Pulsed laser in liquid grafting of gold nanoparticle–carbon support composites

• Madeleine K. Wilsey,
• Teona Taseska,
• Qishen Lyu,
• Connor P. Cox and
• Astrid M. Müller

Beilstein J. Nanotechnol. 2025, 16, 349–361, doi:10.3762/bjnano.16.26

• the reported specific surface area of the carbon fiber paper used here [24]. Pulsed laser grafting produced integrated gold nanoparticle–carbon fiber paper composites (Figure 2B), using aqueous 1.0 M HAuCl4 solution, hydrophilic carbon fiber paper, and unfocused Nd:YAG laser irradiation with 10 Hz, 8

• ns, 532 nm, and 87 mJ·cm−2 pulses. We employed 532 nm pulses because gold nanoparticle generation works well at that wavelength, as nanoparticle nucleation and growth take advantage of this laser wavelength being resonant with the surface plasmon resonance in gold nanoparticles [25]. For 532 nm

• that our laser fluence did not enable carbon sublimation. Stable gold colloids have been produced by reactive nanosecond laser irradiation of aqueous [AuCl4]– solutions [29][30]. Colloidal gold nanoparticle formation occurred by nucleation of reduced (metallic) gold atoms [25][31][32]. As in pulsed

Recent advances in photothermal nanomaterials for ophthalmic applications

• Jiayuan Zhuang,
• Linhui Jia,
• Chenghao Li,
• Rui Yang,
• Jiapeng Wang,
• Wen-an Wang,
• Heng Zhou and
• Xiangxia Luo

Beilstein J. Nanotechnol. 2025, 16, 195–215, doi:10.3762/bjnano.16.16

• PAI contrast agents [195][196]. Gold nanorods [197], gold nanostars [198], hollow gold nanocages [199], chains of gold nanoparticles [200], and ultraminiature chain-like gold nanoparticle clusters [201] have been used for the detection of ocular structures such as retinal blood vessels, choroidal

Gold nanomakura: nanoarchitectonics and their photothermal response in association with carrageenan hydrogels

• Nabojit Das,
• Vikas,
• Akash Kumar,
• Sanjeev Soni and
• Raja Gopal Rayavarapu

Beilstein J. Nanotechnol. 2024, 15, 678–693, doi:10.3762/bjnano.15.56

• gold nanoparticle suspensions of CTAB-AuNM, MTAB-AuNM, and DTAB-AuNM, respectively, whereas Figure 8b shows heating and cooling of DTAB-AuNR and CTAB-AuNR, respectively. From Figure 8a, it was observed that the temperature of deionized water reached up to ≈3 °C under irradiation with a light source

• spectra range of 500–4000 cm−1. Photothermal response of the synthesized AuNMs Experimental setup for the photothermal response measurement of AuNMs suspensions In order to conduct photothermal studies of the synthesized AuNMs suspensions, 1.5 mL of various gold nanoparticle suspensions (OD = 1) was taken

Nanotechnological approaches in the treatment of schistosomiasis: an overview

• Lucas Carvalho,
• Michelle Sarcinelli and
• Beatriz Patrício

Beilstein J. Nanotechnol. 2024, 15, 13–25, doi:10.3762/bjnano.15.2

• nanoparticles are among the most widely utilized nanotechnological systems. Most research articles utilized gold nanoparticle as inorganic nanoparticles, while PLGA and chitosan are commonly utilized to produce polymeric nanoparticles due to its biocompatibility reported in various animal studies. However

A combined gas-phase dissociative ionization, dissociative electron attachment and deposition study on the potential FEBID precursor [Au(CH₃)₂Cl]₂

• Elif Bilgilisoy,
• Ali Kamali,
• Thomas Xaver Gentner,
• Gerd Ballmann,
• Sjoerd Harder,
• Hans-Peter Steinrück,
• Hubertus Marbach and
• Oddur Ingólfsson

Beilstein J. Nanotechnol. 2023, 14, 1178–1199, doi:10.3762/bjnano.14.98

• between the (111) planes of a face-centered cubic (FCC) gold nanoparticle [39][40]. The crystallinity of the gold nanoparticles was also investigated by using selected area electron diffraction (SAED) pattern shown in Figure 2c. The relatively bright circular patterns indicate polycrystallinity of the

Nanoarchitectonics of photothermal materials to enhance the sensitivity of lateral flow assays

• Elangovan Sarathkumar,
• Rajasekharan S. Anjana and
• Ramapurath S. Jayasree

Beilstein J. Nanotechnol. 2023, 14, 988–1003, doi:10.3762/bjnano.14.82

• effect of the gold nanoparticle architecture on the photothermal conversion efficiency in LFAs [90]. Gold nanocages (GNCs) exhibited higher photothermal conversion efficiency than other nanostructures, including gold nanospheres, shells, and stars. Using GNCs, they performed sandwich and competitive LFAs

