Online ISSN
1750-0443
Micro & Nano Letters
Volume 6, Issue 11, November 2011
Volumes & issues:
Volume 6, Issue 11
November 2011
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- Author(s): Dejian Dai ; Jiyang Fan ; Nan Zhang
- Source: Micro & Nano Letters, Volume 6, Issue 11, p. 878 –880
- DOI: 10.1049/mnl.2011.0345
- Type: Article
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p.
878
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The authors synthesised the silica-coated multi-core SiC nanocrystal composites and studied their photoluminescence (PL) properties. The core–shell nanostructures exhibited strong luminescence stemming from quantum confinement effect with a tunable wavelength ranging from 418 to 439 nm under different excitations. The assembled thin film of the close-packed nanocomposites showed blue PL with substantially improved intensity relative to that of the pure SiC nanocrystals film. These robust blue emitting SiC/SiO2 core–shell nanostructures can serve as microlight sources with wide application potential in optoelectronics and life sciences. - Author(s): Baoxing Duan and Yintang Yang
- Source: Micro & Nano Letters, Volume 6, Issue 11, p. 881 –883
- DOI: 10.1049/mnl.2011.0426
- Type: Article
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p.
881
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A reduced bulk field (REBULF) super junction metal-oxide semiconductor field-effect transistor is designed for the first time with N+ buried layer in the P-type high resistance substrate. The substrate-assisted depletion effect, resulting from charge imbalance between the N and P-type pillars when the super junction is implemented on the P-type substrate, is suppressed due to the charge compensation by the N+ buried layer. The high electric field around the drain is reduced, thanks to the REBULF effect which causes the redistribution of the electric field in the drift region; thus the breakdown voltage is improved because the substrate supports more biases. The new structure features high breakdown voltage, low specific on-resistance and charge balance in drift region. - Author(s): M. Yeganeh and Z. Torabi
- Source: Micro & Nano Letters, Volume 6, Issue 11, p. 884 –887
- DOI: 10.1049/mnl.2011.0527
- Type: Article
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p.
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In this research, copper thin films were produced by electron beam physical vapour deposition on silicon substrates. Then, the oxidation kinetics of these films was investigated at 100 and 200°C by electrochemical and oxide patterning methods. Results showed that the oxidation kinetics at these temperatures obey the logarithmic rate law. Transportation of ions in the nanostructured materials occurs in the abundant grain boundaries and defects. It causes high oxidation rate in the short times at the beginning of the oxidation. In the following, the preferred tracks have been blocked gradually with time and as a result oxidation rate decreased. Moreover, the tensile stress in the copper thin film at 100°C did not cause yielding in the copper deposit. Therefore the application of copper deposits at this temperature is allowable. - Author(s): Yifu Zhang ; Meijuan Fan ; Fei Niu ; Yalan Zhong ; Chi Huang ; Xinghai Liu ; Baojun Wang ; Houbin Li
- Source: Micro & Nano Letters, Volume 6, Issue 11, p. 888 –891
- DOI: 10.1049/mnl.2011.0463
- Type: Article
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p.
