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Search for "nanorods" in Full Text gives 219 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.

Gold-coated plant virus as computed tomography imaging contrast agent

  • Alaa A. A. Aljabali,
  • Mazhar S. Al Zoubi,
  • Khalid M. Al-Batanyeh,
  • Ali Al-Radaideh,
  • Mohammad A. Obeid,
  • Abeer Al Sharabi,
  • Walhan Alshaer,
  • Bayan AbuFares,
  • Tasnim Al-Zanati,
  • Murtaza M. Tambuwala,
  • Naveed Akbar and
  • David J. Evans

Beilstein J. Nanotechnol. 2019, 10, 1983–1993, doi:10.3762/bjnano.10.195

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  • with a mean circulation half-life of 14.6 h. Von Maltzahan et al. developed PEGylated gold nanorods (13 × 47 nm) as CT contrast agents and for photothermal tumor therapy. The study resulted in tumor elimination and mice survival over 50 days [23]. Further, van Schooneveld et al. reported micelle-based
  • AuNPs by generating 66 nm AuNPs coated with an 11 nm layer of silica and showed that for mice injected with these particles a contrast signal was observed [13]. Popovtzer et al. reported successful CT imaging of squamous cell carcinoma using gold nanorods coated with anti-antigen A9 [24]. The low
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Published 07 Oct 2019

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

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  • , Zhao et al. created pH- and temperature-sensitive bioprobes by incorporating pNIPAM hydrogel cores with europium organic complexes [67]. In separate studies, Lee and co-workers utilized both biocompatible gold nanoshells, iron oxide nanoparticles, and gold nanorods with thermo-responsive hydrogel
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Published 04 Oct 2019

Biocatalytic oligomerization-induced self-assembly of crystalline cellulose oligomers into nanoribbon networks assisted by organic solvents

  • Yuuki Hata,
  • Yuka Fukaya,
  • Toshiki Sawada,
  • Masahito Nishiura and
  • Takeshi Serizawa

Beilstein J. Nanotechnol. 2019, 10, 1778–1788, doi:10.3762/bjnano.10.173

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  • ], distorted nanosheets with a bilayer structure [35], helical nanorods with a bilayer structure [35], and network structures composed of nanoribbon-shaped lamellar crystals [33][42][43][44][45][46] have been successfully constructed by changing the enzymatic reactions, tuning the self-assembly kinetics
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Published 26 Aug 2019

Materials nanoarchitectonics at two-dimensional liquid interfaces

  • Katsuhiko Ariga,
  • Michio Matsumoto,
  • Taizo Mori and
  • Lok Kumar Shrestha

Beilstein J. Nanotechnol. 2019, 10, 1559–1587, doi:10.3762/bjnano.10.153

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  • environments of closely packed nanorods (when the inter-rod distance was less than ca. 70 nm), enhanced excitation transfer was observed, indicating that fluorescence would be efficiently enhanced within well-aligned nanorods prepared at the air–water interface. Inorganic low-dimensional nanomaterials often
  • conversion of one-dimensional fullerene crystalline assemblies at extremely high temperatures resulted in highly graphitic one-dimensional carbon materials as demonstrated by Shrestha and co-workers [242]. One-dimensional C60 nanorods and nanotubes precipitated at liquid–liquid interface were fully
  • supercapacitors. Shrestha, Acharya, and co-workers investigated the optoelectronic properties of one-dimensional C60 nanorods prepared in ultra-rapid (5 s) processes of liquid–liquid interfacial precipitation at room temperature [244]. Dominant excitonic charge transfer transitions within the nanorods was
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Published 30 Jul 2019

Selective gas detection using Mn3O4/WO3 composites as a sensing layer

  • Yongjiao Sun,
  • Zhichao Yu,
  • Wenda Wang,
  • Pengwei Li,
  • Gang Li,
  • Wendong Zhang,
  • Lin Chen,
  • Serge Zhuivkov and
  • Jie Hu