• -fold higher sensitivity than a conventional gold nanoparticle-based LFA. Further, the developed strips were validated with real-field samples and the recovery rate of samples was found to be 96.7% to 106.7% for the photothermal method, which was equivalent to the recovery rate of the SERS method (98.2

Metal-organic framework-based nanomaterials as opto-electrochemical sensors for the detection of antibiotics and hormones: A review

• Akeem Adeyemi Oladipo,
• Saba Derakhshan Oskouei and
• Mustafa Gazi

Beilstein J. Nanotechnol. 2023, 14, 631–673, doi:10.3762/bjnano.14.52

• signals are obtained, the likelihood of inaccurate results is reduced. For example, Rani et al. [50] synthesised a gold nanoparticle-decorated amine-functionalized Zr-MOF through a solvothermal synthesis process in order to detect nitrofurazone antibiotics via dual-mode (opto-electrochemical) sensing

The role of deep eutectic solvents and carrageenan in synthesizing biocompatible anisotropic metal nanoparticles

• Nabojit Das,
• Akash Kumar and
• Raja Gopal Rayavarapu

Beilstein J. Nanotechnol. 2021, 12, 924–938, doi:10.3762/bjnano.12.69

• Relationships in Electrocatalysis”, Angew. Chem. Int. Ed., with permission from John Wiley and Sons. Copyright © 2008 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. This content is not subject to CC BY 4.0. Carrageenan as capping and reducing agent for gold nanoparticle synthesis. (A) Histogram for the size

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

• deposition [41], or on dense silver island films created by pulsed laser deposition [42] or physical vapor deposition [43]. In [44], individual plasmonic nanotags are prepared by coating gold nanoparticle clusters with Raman reporters. This work explores the minimum number of tags required for obtaining a

Photothermally active nanoparticles as a promising tool for eliminating bacteria and biofilms

• Mykola Borzenkov,
• Piersandro Pallavicini,
• Angelo Taglietti,
• Laura D’Alfonso,
• Maddalena Collini and
• Giuseppe Chirico

Beilstein J. Nanotechnol. 2020, 11, 1134–1146, doi:10.3762/bjnano.11.98

• examples in which the photothermal effect was applied on gold nanomaterials (nanorods, nanoshells, silk hydrogel containing spherical gold nanoparticles) to induce antibacterial activity were summarized in a review [51]. Later on, in 2017, another review highlighted the advances in the gold nanoparticle

• application of gold-nanoparticle-coated surfaces and nanocomposite materials for antibacterial treatments. Gold nanoshells functionalized with carboxylate-terminated organosulfur ligands were attached to the surface of a model catheter and their effectiveness in eliminating adhering E. faecalis bacteria was

• gold nanoparticle aggregation was implemented [54]. According to this strategy, the spherical nanoparticles, with a typical localized surface plasmon resonance (LSPR) absorption at 520 nm, aggregated in situ at the surface of the bacterial membrane. The gold nanoparticle aggregation induced a change in

Straightforward synthesis of gold nanoparticles by adding water to an engineered small dendrimer

• Sébastien Gottis,
• Régis Laurent,
• Vincent Collière and
• Anne-Marie Caminade

Beilstein J. Nanotechnol. 2020, 11, 1110–1118, doi:10.3762/bjnano.11.95

• the growth and stabilization of isolated gold nanoparticles. Thus, an unprecedented method for the synthesis of colloidal suspensions of water-soluble gold nanoparticles was proposed in this work. Keywords: colloidal suspension; complexation; dendrimer; gold nanoparticle; phosphorus; Introduction

• fibers stabilized by amines (AuI, ca. 3.25 Å) [10], but slightly longer than in the case of gold particles in silica glass and gold foil (2.84 Å) [61] or in bulk gold (2.88427 Å) [10]. The dependence between the gold nanoparticle shape and the conditions in which they were generated is the subject of a

• information contains an HRTEM image of a gold nanoparticle showing the gold atomic planes, 31P, 1H and 13C NMR spectra of the compounds 2 and 3, 1H NMR spectra of a slightly hydrolyzed compound 3 and 31P, 1H and 13C NMR spectra of compound 4. Supporting Information File 56: Additional HRTEM images and NMR

Using gold nanoparticles to detect single-nucleotide polymorphisms: toward liquid biopsy

• María Sanromán Iglesias and
• Marek Grzelczak

Beilstein J. Nanotechnol. 2020, 11, 263–284, doi:10.3762/bjnano.11.20

• genetic mutations that alter single base in DNA, causing sequence modification in amino acids and malfunction of a corresponding protein. Reprinted with permission from [51], copyright 2014 Elsevier. Gold nanoparticle-based colorimetric assays in the colloidal phase. a) Cross-linking hybridization assay