888
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VO2(A) nanobelts are successfully synthesised through a facile hydrothermal approach using peroxovanadium (V) complexes and green solvent (ethanol) as the reducing agent without using any surfactants or templates. The as-obtained products were characterised by X-ray photoelectron spectroscopy, X-ray powder diffraction, scanning electron microscopy and transmission electron microscopy. The as-obtained VO2(A) nanobelts are with typical lengths up to several tens of micrometres, widths about 180 nm and thicknesses about 45 nm on average. The phase transition properties of VO2(A) was investigated by differential scanning calorimetry, indicating that it exhibits a strong phase transition at around 160.9°C. Furthermore, the optical switching properties of VO2(A) were first studied by the variable-temperature infrared spectra to the best of author's knowledge, and it was found that VO2(A) nanobelts could be used as the optical switch at different vibratory absorption bands. - Author(s): A.B. Joshi ; D. Bodas ; R. Gandhi ; K. Natarajan ; S.A. Gangal
- Source: Micro & Nano Letters, Volume 6, Issue 11, p. 892 –894
- DOI: 10.1049/mnl.2011.0513
- Type: Article
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This Letter reports the effect of piezoelectric (PZT) annealing on structural changes in silicon dioxide layer and for the first time its masking behaviour during PZT thin film processing. The PZT thin film is radio frequency sputtered on thermally grown silicon dioxide layer. The PZT on SiO2 film is annealed using conventional furnace annealing at 650°C, 120 min. The effect of annealing cycle on Pb and Zr diffusion in SiO2 is studied using energy dispersive X-ray analysis. The effect of potassium hydroxide (KOH) and tetra methyl ammonium hydroxide (TMAH) treatment on masking behaviour of PZT/SiO2 layer is investigated and the obtained results are presented. The structural changes in film are studied using scanning electron microscopy characterisation and the results are discussed. The process repeatability is tested with KOH and TMAH solutions. - Author(s): Hyunchul Park ; Yongdae Kim ; Eun Sang Jung ; Sejin Kwon
- Source: Micro & Nano Letters, Volume 6, Issue 11, p. 895 –899
- DOI: 10.1049/mnl.2011.0431
- Type: Article
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In this Letter, an implantable hybrid temperature sensor for use in a micro-scale space in power MEMS devices is proposed. The developed sensor use chrome silicide (CrSi2), which has a very high electromotive force, and nickel as a base metal. Since a thermocouple is an appropriate device to measure temperature at a specific spot, the correlations between the junction sizes and electromotive forces should be verified to reduce the junction size of the thermocouple. Furthermore, it is necessary to verify the performance of the thermocouple implanted in a microdevice by patterning a resistance temperature detector (RTD) on the side of the cold junctions to evaluate the reference temperature of the nickel. The Seebeck coefficients of the CrSi2 thin film thermocouples occur at approximately 70 µV/°C, and the values have been shown to be 1.8 times higher than those of commercial thermocouples. The value of the slope, αNi, which is the temperature coefficient of resistance (TCR) of the nickel RTD is 0.0063/°C at 20°C, whereas the reference value of the TCR of nickel, αNi-ref is 0.0067/°C at 20°C. The third-order polynomial compensation is 99.989% of the regression square value. Based on the verification, a prototype of the hybrid temperature sensor is implanted in a micro methanol–hydrogen peroxide auto-thermal reforming module by stacking six different layers that consist of temperature sensors for the base and different channel figures for the reforming reaction. - Author(s): Liqun Du ; Yaping Liu ; Chengbin Li
- Source: Micro & Nano Letters, Volume 6, Issue 11, p. 900 –903
- DOI: 10.1049/mnl.2011.0515
- Type: Article
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p.
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In SU-8 UV-LIGA technology, the precision and controllability of electroformed metal structure are not satisfied because of SU-8 photoresist swelling during electroforming process. To reduce SU-8 swelling and further improve the dimensional precision of electroformed microstructure, the authors originally introduce ultrasonic treatment in the fabrication process of SU-8 mould. The experimental results indicate that the swelling property of cross-linked cured SU-8 varies with ultrasonic time. SU-8 swelling is diminished when it is treated less than 15 min by ultrasonic, but the swelling is increased if the ultrasonic time is extended to 20 min. To explore ultrasonic treatment mechanism of SU-8 swelling, the contact angle between SU-8 and electroforming solutions in different ultrasonic time was measured, and the result presents that SU-8 surface hydrophilicity is affected by ultrasonic treatment. Besides, the contact angle trend is consistent with the curve of SU-8 swelling removal ratio in different ultrasonic time. Subsequently, ultrasonic treatment mechanism of SU-8 swelling is proposed based on ultrasonic mechanical scission of polymer chain and moisture diffusion mechanism. - Author(s): M. Sabet ; M. Salavati-Niasari ; F. Davar
- Source: Micro & Nano Letters, Volume 6, Issue 11, p. 904 –908
- DOI: 10.1049/mnl.2011.0406
- Type: Article
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p.
