Sina Kaabipour and
• Shohreh Hemmati

Beilstein J. Nanotechnol. 2021, 12, 102–136, doi:10.3762/bjnano.12.9

• Sina Kaabipour Shohreh Hemmati School of Chemical Engineering, Oklahoma State University, Stillwater, Oklahoma, 74078, USA 10.3762/bjnano.12.9 Abstract The significance of silver nanostructures has been growing considerably, thanks to their ubiquitous presence in numerous applications, including

• but not limited to renewable energy, electronics, biosensors, wastewater treatment, medicine, and clinical equipment. The properties of silver nanostructures, such as size, size distribution, and morphology, are strongly dependent on synthesis process conditions such as the process type, equipment

• type, reagent type, precursor concentration, temperature, process duration, and pH. Physical and chemical methods have been among the most common methods to synthesize silver nanostructures; however, they possess substantial disadvantages and short-comings, especially compared to green synthesis

A silver-nanoparticle/cellulose-nanofiber composite as a highly effective substrate for surface-enhanced Raman spectroscopy

• Yongxin Lu,
• Yan Luo,
• Zehao Lin and
• Jianguo Huang

Beilstein J. Nanotechnol. 2019, 10, 1270–1279, doi:10.3762/bjnano.10.126

• nanoparticles of the Ag-NP/cellulose-NF–C substrate was conducted by employing the RF module of Comsol Multiphysics, and the parameters adopted were based on the silver nanostructures from the FE-SEM observation, together with the excitation at 514 nm. The optical constants of metallic silver were acquired from

Revisiting semicontinuous silver films as surface-enhanced Raman spectroscopy substrates

• Malwina Liszewska,
• Bogusław Budner,
• Małgorzata Norek,
• Bartłomiej J. Jankiewicz and
• Piotr Nyga

Beilstein J. Nanotechnol. 2019, 10, 1048–1055, doi:10.3762/bjnano.10.105

• -ATP on the silver nanostructures we immersed the SSF substrates into 10 mM ethanol solution of 4-ATP for 1 hour. Longer incubation times did not result in SERS signal increase. The excess 4-ATP molecules were removed by rinsing the SSF samples with ethanol. The solvent was allowed to evaporate slowly

• not show the fine structure of the SSF. In order to visualize the height and morphology of silver nanostructures we performed AFM scans of relatively small areas of SSFs (Figure 2). The AFM data in Figure 2 corresponds well with the SEM images presented in Figure 1. The size of particles increases for

Fabrication of silver nanoisland films by pulsed laser deposition for surface-enhanced Raman spectroscopy

• Bogusław Budner,
• Mariusz Kuźma,
• Barbara Nasiłowska,
• Bartosz Bartosewicz,
• Malwina Liszewska and
• Bartłomiej J. Jankiewicz

Beilstein J. Nanotechnol. 2019, 10, 882–893, doi:10.3762/bjnano.10.89

• 1446 for sample E. When we compare this data with the SEM images (Figure 2), an increase in the average peak intensity is correlated with the increase in the size of the silver nanostructures, until the connection of silver nanoislands into one structure occurs. With the increase in the size of the

Controlling surface morphology and sensitivity of granular and porous silver films for surface-enhanced Raman scattering, SERS

• Sherif Okeil and
• Jörg J. Schneider

Beilstein J. Nanotechnol. 2018, 9, 2813–2831, doi:10.3762/bjnano.9.263

• obtain porous silver nanostructures [12]. Other routes include the use of gold or silver nanoparticles of different shapes in solution and their assembly on a solid substrate [6][13][14][15][16][17], nanosphere lithography [18][19][20][21][22][23][24][25] as well as nanolithography and nanoimprinting [26

• the reflexes of elemental silver without any traces of silver oxide (Figure S18, Supporting Information File 1). Comparison of the XRD of the silver nanostructures resulting from oxidation/reduction of silver films with as-sputtered silver films shows a variation of the preferential orientation of the

• silver crystallites in the films. With the systematic combination of oxidizing and reducing rf plasmas and a variation of the different plasma parameters, complex 3D silver nanostructures with tunable surface roughness and nanoporosity can be obtained. Optical behavior and surface wetting of differently

The role of adatoms in chloride-activated colloidal silver nanoparticles for surface-enhanced Raman scattering enhancement

• Nicolae Leopold,
• Andrei Stefancu,
• Krisztian Herman,
• István Sz. Tódor,
• Stefania D. Iancu,
• Vlad Moisoiu and
• Loredana F. Leopold

Beilstein J. Nanotechnol. 2018, 9, 2236–2247, doi:10.3762/bjnano.9.208

• , indicating a high polydispersity of the formed silver nanostructures. Simultaneously, a decrease in the intensity of the AgCl absorption band at 254 nm is observed, whereby the intensity of the AgCl band is then comparable to that of the plasmonic band. However, after 5 min of light exposure, the plasmon