Nonclassical dynamic modeling of nano/microparticles during nanomanipulation processes

• Moharam Habibnejad Korayem,
• Ali Asghar Farid and
• Rouzbeh Nouhi Hefzabad

Beilstein J. Nanotechnol. 2020, 11, 147–166, doi:10.3762/bjnano.11.13

• the substrate, along with the dominant motion mode, the nonclassical theory of continuum mechanics and a developed von Mises yield criterion are employed to investigate the dynamical behavior of a cylindrical gold nanoparticle during manipulation. Timoshenko and Euler–Bernoulli beam theories based on

• deflection before the beginning of the dominant mode and a difference of more than 25% in the dynamic modeling of a 200 nm manipulation of a gold nanoparticle with a length of 25 µm and aspect ratio of 30. This difference increases with each increment of the aspect ratio and reduction of manipulation

• distance. Furthermore, by applying an extended von Mises criterion on the modified couple stress theory, it is found that the failure aspect ratio of a cylindrical gold nanoparticle based on nonclassical models is 212% more than that of the classical model. In the end, the results are compared with those

Molecular architectonics of DNA for functional nanoarchitectures

• Debasis Ghosh,
• Lakshmi P. Datta and
• Thimmaiah Govindaraju

Beilstein J. Nanotechnol. 2020, 11, 124–140, doi:10.3762/bjnano.11.11

Long-term stability and scale-up of noncovalently bound gold nanoparticle-siRNA suspensions

• Anna V. Epanchintseva,
• Julia E. Poletaeva,
• Dmitrii V. Pyshnyi,
• Elena I. Ryabchikova and
• Inna A. Pyshnaya

Beilstein J. Nanotechnol. 2019, 10, 2568–2578, doi:10.3762/bjnano.10.248

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

• spectroscopy (FTIR) were performed to characterize the gold nanoparticle decoration and to examine the thiol monolayer bonding to the MWCNTs. The detection of aromatic vapours using Au-MWCNT and HDT/Au-MWCNT sensors down to the ppm range shows that the presence of the self-assembled layer increases the

• , metal decoration or chemical functionalisation [13]. In the present work, we investigated the effect of gold nanoparticle decorated, multiwall carbon nanotubes functionalized with 1-hexadecanethiol on the sensor selectivity and sensitivity towards benzene and toluene vapours. Experimental Materials

• Multiwall carbon nanotubes (MWCNTs) were purchased from Nanocyl S.A. (Belgium) with a minimum purity of 95 wt %. They have an average length of 50 µm and average inner/outer diameter of 3 and 15 nm, respectively. 1-Hexadecanethiol (HDT) was purchased from Sigma-Aldrich. Sensor fabrication Gold nanoparticle

Porous silver-coated pNIPAM-co-AAc hydrogel nanocapsules

• William W. Bryan,
• Riddhiman Medhi,
• Maria D. Marquez,
• Supparesk Rittikulsittichai,
• Michael Tran and
• T. Randall Lee

Beilstein J. Nanotechnol. 2019, 10, 1973–1982, doi:10.3762/bjnano.10.194

• -magnification image of a THPC gold-seeded pDADMAC-modified pNIPAM-co-AAc hydrogel core particle. Due to insufficient electron density in the pNIPAM-co-AAc, the polymer core is not visible by TEM. However, due to the consistent size measurements of the gold clusters, and the absence of randomness in the gold

• nanoparticle distribution, we can conclude that there is a soft hydrogel polymer core onto which the gold seeds are attached. Furthermore, these results are consistent with SEM measurements. Thermo-responsive behavior of the pNIPAM-co-AAc hydrogel cores. The swelling and collapsing behavior of hydrogels is

Highly ordered mesoporous silica film nanocomposites containing gold nanoparticles for the catalytic reduction of 4-nitrophenol

• Mohamad Azani Jalani,
• Leny Yuliati,
• Siew Ling Lee and
• Hendrik O. Lintang

Beilstein J. Nanotechnol. 2019, 10, 1368–1379, doi:10.3762/bjnano.10.135

• -nitrophenol at room temperature, the highly ordered structure of the as-fabricated silica/gold nanoparticle thin film composite after thermal hydrogen reduction at 210 °C resulted in an improved catalytic activity for the reduction of 4-nitrophenol to 4-aminophenol compared to the material calcined at 250 °C

• . Such catalytic activity is due to the presence of gold nanoparticles of smaller size in the silicate channels of the highly ordered mesoporous film nanocomposites. Keywords: catalyst; gold nanoparticle; mesoporous silica; nanocomposite; thermal hydrogen reduction; 4-nitrophenol reduction