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CuInS2/CuS nanocomposite was prepared by a facile microwave approach via a new copper precursor, [bis(salicylidene) copper(II)] sulphate ([Cu(sal)2]SO4), indium chloride, InCl3 and eight sulphur sources. X-ray diffraction, scanning electron microscopy, energy-dispersive analysis of X-rays, ultraviolet–visible spectroscopy, photoluminescence spectroscopy and Fourier transform infrared were employed to characterise the obtained product. The effects of the sulphur source, solvent and microwave power and time on the morphology and size have been investigated. The fill factor, open-circuit voltage (Voc) and short-circuit current (Isc) have been achieved by the I–V curve. - Author(s): H. Emadi ; M. Salavati-Niasari ; F. Davar
- Source: Micro & Nano Letters, Volume 6, Issue 11, p. 909 –913
- DOI: 10.1049/mnl.2011.0432
- Type: Article
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p.
909
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Silver sulphide nanoparticles were synthesised by the reaction of silver nitrate and thioacetic acid by a sonochemical method. The as-synthesised nanoparticles, with an average size of ∼11.8 nm, were characterised by X-ray diffraction, scanning electron microscopy, photoluminescence spectroscopy, Fourier transform infrared spectra and energy-dispersive X-ray microanalysis. Facile preparation and separation are important features of this route. To the best of author's knowledge, it is the first time that thioacetic acid is used as S source for the synthesis of metal sulphide. - Author(s): Yuhang Chen ; Dun Niu ; Wenhao Huang
- Source: Micro & Nano Letters, Volume 6, Issue 11, p. 914 –917
- DOI: 10.1049/mnl.2011.0442
- Type: Article
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p.
914
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Dynamics of atomic force microscope probes near a two-dimensional grating in deionised water were investigated to explore the influence of microstructure-probe confined fluids. Experiments demonstrate that the oscillation characteristics could be deviated on the step element and on the bottom element of the grating even with the same controlling parameters. The probe responses indicate that different hydrodynamic contributions are presented on different microstructures. The squeeze fluid-induced interaction stiffness is slightly repulsive and the damping increases monotonously with the decrease of probe-sample separation to the nanoscale. In addition, the viscous damping is greater at the bottom element than that at the step element, which is verified by fluid-structure coupled finite-element simulations. - Author(s): Ar. Pourahmad ; A. Pourahmad ; S. Sohrabnezhad ; R. Rakhshaee
- Source: Micro & Nano Letters, Volume 6, Issue 11, p. 918 –921
- DOI: 10.1049/mnl.2011.0508
- Type: Article
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p.
918
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The optical and structural properties of the ternary ZnCdS nanocrystals in MCM-41 are reported. The samples were obtained by sulfidation of the Zn2+ and Cd2+ ion-exchange zeolite in a Na2S solution at room temperature. The final products (ZnCdS-MCM-41) were characterised by X-ray diffraction (XRD) pattern, scanning electron microscopy (SEM), transmission electron microscopy, infrared spectrometry and UV–vis spectroscopy. Their crystalline structure and morphology were studied by XRD and SEM. Exciton absorption peaks at higher energy than the fundamental absorption edge of bulk ZnS indicate quantum confinement effects in nanoparticles as a consequence of their small size. The absorption spectra show that the optical bandgap varies in the range 2.5–3.6 eV, depending on the semiconductor material and their relative concentration. - Author(s): G. Valdrè ; D. Moro ; G. Ulian
- Source: Micro & Nano Letters, Volume 6, Issue 11, p. 922 –926
- DOI: 10.1049/mnl.2011.0546
- Type: Article
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p.
