Plasmonic nanotechnology for photothermal applications – an evaluation

• A. R. Indhu,
• L. Keerthana and
• Gnanaprakash Dharmalingam

Beilstein J. Nanotechnol. 2023, 14, 380–419, doi:10.3762/bjnano.14.33

Surface-enhanced Raman scattering of water in aqueous dispersions of silver nanoparticles

• Paulina Filipczak,
• Krzysztof Hałagan,
• Jacek Ulański and
• Marcin Kozanecki

Beilstein J. Nanotechnol. 2021, 12, 497–506, doi:10.3762/bjnano.12.40

• enhanced by the mobility decrease in the nearest vicinity of the metal nanoparticle and by the increase of the rotational relaxation time and residence time of water molecules surrounding the ion wall in a charged monolayer-protected Au nanoparticle [39]. Assuming that the observed Raman enhancement is

The role of gold atom concentration in the formation of Cu–Au nanoparticles from the gas phase

• Yuri Ya. Gafner,
• Svetlana L. Gafner,
• Darya A. Ryzkova and
• Andrey V. Nomoev

Beilstein J. Nanotechnol. 2021, 12, 72–81, doi:10.3762/bjnano.12.6

• copper atoms is higher than that of gold atoms). Consequently, the more copper atoms in a binary Cu–Au nanoparticle, the greater the probability of preserving the primary clusters joined in a random motion in a single nanoparticle (Figure 2). An analysis of the chemical composition of Au3Cu and Cu3Au

Optically and electrically driven nanoantennas

• Monika Fleischer,
• Dai Zhang and
• Alfred J. Meixner

Beilstein J. Nanotechnol. 2020, 11, 1542–1545, doi:10.3762/bjnano.11.136

• to a sharp tip is refined to a two-step procedure with high throughput. A self-assembly approach to create a dumbbell antenna consisting of a 40 nm and an 80 nm Au nanoparticle at a scanning tip is shown in [48] and applied for single molecule sensitivity imaging. The advantage of applying TERS for

Multiwalled carbon nanotube based aromatic volatile organic compound sensor: sensitivity enhancement through 1-hexadecanethiol functionalisation

• Nadra Bohli,
• Meryem Belkilani,
• Juan Casanova-Chafer,
• Eduard Llobet and
• Adnane Abdelghani

Beilstein J. Nanotechnol. 2019, 10, 2364–2373, doi:10.3762/bjnano.10.227

• mechanically moved from the substrate onto a TEM Cu-grid for conducting TEM analysis. Figure 2 displays HRTEM images at a magnification of (a) 300 K, (b) 600 K and (c) 400 K. The HRTEM analysis indicates an average gold nanoparticle size of 2 nm. We clearly see in Figure 2b a fairly homogeneous Au nanoparticle

• the nanoparticles are on one side only (the exposed side). Despite this fact, the Au nanoparticle decoration is considered sufficiently homogeneous for our application needs. The use of other techniques, resulting in a more efficient distribution, are believed to further enhance the overall sensor

Hydrophilicity and carbon chain length effects on the gas sensing properties of chemoresistive, self-assembled monolayer carbon nanotube sensors

• Juan Casanova-Cháfer,
• Carla Bittencourt and
• Eduard Llobet

Beilstein J. Nanotechnol. 2019, 10, 565–577, doi:10.3762/bjnano.10.58

• electromagnetic field around the Au–nanoparticle–dielectric interface. The Raman shift observed can be caused, in part, by LSPR. Further details can be found in Supporting Information File 1 (Figure S3). Since oxygen-plasma-treated CNTs were employed, a study on the nature of oxygenated species present (acting as

Sub-wavelength waveguide properties of 1D and surface-functionalized SnO₂ nanostructures of various morphologies

• Venkataramana Bonu,
• Binaya Kumar Sahu,
• Arindam Das,
• Sankarakumar Amirthapandian,
• Sandip Dhara and
• Harish C. Barshilia

Beilstein J. Nanotechnol. 2019, 10, 379–388, doi:10.3762/bjnano.10.37

• of 950 °C. The inset in Figure 1a shows a high-resolution image of the smooth, square-shaped NWs. The length and width of the NWs are around 100 µm and 200–250 nm, respectively. A Au nanoparticle appearing as a dark contrast at the tip of the NW supports the VLS growth mechanism [24]. Figure 1b shows

• the cylindrical-shaped NWs densely grown on the Si substrate at a temperature of 1000 °C. Similar to the square-shaped NWs, the surface appears to be smooth and the Au nanoparticle at the tip supports the VLS mechanism (inset Figure 1b) [24][25]. The length and width of the cylindrical-shaped NWs are