• the AuNPs on the substrate. Conclusion By using calcination and thermal hydrogen reduction in the range of 190 to 450 °C, we have demonstrated that mesoporous silica/gold nanoparticle thin film composites with a hexagonal structure could be successfully fabricated from as-synthesized mesostructured

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

• a short-chain thiol sample in Figure 4b. The S 2p3/2 peak centered at 161.9 eV is reported to be generated by photoelectrons emitted from sulfur atoms bound to gold atoms at the gold nanoparticle surface as thiolate species [38]. The nonexistence of peaks in the binding energy region above 164 eV

Enhancement of X-ray emission from nanocolloidal gold suspensions under double-pulse excitation

• Wei-Hung Hsu,
• Frances Camille P. Masim,
• Armandas Balčytis,
• Hsin-Hui Huang,
• Tetsu Yonezawa,
• Aleksandr A. Kuchmizhak,
• Saulius Juodkazis and
• Koji Hatanaka

Beilstein J. Nanotechnol. 2018, 9, 2609–2617, doi:10.3762/bjnano.9.242

• wavelength, the concentration of gold nanoparticle yields a separation of ca. 1 μm between them. (a) Interaction of a water film with 20 nm-diameter gold nanoparticles and a laser pulse (modeled as a plane wave incidence). (b) The formation of a plasma around nanoparticles with permittivity near zero ε

• ≈ 0.86 + i0.86 (ENZ) in which light is efficiently absorbed: 20 nm wide shell around a 20 nm diameter nanoparticle. (c) Sphere of strongly ionized water around a gold nanoparticle. The absorption depth under ENZ plasma conditions is ls = 149 nm, which is taken as radius of the excited volume

High-throughput micro-nanostructuring by microdroplet inkjet printing

• Hendrikje R. Neumann and
• Christine Selhuber-Unkel

Beilstein J. Nanotechnol. 2018, 9, 2372–2380, doi:10.3762/bjnano.9.222

• micellar gold nanoparticle solution was first spin-coated on a poly-silicon (poly-Si) 10 × 10 mm wafer unit to test the properties of the solution and to generate a control sample. For the used block copolymer and concentrations, it is well-known that spherical micelles form [8], hence a closed-packed

• system by o-xylene at a fixed concentration. Gold nanoparticle distribution depends on the material Finally, the gold nanoparticle separation within the printed circles was analyzed by a nearest neighbor distance (NND) algorithm. For samples with highly grained surfaces (NiTi samples and the a-Si samples

• nickel–titanium foil, and (E) 200 nm nickel–titanium thin film on 4 µm copper and a glass substrate. Distribution of the droplet diameter of the micellar gold nanoparticle solution on different materials presented in boxcharts (box: interquartile range; line in each box: median; dot: mean; whiskers

Dumbbell gold nanoparticle dimer antennas with advanced optical properties

• Janning F. Herrmann and
• Christiane Höppener

Beilstein J. Nanotechnol. 2018, 9, 2188–2197, doi:10.3762/bjnano.9.205

• asymmetric gold nanoparticle antennas (AuNPs) with improved optical near-field properties based on the formation of sub-nanometer size gaps, which are suitable for studying matter with high-resolution and single molecule sensitivity. These dumbbell antennas are characterized in regard to their far-field and

Self-assembled quasi-hexagonal arrays of gold nanoparticles with small gaps for surface-enhanced Raman spectroscopy

• Emre Gürdal,
• Simon Dickreuter,
• Fatima Noureddine,
• Pascal Bieschke,
• Dieter P. Kern and
• Monika Fleischer

Beilstein J. Nanotechnol. 2018, 9, 1977–1985, doi:10.3762/bjnano.9.188

• intensities even when correcting for the different particle sizes and area coverage. This effect may be attributed to a stronger near-field coupling between the particles due to smaller inter-particle distances. Schematic illustration of the preparation of variable-size gold nanoparticle arrays on top of a

Tuning adhesion forces between functionalized gold colloidal nanoparticles and silicon AFM tips: role of ligands and capillary forces

• Sven Oras,
• Sergei Vlassov,
• Marta Berholts,
• Rünno Lõhmus and
• Karine Mougin

Beilstein J. Nanotechnol. 2018, 9, 660–670, doi:10.3762/bjnano.9.61

• higher than on their nanoparticle counterparts, the dependance on functional groups remained the same. Keywords: adhesion; AFM; gold; nanoparticle functionalization; nanoparticles; Introduction Adhesion is a complex combination of various interfacial forces such as capillary, electrostatic and vdW

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

• transition temperature, thus improving the thermo- and electro-optical properties of the PLCF. Keywords: fiber optics; gold nanoparticle; liquid crystal; phase transition temperature; photonic crystal fiber; Introduction Since their discovery in 1888, liquid crystals (LCs) have attracted nonstop research