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The search and characterisation of new nanomaterials and their application to nanomanipulate biomolecules are modern challenges of nanoscience and nanotechnology. Both synthetic and natural materials are widely investigated. In this Letter the authors report on the interaction of fundamental biomolecules with atomic-flat natural magnesium–aluminium-hydroxysilicate substrates. The surface affinity, self-assembly and nanopatterning of nucleotides, RNA and DNA, are compared. All biomolecules selectively adsorb on the surface of the magnesium hydroxide layer. Nucleotides are lined-up at the edges of magnesium hydroxide in long filamentary structures. RNA molecules are observed as agglomerates, globular domains separated by strands, and also in stable linearised structures. DNA can be bridged between two magnesium hydroxide layers in a stretched conformation longer than 2 µm (>6000 bp). - Author(s): Lixin Zhang ; Yixin Sun ; Hongfang Jiu ; Yuanzhong Wang ; Yuehua Fu ; Junyan Zhang
- Source: Micro & Nano Letters, Volume 6, Issue 11, p. 927 –931
- DOI: 10.1049/mnl.2011.0386
- Type: Article
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Uniform Gd2O3:Tb hollow microspheres have been successfully prepared via a urea-based homogeneous precipitation technique with colloidal melamine formaldehyde (MF) microspheres as templates followed by a subsequent calcination process. X-ray diffraction and Fourier transform infrared spectroscopy results show that the MF templates can be effectively removed, and the amorphous precursor has been converted to crystalline Gd2O3:Tb during the annealing process. Scanning electron microscopy and transmission electron microscopy images indicate that the Gd2O3:Tb hollow spheres inherit a spherical shape and good dispersion of MF templates, and the shell of the hollow spheres is composed of a large amount of uniform nanoparticles. The as-obtained Gd2O3:Tb microspheres with a spherical shape and hollow structure are uniform in size and distribution, and the thickness of the shell is about 110 nm. The Gd2O3:Tb3+ hollow microspheres exhibit bright strong green emission corresponding to the 5D4→7F5 transition of the Tb3+ ions luminescence under ultraviolet light excitation, which might find potential applications in fields such as drug delivery or biological labelling because of their excellent dispersing and luminescence properties. - Author(s): I. Tacchini ; E. Terrado ; A. Ansón ; M.T. Martínez
- Source: Micro & Nano Letters, Volume 6, Issue 11, p. 932 –936
- DOI: 10.1049/mnl.2011.0460
- Type: Article
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The MoS2 nanocrystals coupled with anatase nanoparticles were prepared by the solvothermal method at relatively low temperatures. It was determined that the materials consisted of 15–20 nm diameter anatase nanoparticles with highly dispersed MoS2 nanocrystals of approximately 3–7 nm in size. Visible light absorption in the MoS2–TiO2 samples increased with the MoS2 content. However, their lambda edges (λedge) remained almost identical at approximately 390 nm, meaning that MoS2 did not cause a red shift in the anatase bandgap energy. The hybrid MoS2-anatase materials had higher surface area (70–124 m2 g−1) than commercial TiO2 (P25) (50 m2 g−1). The MoS2-anatase hybrid nanocrystals showed enhanced activity in the oxidation of methylene blue in water under UV light irradiation. A photomechanism able to elucidate the observed dye decolourisation was suggested. - Author(s): A. Zarebidaki and S.R. Allahkaram
- Source: Micro & Nano Letters, Volume 6, Issue 11, p. 937 –940
- DOI: 10.1049/mnl.2011.0456
- Type: Article
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p.
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Electroless nickel–phosphorous (Ni–P)/nano-SiC (silicon carbide) composite coatings were deposited onto API-5L-X65 steel substrates in the absence of any surfactants at different concentrations of SiC nanoparticles in the plating bath. The hardness and corrosion resistance of the composite coatings with different content of SiC nanoparticles were measured. Moreover, the structure of the composite coatings were investigated by means of X-ray diffraction, whereas their morphologies and elemental composition were analysed using scanning electron microscope equipt with energy dispersive spectrometer. Results showed that co-deposited SiC nanoparticles contributed to increase the hardness, but the corrosion resistance of the composite coatings depends on dispersion of nanoparticles throughout the coatings and decreases because of agglomeration of nanoparticles and porosity of the coatings. - Author(s): Kaifa F. Wang and Baolin L. Wang
- Source: Micro & Nano Letters, Volume 6, Issue 11, p. 941 –943
- DOI: 10.1049/mnl.2011.0458
- Type: Article
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In this Letter, governing equations for the nanoscale plates with consideration of both surface effects and non-local elasticity are derived. The closed-form solutions for the critical buckling force of simply supported plates are obtained. Results show that the critical buckling force of the nanoplate increases with increasing surface effects and decreasing non-local parameter. The reduction of critical buckling force by shear deformation becomes significant as the thickness of the plate increases. To the authors' knowledge, this is the first Letter to deal with the stability of nanoplates by considering the combining effects of surface energy and non-local elasticity. - Author(s): Gwo-Huei Yang ; Wen-Tse Chang ; Jun-Dar Hwang ; Jun-Hung Lin ; Yu-Hung Chen
- Source: Micro & Nano Letters, Volume 6, Issue 11, p. 944 –946
- DOI: 10.1049/mnl.2011.0472
- Type: Article
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p.