• , insets in 1a and 1b show a single NW with a Au nanoparticle at the tip, (c) flower creeper-like, self catalytically grown, belt-shaped NWs, and (d) NBs after ultra-sonication, where the inset shows a tapered NB. TEM images of square-shaped NWs. (a) Low-magnification image of a single NW. (b) HRTEM image

Surface-plasmon-enhanced ultraviolet emission of Au-decorated ZnO structures for gas sensing and photocatalytic devices

• T. Anh Thu Do,
• Truong Giang Ho,
• Thu Hoai Bui,
• Quang Ngan Pham,
• Hong Thai Giang,
• Thi Thu Do,
• Duc Van Nguyen and
• Dai Lam Tran

Beilstein J. Nanotechnol. 2018, 9, 771–779, doi:10.3762/bjnano.9.70

• and Au nanoparticle/ZnO structures using the chemical bath deposition approach (b and c). (a) TEM images and (b) EDS spectrum of Au nanoparticle/ZnO structures. (a) Absorption spectra; (b) Kubelka–Munk transformed spectra; (c) photoluminescence spectra at room temperature; and (d) time-resolved

• ) Photocatalytic activity of all samples under periodic visible irradiation. The experiment was repeated three times. Schematic illustration of the mechanism for the enhanced gas sensing and photoactivity reported for the Au nanoparticle/ZnO structures in this work. Comparison of sensing performance between our

The nanofluidic confinement apparatus: studying confinement-dependent nanoparticle behavior and diffusion

• Stefan Fringes,
• Felix Holzner and
• Armin W. Knoll

Beilstein J. Nanotechnol. 2018, 9, 301–310, doi:10.3762/bjnano.9.30

• forth scan line. During τavg the diffusion of a 60 nm Au nanoparticle (bulk diffusivity Dp ≈ 7 μm2 s−1) in one dimension is ≈ 20 nm, which is small compared to the laser line spacing. Thus camera records an average image of the diffusing particle by integrating snapshots of the particle position when

Bombyx mori silk/titania/gold hybrid materials for photocatalytic water splitting: combining renewable raw materials with clean fuels

• Stefanie Krüger,
• Michael Schwarze,
• Otto Baumann,
• Christina Günter,
• Michael Bruns,
• Christian Kübel,
• Dorothée Vinga Szabó,
• Rafael Meinusch,
• Verónica de Zea Bermudez and
• Andreas Taubert

Beilstein J. Nanotechnol. 2018, 9, 187–204, doi:10.3762/bjnano.9.21

• ][15]) TiO2-based water splitting catalysts are among the most popular materials for visible light water splitting [16][17][18][19][20]. Among these, TiO2/Au nanocomposites have attracted special interest because of their synergistic mode of action between the Au nanoparticle (AuNP) plasmons and the

Thermo- and electro-optical properties of photonic liquid crystal fibers doped with gold nanoparticles

• Agata Siarkowska,
• Miłosz Chychłowski,
• Daniel Budaszewski,
• Bartłomiej Jankiewicz,
• Bartosz Bartosewicz and
• Tomasz R. Woliński

Beilstein J. Nanotechnol. 2017, 8, 2790–2801, doi:10.3762/bjnano.8.278

• the N–I transition temperature. This technique allowed us to obtain a uniform mixture without any sedimentation, which could plug the microchannels of the PCF and hinder (or even prevent) the infiltration process. Synthesis of liquid crystal–Au nanoparticle composites The Au NP-doped LC mixture was

Fabrication of carbon nanospheres by the pyrolysis of polyacrylonitrile–poly(methyl methacrylate) core–shell composite nanoparticles

• Dafu Wei,
• Youwei Zhang and
• Jinping Fu

Beilstein J. Nanotechnol. 2017, 8, 1897–1908, doi:10.3762/bjnano.8.190

• treatments, and thus is very crucial to obtain discrete carbon nanospheres after pyrolysis. Jérom et al. [32] obtained discrete carbon nanocapules after pyrolysis of stable PAN-b-PAA micelles with Au-nanoparticle-crosslinked cores. However, the difficulty in synthesis of the block copolymers and the low

Gas sensing properties of MWCNT layers electrochemically decorated with Au and Pd nanoparticles

• Elena Dilonardo,
• Michele Penza,
• Marco Alvisi,
• Riccardo Rossi,
• Gennaro Cassano,
• Cinzia Di Franco,
• Francesco Palmisano,
• Luisa Torsi and
• Nicola Cioffi

Beilstein J. Nanotechnol. 2017, 8, 592–603, doi:10.3762/bjnano.8.64

• with the highest Pd loading showed the highest sensitivity when operated at 100 °C. Finally, considering the reported gas sensing results, sensing mechanisms have been proposed, correlating the chemical composition and gas sensing responses. Keywords: Au nanoparticle; chemiresistive gas sensor