Beilstein J. Nanotechnol. 2019, 10, 1423–1433, doi:10.3762/bjnano.10.140

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  • -nanoparticle-decorated WO3 nanorods, where 1 wt % Pd-WO3 showed excellent selectivity to H2 (>1000 times) over other gases and WO3 shows almost no selectivity [10]. Choi et al. fabricated gas sensors based on pristine WO3 nanorods and Cr2O3-functionalized WO3 nanorods. The gas sensing results showed that the
  • of W6+ (0.060 nm) [15]. Figure 2 presents the typical scanning electron microscopy (SEM) images of pure WO3 and Mn3O4/WO3 composites, where nanoparticles and nanorods with diameters in the range of 100–200 nm can be seen clearly. The samples present unconsolidated structures, which is favorable for
  • gas sensing performance. Actually, the precursors before calcination are nanowire-like (Supporting Information File 1, Figure S1), but they present nanoparticles or nanorods after calcination treatment. The process could be explained by the re-crystallization of WO3 when annealing in air atmosphere
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Published 17 Jul 2019

A highly efficient porous rod-like Ce-doped ZnO photocatalyst for the degradation of dye contaminants in water

  • Binjing Hu,
  • Qiang Sun,
  • Chengyi Zuo,
  • Yunxin Pei,
  • Siwei Yang,
  • Hui Zheng and
  • Fangming Liu

Beilstein J. Nanotechnol. 2019, 10, 1157–1165, doi:10.3762/bjnano.10.115

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  • ] synthesized pristine and Ce-doped ZnO with various doping concentrations via a chemical bath method. The morphology of the structures turned from flower-like to mixed morphology with pyramid shapes. Chouchene et al. [22] prepared Ce-doped ZnO nanorods by a solvothermal method. However, to the best of our
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Published 03 Jun 2019

Photoactive nanoarchitectures based on clays incorporating TiO2 and ZnO nanoparticles

  • Eduardo Ruiz-Hitzky,
  • Pilar Aranda,
  • Marwa Akkari,
  • Nithima Khaorapapong and
  • Makoto Ogawa

Beilstein J. Nanotechnol. 2019, 10, 1140–1156, doi:10.3762/bjnano.10.114

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  • reactivity can be modified [48][49]. TiO2 and ZnO NPs with different shapes, sizes and exposed crystal facets were assembled to yield hollow particles, fibers, nanosheets, nanowires, nanorods, nanoflowers and nanobelts through various synthesis routes including template synthesis [50][51][52][53
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Published 31 May 2019

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

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  • glancing-angle deposition (GLAD) has been explored for the fabrication of vertical nanorods on planar substrates [38]. A special class of nanostructured surfaces are semicontinuous silver films (SSFs) [39][40] also known as metal island films [41], which are comprised of random fractal-type structures
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Published 15 May 2019

Tailoring the stability/aggregation of one-dimensional TiO2(B)/titanate nanowires using surfactants

  • Atiđa Selmani,
  • Johannes Lützenkirchen,
  • Kristina Kučanda,
  • Dario Dabić,
  • Engelbert Redel,
  • Ida Delač Marion,
  • Damir Kralj,
  • Darija Domazet Jurašin and
  • Maja Dutour Sikirić

Beilstein J. Nanotechnol. 2019, 10, 1024–1037, doi:10.3762/bjnano.10.103

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  • and in the presence of different additives [12][20][21][22], much less is known about 1D TNMs, such as titanium oxide nanotubes (TNTs), titanium oxide nanowires (TNWs) and titanium oxide nanorods (TNRs). As shown previously, the morphology of TNMs is expected to play a significant role in their
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Published 13 May 2019

Novel reversibly switchable wettability of superhydrophobic–superhydrophilic surfaces induced by charge injection and heating

  • Xiangdong Ye,
  • Junwen Hou and
  • Dongbao Cai

Beilstein J. Nanotechnol. 2019, 10, 840–847, doi:10.3762/bjnano.10.84

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  • ] deposited thin films of titanium dioxide nanorods on glass substrates by a low-temperature hydrothermal method. The films were stored in the dark for two weeks to yield films with a contact angle of 154 ± 1.3°. Film irradiation with ultraviolet light for 2 h rendered the films superhydrophilic with a
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Published 10 Apr 2019