944
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Low-temperature silicon-oxide films were grown on n-type Si surfaces using the liquid-phase deposition (LPD) method. Various temperature annealing was employed to improve the electrical properties of LPD-oxide. Metal–oxide–semiconductor (MOS) capacitors were fabricated to characterise the annealing effects on the n-type Si/LPD-oxide interface using current–voltage and capacitance–voltage measurements. Observations showed that the MOS capacitor with as-grown LPD-oxide has a large leakage current density of 2.1×10−5 A/cm2 and fixed oxide charge density of 2.8×1012 cm−2. After 500°C annealing in N2 environment for 30 min, the leakage current density and fixed oxide charge density are drastically reduced to 3.2×10−8 A/cm2 and 1.2×1012 cm−2, respectively. - Author(s): Xiaosheng Zhang ; Qianli Di ; Fuyun Zhu ; Guangyi Sun ; Haixia Zhang
- Source: Micro & Nano Letters, Volume 6, Issue 11, p. 947 –950
- DOI: 10.1049/mnl.2011.0487
- Type: Article
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This Letter reports the fabrication and optical characteristics of large-area wideband anti-reflective micro/nano dual-scale (MNDS) structures. Microstructures, including inverted pyramids and V-shaped grooves, with controllable geometry sizes (e.g. width, pitch and depth) are fabricated by anisotropic wet etching of silicon. Highly dense arrays of high-aspect-ratio nanostructures are then formed atop those microstructures by an improved maskless deep-reactive ion etching process. Compared with the black silicon surface made of nanostructures only, these MNDS structures further reduce the optical reflectance to less than 0.6%, and the total light absorption has almost reached 95%. More importantly, by combining the light trap of microstructures and the anti-reflectance of nanostructures, these MNDS structures can efficiently suppress the reflectance of incident light at a wideband range of wavelengths from the ultraviolet, through the solar spectrum, to the near-infrared region (i.e. from 200 to 2500 nm). - Author(s): R.A. Ismail
- Source: Micro & Nano Letters, Volume 6, Issue 11, p. 951 –954
- DOI: 10.1049/mnl.2011.0459
- Type: Article
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951
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Pulsed laser ablation in liquid (PLAL) was used to synthesise indium oxide (In2O3) nanocolloidal suspension. Colloidal In2O3 nanoparticles (NPs) are synthesised by pulsed laser ablation of high-purity indium target in distilled water with various laser fluences at room temperature. UV–vis absorption and transmission electron microscopy were conducted to determine the bandgap, size, distribution and shape of the NPs. The optical properties, size and the morphology of the synthesised In2O3 were influenced strongly by laser fluence and wavelength. Laser ablation of indium in water produced spherical In2O3 NPs with an average size of 30 nm and their distribution was nearly Gaussian type. - Author(s): A. Suslov ; P. Lama ; R. Dorsinville
- Source: Micro & Nano Letters, Volume 6, Issue 11, p. 955 –957
- DOI: 10.1049/mnl.2011.0471
- Type: Article
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The authors developed a method based on the concept of heterogeneous condensation on charged centres (ions), for the preparation of nanoparticles that allows the control synthesis of particles with sizes from 10 to 100 nm. The technique is used to fabricate thin films of silver nanoparticles. According to the scanning electron microscope measurements, the average size of the nanoparticles could be tuned between 10 and 100 nm. Optical extinction measurements show a shift in the absorption peak that correlates well with average size. - Author(s): R. Marandi ; M. Khosravi ; M.E. Olya ; B. Vahid ; M. Hatami
- Source: Micro & Nano Letters, Volume 6, Issue 11, p. 958 –963
- DOI: 10.1049/mnl.2011.0348
- Type: Article