Fingerprints of a size-dependent crossover in the dimensionality of electronic conduction in Au-seeded Ge nanowires

• Maria Koleśnik-Gray,
• Gillian Collins,
• Justin D. Holmes and
• Vojislav Krstić

Beilstein J. Nanotechnol. 2016, 7, 1574–1578, doi:10.3762/bjnano.7.151

• measuring the electrical conductivity, σNW, and field effect mobility, μNW, we were able to identify the dominant scattering mechanisms and the R-dependence of the electrostatic screening length. Ge NWs used in this study were synthesized at 400 °C on anodized alumina supports using a Au nanoparticle seeded

• is limited predominantly by ionized impurity scatterers. This suggests that Ge NWs only in the quasi-1D regime can be expected to deliver high-performance sensor capabilities. Characterization of Au-seeded Ge NWs. (a) TEM image of a Ge NW with an Au nanoparticle at the tip. (b) Higher magnification

Case studies on the formation of chalcogenide self-assembled monolayers on surfaces and dissociative processes

• Yongfeng Tong,
• Tingming Jiang,
• Azzedine Bendounan,
• Makri Nimbegondi Kotresh Harish,
• Angelo Giglia,
• Stefan Kubsky,
• Fausto Sirotti,
• Luca Pasquali,
• Srinivasan Sampath and
• Vladimir A. Esaulov

Beilstein J. Nanotechnol. 2016, 7, 263–277, doi:10.3762/bjnano.7.24

• at room temperatures it was close to 161 eV. Thus there exist rather different accounts on thiophene adsorption on Au. Studies of 3,4-ethylenedioxythiophene (EDOT) and its derivatives [62] (Figure 6a) on polycrystalline Au, Au(111) and Au nanoparticle (AuNP) surfaces from vapor phase and solution has

Chemiresistive/SERS dual sensor based on densely packed gold nanoparticles

• Sanda Boca,
• Cosmin Leordean,
• Simion Astilean and
• Cosmin Farcau

Beilstein J. Nanotechnol. 2015, 6, 2498–2503, doi:10.3762/bjnano.6.259

• solution, drying). The SERS enhancement factor, EF, for this kind of self-assembled Au nanoparticle films is on the order 106 to 107, as we previously demonstrated in similar systems. It was calculated using the equation: where ISERS is the SERS intensity, IRaman is the Raman intensity, NSERS is the

Au nanoparticle-based sensor for apomorphine detection in plasma

• Chiara Zanchi,
• Andrea Lucotti,
• Matteo Tommasini,
• Sebastiano Trusso,
• Ugo de Grazia,
• Emilio Ciusani and
• Paolo M. Ossi

Beilstein J. Nanotechnol. 2015, 6, 2224–2232, doi:10.3762/bjnano.6.228

Synthesis, characterization and in vitro biocompatibility study of Au/TMC/Fe₃O₄ nanocomposites as a promising, nontoxic system for biomedical applications

• Hanieh Shirazi,
• Maryam Daneshpour,
• Soheila Kashanian and
• Kobra Omidfar

Beilstein J. Nanotechnol. 2015, 6, 1677–1689, doi:10.3762/bjnano.6.170

• completed by adding sodium azide (0.01%) and drying the final coated nanoparticles in the oven. The resulting black powder was stored at 4 °C in a dark bottle [38]. Au nanoparticle-covered magnetic nanoparticles 0.2 g of the polymer-coated Fe3O4 nanoparticles were exposed to 25 mL of the previously

• synthesized, Au nanoparticle, colloid solution for about 2 h under continuous stirring conditions. The Au nanoparticles were assumed to attach to the polymer/Fe3O4 complex via electrostatic interaction, which was confirmed by the discoloration of the mixture. After washing with deionized water and adding

• attached onto the surface of the polymer/Fe3O4 complex. For the first one, 3 portions of equal amounts of polymer/Fe3O4 nanoparticles (20 mg) were subjected to different volumes of Au nanoparticle solutions (2.5, 5 and 7.5 mL) for 2 h. For the second analysis, equal amounts of polymer/Fe3O4 nanoparticles

Properties of plasmonic arrays produced by pulsed-laser nanostructuring of thin Au films

• Katarzyna Grochowska,
• Katarzyna Siuzdak,
• Peter A. Atanasov,
• Carla Bittencourt,
• Anna Dikovska,
• Nikolay N. Nedyalkov and
• Gerard Śliwiński

Beilstein J. Nanotechnol. 2014, 5, 2102–2112, doi:10.3762/bjnano.5.219

• -scale plasmonic technologies. SEM images and size distributions (with the mean diameter value in brackets and standard deviation, σ, given) of Au nanoparticle arrays obtained from films of a thickness of d = 10 nm deposited on SiO2 glass (a,b) and ITO/BK-7 glass (c) substrates by irradiation with 15 (a

