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  • 2005-2009  (18)
  • 1
    Electronic Resource
    Electronic Resource
    The Effect of CdS Nanorods on the Morphology of Electrospun Poly(Vinyl Pyrrolidone) Products (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 121-123 (Mar. 2007), p. 109-112 
    Details
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Notes: The CdS/PVP fibers have been successfully prepared by electrospinning. Scanningelectron microscopy (SEM), transmission electron microscopy (TEM) and UV-Vis absorption spectrawere used to characterize the structure. Results showed that the concentration of polymer solutionsand the CdS amount in the solvent influenced the morphology and the diameter of the electrospunfibers. The electrospinning from CdS/PVP in ethanol produced a structure having a combination offibers, ribbons, beads and an unexpected half hollow sphere (HHS) structure. When the weight ratioof CdS:PVP was kept at 1:1000, the morphologies of electrospun products changed from HHS, tobeaded fibers and ribbons, to beaded fibers, and to bead-free fibers with the increasing of the PVPconcentration
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/23/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.121-123.109.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Preparation and Characterization of Poly(Vinyl Alcohol) Nanofibers Containing ZnS Nanopaticles via Electrospinning (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 121-123 (Mar. 2007), p. 641-644 
    Details
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Notes: Poly(vinyl alcohol) (PVA) nanofibers containing functional ZnS nanoparticles have beensuccessfully prepared by electrospinning technique. The ZnS/PVA mixture solution forelectrospinning was obtained by reacting Zn(Ac)2 with Na2S in the PVA aqueous solution.Scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-raydiffraction (XRD) analyses revealed that the morphology of the ZnS/PVA nanofibers consists of thedispersion of ZnS nanopaticles with cubic structure in PVA nanofibers. The coordinations between–OH and Zn2+ were characterized by infrared spectroscopy. The photoluminescence spectroscopystudies showed that the ZnS/PVA nanofibers had a strong blue-violet emission band at 450 nm,which may be associated with defect-related emission of the ZnS
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/23/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.121-123.641.pdf
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  • 3
    Electronic Resource
    Electronic Resource
    The Micro-Patterning of Polymer in the Presence of Porphyrin via Electrospinning (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 121-123 (Mar. 2007), p. 653-656 
    Details
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Notes: Functional self-assembled structure with well-defined shapes and dimensions are of greatcurrent interest. Porphyrins are attractive building manifold patterning for these structures becauseof their electronic, optical, and catalytic properties. In this paper, we report a novel technique for theassembly patterning of polymers. An Electrospinning process was used to create patterning withdiameter ranging from 3 μm to 4 μm and length of up to several hundred micrometers in thepresence of Zinc Porphyrin. Scanning electron microscopy (SEM), UV- visible spectra and EDXspectra were used to characterize the patterning. The results indicated that the patterning dependedon the concentration of Porphyrin and the operational conditions
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/23/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.121-123.653.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Fabrication and Characterization of Carbon Nanofibers Carrying Ag Nanoparticles via Electrospinning (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 121-123 (Mar. 2007), p. 123-126 
    Details
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Notes: The carbon-nanofibers carrying Ag nanoparticles (Ag/CNF) have been successfullyobtained via electrospinning followed by calcination. For it, AgNO3/polyacrylonitrile (PAN) fiberswere firstly prepared as an intermediate and then the intermediate was calcined at 600℃ for 4h totransit the PAN nanofibers to the CNF and reduce AgNO3 to the Ag nanoparticles. Transmissionelectron microscope (TEM), Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction(XRD) were used to characterize their morphologies and structures. The results show that thediameters of the Ag nanoparticles and CNF are 5 nm and 180 nm on the average, respectively. Mostof the Ag nanoparticles were located on the surface of carbon nanofibers
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/23/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.121-123.123.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Array of Polymeric Nanofibers via Electrospinning (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 121-123 (Mar. 2007), p. 583-586 
    Details
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Notes: The electrospinning technology has been used to fabricate organic nanofibers. As the nanofibersare aligned parallel and crossed, unique electrical and photonic properties are generated. Hereby, aframe of copper thread with a diameter of 0.8 mm was used to collect and align polymer nanofibers.SEM results showed that the nanofibers were parallel aligned between two copper threads. Thecrossed nanofibers arrays were obtained by layer-by-layer assembling on the parallel nanofibers.The influence factors, such as distance between two copper threads and collection time etc, wereinvestigated
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/23/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.121-123.583.pdf
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  • 6
    Electronic Resource
    Electronic Resource