Polydopamine-coated Au nanorods for targeted fluorescent cell imaging and photothermal therapy

  • Boris N. Khlebtsov,
  • Andrey M. Burov,
  • Timofey E. Pylaev and
  • Nikolai G. Khlebtsov

Beilstein J. Nanotechnol. 2019, 10, 794–803, doi:10.3762/bjnano.10.79

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  • 10.3762/bjnano.10.79 Abstract Au nanorods (AuNRs) have attracted a great interest as a platform for constructing various composite core/shell nanoparticles for theranostics applications. However, the development of robust methods for coating AuNRs with a biocompatible shell of high loading capacity and
  • theranostics in the future. Keywords: Au nanorods; cancer theranostics; fluorescent bioimaging; folate; polydopamine; targeted phototherapy; Introduction Multifunctional imaging and combined multimodal therapy strategies are very promising in cancer theranostics [1][2]. Possible way for such purpose is to
  • integrate various functionalities by incorporating different diagnostic and therapeutic agents into a single core/shell nanoparticle. Au nanorods (AuNRs) have attracted a great interest as a platform for theranostic applications because of tunable optical properties and simple protocols for synthesis with
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Published 01 Apr 2019

Deposition of metal particles onto semiconductor nanorods using an ionic liquid

  • Michael D. Ballentine,
  • Elizabeth G. Embry,
  • Marco A. Garcia and
  • Lawrence J. Hill

Beilstein J. Nanotechnol. 2019, 10, 718–724, doi:10.3762/bjnano.10.71

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  • an ionic liquid, and the effect this has on catalytic performance. Platinum, gold, and silver nanoparticles were deposited onto CdSe@CdS (core@shell) nanorods from metal salts in an ionic liquid (1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide) without additional surfactants or reducing
  • agents. Photocatalytic dye degradation experiments showed that catalysts with platinum particles deposited using the ionic liquid out-performed similar materials synthesized using organic solvents and ligands. We concluded that metal particles can be deposited onto well-defined semiconductor nanorods
  • using the methods reported here. Keywords: catalyst; ionic liquid; methylene blue; platinum; semiconductor nanorod; Introduction Core@shell semiconductor nanorods with attached noble metal particles have been widely studied as photocatalysts, and any improvement on the synthesis of these materials has
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Published 14 Mar 2019

Self-assembly and wetting properties of gold nanorod–CTAB molecules on HOPG

  • Imtiaz Ahmad,
  • Floor Derkink,
  • Tim Boulogne,
  • Pantelis Bampoulis,
  • Harold J. W. Zandvliet,
  • Hidayat Ullah Khan,
  • Rahim Jan and
  • E. Stefan Kooij

Beilstein J. Nanotechnol. 2019, 10, 696–705, doi:10.3762/bjnano.10.69

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  • surface. The self-assembled layers of CTAB molecules on the HOPG terraces prior to nanorod deposition were shown to change the wettability of the surface, and as a result, gold nanorod deposition takes place on nonwetting HOPG terraces. Keywords: CTAB; gold nanorods; micelles; self-assembly; wettability
  • gold nanorods align with the step edges whereas side-by-side close packed arrays oriented in all possible directions were observed at the terraces on HOPG [51]. In their work, however, the notable role of CTAB on a HOPG surface is not highlighted. It has been reported [43][45] that on nonpolar surfaces
  • assembled nanorods can disturb the desired properties between the associated gold nanorods and the HOPG surface. Furthermore, the study and understanding of various assembled morphologies of surfactant molecules is relevant in many other areas [13][14][32]. Results and Discussion In drying experiments on
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Published 13 Mar 2019

Biomimetic synthesis of Ag-coated glasswing butterfly arrays as ultra-sensitive SERS substrates for efficient trace detection of pesticides

  • Guochao Shi,
  • Mingli Wang,
  • Yanying Zhu,
  • Yuhong Wang,
  • Xiaoya Yan,
  • Xin Sun,
  • Haijun Xu and
  • Wanli Ma