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In this Letter, optimisation of the degradation of Reactive Orange 16 (RO16) by UV/TiO2 process in recirculated tubular photoreactors was investigated by central composite design (CCD). Immobilised TiO2 nanoparticles (100% anatase and average particle size of 6.7 nm) on the polyester support were used for the photocatalytic degradation. The applied TiO2 nanoparticles were characterised by X-ray diffraction and transmission electron microscopy. The morphology of immobilised TiO2 nanoparticles on the polyester support was observed by scanning electron microscopy. Using the CCD method, a model was developed for prediction of decolourisation efficiency as a function of independent operational parameters, including initial concentration of RO16 (5–25 mg/L), flow rate (5–15 L/h), temperature (14–46°C) and reaction time (30–150 min). The obtained results from the model are in good agreement with the experimental data (R2=0.9671 and Adj-R2=0.9383), and the optimum conditions for maximum degradation of RO16 can be calculated by the model. Moreover, this model is applicable to find individual and interactive effects of mentioned parameters. The mineralisation of RO16 was monitored by the chemical oxygen demand during the process. - Author(s): Jun Liu ; Shuijun Gu ; Kaiyu Pan ; Baoluo Gu ; Hanjiang Lai ; Hongliang Zhou ; Chaoqi He ; Huijun Zhang
- Source: Micro & Nano Letters, Volume 6, Issue 11, p. 964 –966
- DOI: 10.1049/mnl.2011.0439
- Type: Article
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High-quality cadmium selenide (CdSe) quantum dots (QDs) were synthesised in liquid paraffin with a mixture of octadecylamine and trioctylphosphine oxide as stabilising ligands. The synthesised CdSe QDs were characterised by ultraviolet–visible absorption and photoluminescence spectroscopy, transmission electron microscopy and selected area electron diffraction techniques. Compared with CdSe QDs synthesised in liquid paraffin stabilising with only oleic acid, CdSe QDs synthesised by this new route possess higher quantum yields, more symmetric and narrower emission spectra. The new route enables us to achieve high-quality CdSe QDs in less expensive solvent, liquid paraffin. - Author(s): Xiaojiao Yang ; Ying Liu ; Jun Li ; Xiaoyan Zhang
- Source: Micro & Nano Letters, Volume 6, Issue 11, p. 967 –970
- DOI: 10.1049/mnl.2011.0490
- Type: Article
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p.
967
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Ferromagnetic iron nanofibres with diameters around 120 nm were prepared by electrospinning the polyvinyl pyrrolidone (PVP)/Fe(NO3)3 sol–gel solution and subsequent heat treatment. Two different heat treatments were carried out. One is heating the precursor nanofibres at 700°C for 2 h in hydrogen atmosphere directly (one-step way). The other heat treatment method is calcining the precursor nanofibres at 550°C for 1 h in air to form the ferric oxide, which was deoxidised at 700°C for 1 h in hydrogen atmosphere afterwards (two-step way). The thermal stability of PVP/Fe(NO3)3 composite nanofibres was investigated using thermal gravimetric techniques. The morphologies and structures of iron nanofibres were characterised by X-ray diffraction and the field emission scanning electron microscope, equipped with an energy-dispersive X-ray spectrometer. Magnetic hysteresis scans were performed by a vibrating sample magnetometer at room temperature. Compared with the sample prepared by two-step heat treatment, the iron nanofibres obtained from one-step way present better morphologies and magnetic properties, with saturation magnetisation and the coercivities were 207.4 Am2 kg−1 and 4.1 KA m−1, respectively. - Author(s): Jingyue Fang ; Shiqiao Qin ; Xueao Zhang ; Guang Wang ; Fei Wang ; Shengli Chang
- Source: Micro & Nano Letters, Volume 6, Issue 11, p. 971 –974
- DOI: 10.1049/mnl.2011.0480
- Type: Article