Towards the third dimension in direct electron beam writing of silver

• Katja Höflich,
• Jakub Mateusz Jurczyk,
• Katarzyna Madajska,
• Maximilian Götz,
• Luisa Berger,
• Carlos Guerra-Nuñez,
• Caspar Haverkamp,
• Iwona Szymanska and
• Ivo Utke

Beilstein J. Nanotechnol. 2018, 9, 842–849, doi:10.3762/bjnano.9.78

• silver nanostructures could be achieved. To address these issues AgO2Me2Bu was compared to another carboxylate compound. Silver pentafluoropropionate [Ag(µ-O2CC2F5)]2 (AgO2F5Prop) provides for a similar evaporation temperature and electron-beam sensitivity but also for slightly higher gas flux and

• . While a full interpretation of these results, e.g., in terms of enhanced diffusion and less surface poisoning requires further experimental evidence, they are extremely promising in view of a fabrication of silver nanostructures using AgO2F5Prop. The SEM images in Figure 3a–c show the results of

Fixation mechanisms of nanoparticles on substrates by electron beam irradiation

• Daichi Morioka,
• Tomohiro Nose,
• Taiki Chikuta,
• Kazutaka Mitsuishi and
• Masayuki Shimojo

Beilstein J. Nanotechnol. 2017, 8, 1523–1529, doi:10.3762/bjnano.8.153

• particular, arrays of gold or silver nanostructures can be used for such waveguides, as nanostructures made of these materials interact with visible light. Such LSPR structures would make the development of smaller optical circuits and devices possible. Plasmon propagation through nanowires or rows of

Optical response of heterogeneous polymer layers containing silver nanostructures

• Miriam Carlberg,
• Florent Pourcin,
• Olivier Margeat,
• Judikaël Le Rouzo,
• Gérard Berginc,
• Rose-Marie Sauvage,
• Jörg Ackermann and
• Ludovic Escoubas

Beilstein J. Nanotechnol. 2017, 8, 1065–1072, doi:10.3762/bjnano.8.108

• /MRIS, 75015 Paris, France 10.3762/bjnano.8.108 Abstract This work is focused on the study of the optical properties of silver nanostructures embedded in a polymer host matrix. The introduction of silver nanostructures in polymer thin films is assumed to result in layers having adaptable optical

Templated green synthesis of plasmonic silver nanoparticles in onion epidermal cells suitable for surface-enhanced Raman and hyper-Raman scattering

• Marta Espina Palanco,
• Klaus Bo Mogensen,
• Marina Gühlke,
• Zsuzsanna Heiner,
• Janina Kneipp and
• Katrin Kneipp

Beilstein J. Nanotechnol. 2016, 7, 834–840, doi:10.3762/bjnano.7.75

• environment supports the generation of silver nanostructures in two ways. The plant tissue delivers reducing chemicals for the initial formation of small silver clusters and their following conversion to plasmonic particles. Additionally, the natural morphological structures of the onion layers, in particular

• evidence of the capability of the “green” silver nanostructures to enhance one- and two-photon-excited optical processes. Experimental Sample preparation A single cell layer of a red onion, purchased from the supermarket, was peeled from fresh vegetables and pieces of about 1 cm2 were placed in an aqueous

• onion layer described above is an indicator that plasmonic silver nanoparticles have formed, including also the formation of aggregates. Dark field microscopy provides more detailed spatial information about where these silver nanostructures exist. The red glowing of the extracellular matrix of the

Controlled graphene oxide assembly on silver nanocube monolayers for SERS detection: dependence on nanocube packing procedure

• Martina Banchelli,
• Bruno Tiribilli,
• Roberto Pini,
• Luigi Dei,
• Paolo Matteini and
• Gabriella Caminati

Beilstein J. Nanotechnol. 2016, 7, 9–21, doi:10.3762/bjnano.7.2

• areas. On the other hand, AgNCs are more homogeneously dispersed over the entire sensor surface when the nanocubes spontaneously adsorb from solution. In this case, the assembly results in less-packed silver nanostructures with higher inter-cube distance. For the two assembled substrates, AFM of silver

Green preparation and spectroscopic characterization of plasmonic silver nanoparticles using fruits as reducing agents

• Jes Ærøe Hyllested,
• Marta Espina Palanco,
• Nicolai Hagen,
• Klaus Bo Mogensen and
• Katrin Kneipp

Beilstein J. Nanotechnol. 2015, 6, 293–299, doi:10.3762/bjnano.6.27

• surface-enhanced emission of individual single emitters on the surface of plasmonic silver nanoparticles. Supporting Information File 16: Fluctuations in the luminescent light collected from green silver nanostructures (real time movie). Acknowledgements This work was performed in the context of the

Probing the plasmonic near-field by one- and two-photon excited surface enhanced Raman scattering

• Katrin Kneipp and
• Harald Kneipp

Beilstein J. Nanotechnol. 2013, 4, 834–842, doi:10.3762/bjnano.4.94

• excitation and/or fluorescence exist as main source for the population of excited vibrational states. This has been confirmed by time resolved pump–probe anti-Stokes SERS studies on rhodamine 6G on silver nanostructures with an excitation wavelength of 633 nm [40]. These experiments identified a rise time of