Beilstein J. Nanotechnol. 2019, 10, 578–588, doi:10.3762/bjnano.10.59

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  • develop SERS substrates. Metal plasmonic nanostructures with specific shapes such as Au nanorods [9], Au nanostars [10], Ag nanocubes [11], porous Au nanoparticles [12] and pyramidal Ag [13] have been successfully synthesized by wet-chemical approaches. These plasmonic nanostructures can be used as SERS
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Published 28 Feb 2019

Advanced scanning probe lithography using anatase-to-rutile transition to create localized TiO2 nanorods

  • Julian Kalb,
  • Vanessa Knittel and
  • Lukas Schmidt-Mende

Beilstein J. Nanotechnol. 2019, 10, 412–418, doi:10.3762/bjnano.10.40

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  • Julian Kalb Vanessa Knittel Lukas Schmidt-Mende Department of Physics, University of Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany 10.3762/bjnano.10.40 Abstract In this article, we demonstrate the position-controlled hydrothermal growth of rutile TiO2 nanorods using a new scanning
  • nanocrystals and provide the growth of rutile TiO2 nanorods in well-defined areas. Due to the small tip radius, the resolution of this method is excellent and the method is quite inexpensive compared to electron-beam lithography and similar methods providing a position-controlled growth of semiconducting TiO2
  • hydrothermally grown rutile TiO2 nanorods [36]. Beside the homogeneous growth on macroscopic areas, we indicated how to trigger the growth via conventional electron-beam lithography locally. In this report, we apply an advanced but inexpensive scanning probe lithography technique to draw thin lines of nanorods
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Published 08 Feb 2019

Site-specific growth of oriented ZnO nanocrystal arrays

  • Rekha Bai,
  • Dinesh K. Pandya,
  • Sujeet Chaudhary,
  • Veer Dhaka,
  • Vladislav Khayrudinov,
  • Jori Lemettinen,
  • Christoffer Kauppinen and
  • Harri Lipsanen

Beilstein J. Nanotechnol. 2019, 10, 274–280, doi:10.3762/bjnano.10.26

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  • morphological structures such as nanorods [5][6][7], nanowires [8], tetrapods [9], nanodisks [10], nanotubes [11], flowers [12], and nanocrystals [13], have been reported. Among the many nanostructured morphologies possible for ZnO, self-assembled ZnO nanocrystals (NCs) have been attracting great attention due
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Published 24 Jan 2019

Sputtering of silicon nanopowders by an argon cluster ion beam

  • Xiaomei Zeng,
  • Vasiliy Pelenovich,
  • Zhenguo Wang,
  • Wenbin Zuo,
  • Sergey Belykh,
  • Alexander Tolstogouzov,
  • Dejun Fu and
  • Xiangheng Xiao

Beilstein J. Nanotechnol. 2019, 10, 135–143, doi:10.3762/bjnano.10.13

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  • [22]. Sputtering experiments have been performed mostly for gold nanoparticles and nanorods. Klimmer et al. [23] have studied the sputtering of gold nanoparticles with a radius of 3.6 nm on a sapphire substrate irradiated with 200 keV Ar ions. Their model predicts a strong size effect of the
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Published 10 Jan 2019

Surface plasmon resonance enhancement of photoluminescence intensity and bioimaging application of gold nanorod@CdSe/ZnS quantum dots

  • Siyi Hu,
  • Yu Ren,
  • Yue Wang,
  • Jinhua Li,
  • Junle Qu,
  • Liwei Liu,
  • Hanbin Ma and
  • Yuguo Tang