A study on the consequence of swift heavy ion irradiation of Zn–silica nanocomposite thin films: electronic sputtering

• Compesh Pannu,
• Udai B. Singh,
• Dinesh. C. Agarwal,
• Saif A. Khan,
• Sunil Ojha,
• Ramesh Chandra,
• Hiro Amekura,
• Debdulal Kabiraj and
• Devesh. K. Avasthi

Beilstein J. Nanotechnol. 2014, 5, 1691–1698, doi:10.3762/bjnano.5.179

• values of 3/2 for small clusters and 7/2 for larger clusters, respectively. This rules out any possibility of a liquid–gas phase transition taking place in the vaporized Au nanoparticle resulting from SHI irradiation. Johnson et al. [42] reported a unifying description of sputtering in three different

Scale effects of nanomechanical properties and deformation behavior of Au nanoparticle and thin film using depth sensing nanoindentation

• Dave Maharaj and
• Bharat Bhushan

Beilstein J. Nanotechnol. 2014, 5, 822–836, doi:10.3762/bjnano.5.94

• each load. For each Au nanoparticle, further indentation experiments were carried out at intermediate and high loads. These loads were 500 and 1000 µN. Intermediate loads are defined as loads that allow for indents to approximately half the nanoparticle height or more, without fracturing or crushing

• apart during indentation leading to displacement of material below the Berkovich tip. Compression with a flat punch – Deformation of entire Au nanoparticle Nanoparticles were compressed to examine the differences between local deformation (nanoindentation) and global deformation (compression

Tuning the properties of magnetic thin films by interaction with periodic nanostructures

• Ulf Wiedwald,
• Felix Haering,
• Stefan Nau,
• Carsten Schulze,
• Herbert Schletter,
• Denys Makarov,
• Alfred Plettl,
• Karsten Kuepper,
• Manfred Albrecht,
• Johannes Boneberg and
• Paul Ziemann

Beilstein J. Nanotechnol. 2012, 3, 831–842, doi:10.3762/bjnano.3.93

• such samples with Au nanoparticle arrangements with particle diameters of 60 and 40 nm, respectively. The 60 nm sized particles arrange in a hexagonal close-packed order, only disturbed by particles of slightly different size. The 40 nm particles do not order as well as those with 60 nm diameter. Voids

Effect of spherical Au nanoparticles on nanofriction and wear reduction in dry and liquid environments

• Dave Maharaj and
• Bharat Bhushan

Beilstein J. Nanotechnol. 2012, 3, 759–772, doi:10.3762/bjnano.3.85

• used for manipulation of a single Au nanoparticle under dry conditions. For submerged-in-water conditions, a silicon nitride tip of lower force constant was used (Orc8 series, Bruker, Camarillo, CA) with k = 0.05 N/m and a nominal radius of 15 nm. For dry conditions, a 10% concentration of Au

• ) corresponds to the friction force between the Au nanoparticle and the silicon substrate at the initiation of sliding. In the bottom set of scan lines, both the topography and friction-force scan lines remain flat, which proves that the nanoparticle has been pushed out of the area. The friction-force results

• Au nanoparticle and the substrate provides the additional offset C–D in the friction signal shown in Figure 6a during manipulation in air, independent of the tip–substrate friction force [30]. If the tip–substrate friction force approaches that of the nanoparticle–substrate force, it is expected that

Plasmonics-based detection of H₂ and CO: discrimination between reducing gases facilitated by material control

• Gnanaprakash Dharmalingam,
• Nicholas A. Joy,
• Benjamin Grisafe and
• Michael A. Carpenter

Beilstein J. Nanotechnol. 2012, 3, 712–721, doi:10.3762/bjnano.3.81

• does not warrant this, as the resonance wavelength region is in the visible and lower UV range, enabling the use of compact and inexpensive light sources. The choice of gold has thus been validated by its stability at high temperatures (the melting point of an unsupported 6 nm diameter Au nanoparticle

Directed deposition of silicon nanowires using neopentasilane as precursor and gold as catalyst

• Britta Kämpken,
• Verena Wulf,
• Norbert Auner,
• Marcel Winhold,
• Michael Huth,
• Daniel Rhinow and
• Andreas Terfort

Beilstein J. Nanotechnol. 2012, 3, 535–545, doi:10.3762/bjnano.3.62

• results were obtained after 3 h with a medium-pressure mercury-vapor lamp (25 W). To develop the pattern, the films were purged with dichloromethane. Patterned as well as uniform films were then annealed at 650 °C for 1 h in the presence of air to obtain the Au nanoparticle deposits. NPS was synthesized