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Three kinds of amino-functional mesoporous silica thin films (AF-MSTFs) have been directly synthesised by the sol–gel dip coating. The Fourier transform infrared spectra show that the amino groups are introduced into the nanopores of AF-MSTFs successfully by co-condensation technology. The X-ray diffraction (XRD) and transmission electron microscope (TEM) characterisations find that the AF-MSTFs prepared by different surfactants have highly ordered mesostructures with different nanopore sizes and morphologies. By using AF-MSTFs as templates, associated with neutralisation reaction and hydrogen reduction, gold nanoparticles (GNPs) are formed well within the mesostructures with a narrow size distribution, which is verified by the observation of XRD, TEM and energy-dispersive X-ray analyses. Ultraviolet–visible spectra of the nanocomposites are additional evidence of the existence of GNPs. What is more, they imply that the size effect of GNPs and the structure variation of AF-MSTFs can modulate the optical properties of the nanocomposites. - Author(s): K. Siva Kumar ; A. Divya ; S. Pavan Kumar ; B. Ajitha ; V.S. Chaithanya ; K. Jaya Prasad ; P. Sreedhara Reddy
- Source: Micro & Nano Letters, Volume 6, Issue 11, p. 975 –977
- DOI: 10.1049/mnl.2011.0516
- Type: Article
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Polyvinyl alcohol (PVA)-stabilised silver nanoparticles have been synthesised by the simple reduction process at different temperatures ranging from 60 to 90°C. The as-synthesised silver nanoparticles were analysed by X-ray diffraction (XRD), energy-dispersive analysis of X-rays, transmission electron microscope, UV–vis absorption spectroscopy and Fourier transform infrared (FTIR) spectroscopy. XRD studies showed that the samples exhibited cubic structure. The average particle size was found to be ∼50 nm. FTIR spectra revealed that the synthesised nanoparticles were successively capped by PVA. Optical absorption spectra confirmed the uniformity of as-prepared silver nanoparticles and the absorption peak was observed in the range 390–421 nm.
Synthesis and luminescence properties of silica-coated cubic silicon carbide nanocrystal composites
REBULF super junction MOSFET with N+ buried layer
Characterisation of copper thin film oxidation deposited by electron beam physical vapour deposition at low temperatures
Hydrothermal synthesis of VO2(A) nanobelts and their phase transition and optical switching properties
Effect of PZT annealing on structural changes in PZT/SiO2 surface and its masking behaviour to KOH/TMAH
Implantable hybrid chrome silicide temperature sensor for power MEMS devices
Mechanism analysis of ultrasonic treatment on SU-8 swelling in UV-LIGA technology
Facile one-step microwave to prepare CuInS2/CuS nanocomposite for solar cells
Synthesis and characterisation of silver sulphide nanoparticles by ultrasonic method
Influence of microstructure-confined fluids on the atomic force microscope probe dynamics
Ternary metal sulphide nanocrystals in MCM-41 nanoparticles matrix: preparation and properties
Nucleotides, RNA and DNA selective adsorption on atomic-flat Mg–Al-hydroxysilicate substrates
Facile synthesis and luminescence properties of Gd2O3:Tb hollow microspheres
Preparation of a TiO2–MoS2 nanoparticle-based composite by solvothermal method with enhanced photoactivity for the degradation of organic molecules in water under UV light
Corrosion assessment of electroless nickel–phosphorous/nanosilicon carbide composite coatings
Combining effects of surface energy and non-local elasticity on the buckling of nanoplates
Effect of N2-annealing on n-type Si metal–oxide–semiconductor capacitors by using liquid-phase deposition SiO2
Wideband anti-reflective micro/nano dual-scale structures: fabrication and optical properties
Preparation of colloidal In2O3 nanoparticles using nanosecond laser ablation in water
Fabrication and characterisation of nanostructured thin films of Ag synthesised using condensation on ion centres in gas
Photocatalytic degradation of an azo dye using immobilised TiO2 nanoparticles on polyester support: central composite design approach
Synthesis and photoluminescence properties of high-quality CdSe quantum dot in liquid paraffin
Influence of thermal decomposition on morphologies and magnetic properties of iron nanofibres via electrospinning
Template-assistant synthesis of gold nanoparticles with mesoporous silica thin films
Influence of synthesis temperature on synthesis of PVA-stabilised silver nanoparticles
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