Beilstein J. Nanotechnol. 2019, 10, 22–31, doi:10.3762/bjnano.10.3

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  • nanoparticle comprised of CdSe/ZnS QDs and gold nanorods (GNRs) where the GNRs were applied to enhance the photoluminescence (PL) of the CdSe/ZnS QDs. In particular, we have obtained the scattering PL spectrum of a single CdSe/ZnS QD and GNR@CdSe/ZnS nanoparticle and comparison results show that the CdSe/ZnS
  • as an optical process for MCF-7 breast cancer cells. Keywords: bioimaging; gold nanorods; photoluminescence enhancement; quantum dots; Introduction In the past decades, quantum dots (QDs) have proven to be increasingly useful for their unique features [1][2][3][4][5]. The light emission from QDs
  • metal materials play a role in the enhancement of fluorescence in QDs, especially gold nanorods (GNRs) and Cu or Ca+ ion binding of QDs [16][17][18][19]. GNRs possess two plasmonic resonance bands – a longitudinal band and a transverse band. These bands correspond to the electron oscillations along the
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Published 03 Jan 2019

The nanoscaled metal-organic framework ICR-2 as a carrier of porphyrins for photodynamic therapy

  • Jan Hynek,
  • Sebastian Jurík,
  • Martina Koncošová,
  • Jaroslav Zelenka,
  • Ivana Křížová,
  • Tomáš Ruml,
  • Kaplan Kirakci,
  • Ivo Jakubec,
  • František Kovanda,
  • Kamil Lang and
  • Jan Demel

Beilstein J. Nanotechnol. 2018, 9, 2960–2967, doi:10.3762/bjnano.9.275

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  • light [23]. Alternatively, the antitumor activity of porphyrinic PCN-224 was increased by combining photodynamic and photothermal effects with chemotherapy; in this case the MOF was deposited onto gold nanorods and impregnated with a chemotherapeutic agent [24]. Strong phototoxic effects were reported
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Published 30 Nov 2018

Charged particle single nanometre manufacturing

  • Philip D. Prewett,
  • Cornelis W. Hagen,
  • Claudia Lenk,
  • Steve Lenk,
  • Marcus Kaestner,
  • Tzvetan Ivanov,
  • Ahmad Ahmad,
  • Ivo W. Rangelow,
  • Xiaoqing Shi,
  • Stuart A. Boden,
  • Alex P. G. Robinson,
  • Dongxu Yang,
  • Sangeetha Hari,
  • Marijke Scotuzzi and
  • Ejaz Huq

Beilstein J. Nanotechnol. 2018, 9, 2855–2882, doi:10.3762/bjnano.9.266

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  • such as the fabrication of electrodes, etch masks, nanorods, 3-dimensional, plasmonic and superconducting nanostructures [51][52] not all of which require the highest achievable resolution. In this section we present a brief review of sub-10 nm FEBIP, focusing on the possibilities for patterning
  • combined with CVD. As another example, 5 nm GaN quantum dots were deposited by Crozier [86] by EBID from a specially tailored precursor resulting in high-quality uniform deposits on a thin film of Si/SiO2. Shimojo [87] demonstrated the deposition of self-standing nanorods, 10 nm in diameter, by electrons
  • in the presence of a chloride-containing precursor. Remarkably, the nanorods do not contain the precursor material but are instead formed from the substrate material. 2.2.2.2 Electron beam induced etching. Focused electron beam induced etching is another direct-write technique used for high
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Published 14 Nov 2018

Graphene-enhanced metal oxide gas sensors at room temperature: a review

  • Dongjin Sun,
  • Yifan Luo,
  • Marc Debliquy and
  • Chao Zhang

Beilstein J. Nanotechnol. 2018, 9, 2832–2844, doi:10.3762/bjnano.9.264

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  • . Chen and co-workers [45] demonstrated that a SnO2–rGO sensor, which was synthesized via growing SnO2 nanorods on a GO surface, showed a response of 1.3 to 200 ppm NH3 with instant response/recovery times of only 8 s/13 s at room temperature. The rapid response and particularly the ultra-fast recovery
  • that the response can be significantly improved. ZnO is widely used as a typical wide-bandgap (3.37 eV) metal-oxide gas sensor material. However, the problem with ZnO gas sensors is their poor selectivity [66]. Li et al. [67] synthesized urchin-like ZnO nanorods–graphene via a facile solvothermal
  • active sites. Meng and co-workers [81] published an inspiring study, where they develop a microwave-assisted hydrothermal technique to grow CuO rods in GO suspension using cetyltrimethylammonium bromide (CTAB) as a soft template. The Cu2O nanorods–rGO hybrids obtained after annealing showed a porous
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Published 09 Nov 2018

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

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  • ][55][56], and nanotransfer printing, which was used to build stacks of gold nanorods or nanowires [4]. The production of nanoporous metal films or particles through a dealloying process also emerged as an effective tool for the facile formation of a large number of SERS-active hot spots [57][58][59
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Published 07 Nov 2018

Near-infrared light harvesting of upconverting NaYF4:Yb3+/Er3+-based amorphous silicon solar cells investigated by an optical filter

  • Daiming Liu,
  • Qingkang Wang and
  • Qing Wang

Beilstein J. Nanotechnol. 2018, 9, 2788–2793, doi:10.3762/bjnano.9.260

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  • XRD results revealed the morphology and a phase transition from cubic to hexagonal NaYF4. Photoluminescence spectra indicated that the hexagonal NaYF4:Yb3+/Er3+ nanorods convert near-infrared light of 980 nm to the visible light with wavelength peaks at 654, 541 and 522 nm. Hence, the upconverting
  • exhibited an 25% improved short-circuit current and an appreciable improvement of the near-infrared response of the external quantum efficiency. Moreover, because the size of the nanorods is comparable to the wavelength of visible light, the rods effectively scattered light, thus enhancing the visible light
  • UC effect; however, it does not imitate the actual solar irradiation in practical devices. In the present work, the upconverting NaYF4:Yb3+/Er3+ nanorods were synthesized thorugh a hydrothermal method and their UC effect on NIR light harvesting in a-Si:H solar cell was scrutinized by using a facile
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Published 31 Oct 2018

Oriented zinc oxide nanorods: A novel saturable absorber for lasers in the near-infrared

  • Pavel Loiko,
  • Tanujjal Bora,
  • Josep Maria Serres,
  • Haohai Yu,
  • Magdalena Aguiló,
  • Francesc Díaz,
  • Uwe Griebner,
  • Valentin Petrov,
  • Xavier Mateos and
  • Joydeep Dutta

Beilstein J. Nanotechnol. 2018, 9, 2730–2740, doi:10.3762/bjnano.9.255

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  • , Applied Physics Department, School of Engineering Sciences, KTH Royal Institute of Technology, Isafjordsgatan 22, SE-164 40 Kista Stockholm, Sweden 10.3762/bjnano.9.255 Abstract Zinc oxide (ZnO) nanorods (NRs) oriented along the crystallographic [001] axis are grown by the hydrothermal method on glass
  • nanorods; Q-switching; saturable absorption; solid-state lasers; zinc oxide; Introduction Zinc oxide (ZnO) is a well-known II–IV group wide-bandgap semiconductor (Eg = 3.37 eV), possessing a hexagonal wurtzite-type (sp. gr. P63mc) structure with unit cell parameters a = 3.25 Å, c = 5.20 Å. In recent years
  • , a lot of attention has been paid to the studies of ZnO nanostructures of various shapes, including oriented nanorods (NRs), nanowires, nanobelts, nanoparticles, etc. for versatile photonic applications [1][2]. ZnO NRs are especially attractive for short-wavelength nano-devices due to their high
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Published 23 Oct 2018

Low cost tips for tip-enhanced Raman spectroscopy fabricated by two-step electrochemical etching of 125 µm diameter gold wires

  • Antonino Foti,
  • Francesco Barreca,
  • Enza Fazio,
  • Cristiano D’Andrea,
  • Paolo Matteini,
  • Onofrio Maria Maragò and
  • Pietro Giuseppe Gucciardi

Beilstein J. Nanotechnol. 2018, 9, 2718–2729, doi:10.3762/bjnano.9.254

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  • tips are TERS-active, while 50% of the tips have a radius of curvature smaller than 35 nm. Light emission from the tip apex Tightly coupled plasmonic metals, such as nanorods dimers [51], nanocubes on surfaces [52], or TERS tips in contact with surfaces [53][54], emit light over a broad continuum, even
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Published 22 Oct 2018
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