    Elastic Properties of L1〈sub〉0〈/sub〉-Ordered Single Crystals (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 26-28 (Oct. 2007), p. 221-224 
    Details
    ISSN: 1662-8985
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The temperature dependence of single-crystal elastic constants of L10-orderedsingle-crystals of FePd . A complete set of elastic constants has been determined with the resonanceultrasound spectroscopy technique. The compounds clearly show a tetragonal elastic anisotropy, c11 〈c33 and c44 〈 c66. The temperature dependencies of the anisotropies are not simply explained by thevariation of axial ratio (c/a) of the crystal
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.26-28.221.pdf
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  • 7
    Electronic Resource
    Electronic Resource
    The Effects of Organic Solvent on the Electrospinning of Water-Soluble Polyacrylamide with Ultrahigh Molecular Weight (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 121-123 (Mar. 2007), p. 113-116 
    Details
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Notes: The effects of an organic solvent on the electrospinning of water-soluble polyacrylamidewith ultrahigh molecular weight were investigated. An organic solvent, DMF, was introduced to thepolyacrylamide aqueous solution and subsequently, transparent spinning solutions were obtained.The spinning solution was electrospun at the voltage of 10 kV and the electrospun products wereexamined by scanning electron microscopy (SEM). Results indicated that all the electrospinningproducts including colloidal particles, beaded fibers and smooth fibers were fabricated in theDMF/H2O bi-component solvent and the morphology of electrospun products changed from smoothfiber to beaded fiber with the increasing amount of DMF used
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/23/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.121-123.113.pdf
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  • 8
    Electronic Resource
    Electronic Resource
    An Electrospinning Approach to Polyaniline Nanofibers by Template (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 121-123 (Mar. 2007), p. 579-582 
    Details
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Notes: Polyaniline doped with camphorsulfonic acid (PANI.HCSA) nanofibers have beensuccessfully prepared using “nanofibers template” via electrospinning. The PVA nanofibers wereused as a template to get the PANI/PVA composite fibers. After removing the template by heattreatment, the PANI fibers were obtained. Scanning electron microscope (SEM) with the EnergyDispersive X-Ray Spectrometer software (EDX) and FT-IR spectra were used to characterize thecomposite fibers and the PANI.HCSA nanofibers. The average diameters of the composite fibersobtained and PANI fibers were 920 nm and 530 nm, respectively
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/23/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.121-123.579.pdf
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  • 9
    Electronic Resource
    Electronic Resource
    Paracolloid of the Skin (2005)
    Oxford, UK; Malden, USA : Blackwell Publishing Ltd/Inc.
    Journal of cutaneous pathology 32 (2005), S. 0 
    Details
    ISSN: 1600-0560
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The concept of paracolloid was raised by Dupre et al. in 1979 to describe a rare lesion, in which large amounts of homogeneous, pale pink, non-amyloid material in sun-exposed skin. The deposits consisted of haphazardly arranged microfilaments of 3–4 nm in diameter. Here we report another case. A 54-year-old white male presented with a 2 × 2 cm boggy, erythematous plaque involving the bridge and tip of the nose for two years. The lesion enlarged slowly and intermittently drained pinkish fluid. A shave biopsy revealed extensive homogeneous, pale pink material with fissure and clefts in the dermis. The deposits wrapped up hair follicles and sebaceous glands, and superficially mixed with scattered solar elastic fibers and globules. There were scattered fibroblasts, focal mild perivascular and perifollicular lymphocyte and plasma cells. Adjacent skin showed prominent solar elastosis. A thin grenz zone was present abutting an atrophic epidermis with actinic keratosis. The deposits showed faint Congo red stain with focal weak apple-green birefringence, faint PAS stain, and negative Verhoeff-van Gieson stain. Masson’s trichrome stain and immunohistochemical stain for collagen IV were negative.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.0303-6987.2005.320hn.x
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  • 10
    Electronic Resource
    Electronic Resource
    Atomic Resolution Imaging of Au Nanocluster Dispersed in TiO2, SrTiO3, and MgO (2005)
    Oxford, UK : Blackwell Science Inc
    Journal of the American Ceramic Society 88 (2005), S. 0 
    Details
    ISSN: 1551-2916
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Gold nanoclusters dispersed in single crystal TiO2, MgO, and SrTiO3 have been prepared by ion implantation at 300–975 K and subsequent annealing at 1275 K for 10 h. High-resolution transmission electron microscopy and high-angle annular dark field (HAADF) imaging in aberration corrected scanning transmission electron microscope (STEM) have been used to characterize the microstructure of the gold nanoclusters dispersed materials. STEM-HAADF imaging with atomic resolution has directly revealed for all three materials that Au atoms partially occupy cation lattice positions. Cavities up to several tens of nanometers were observed in MgO and SrTiO3. The cavities and gold clusters are spatially associated in MgO and SrTiO3, indicating a strong interaction between the Au cluster and cavities. For MgO and SrTiO3, the faceting planes appear to be the same for both nanometer-sized cavity and the Au cluster, demonstrating that both the surface energy and the interfacial energy between Au cluster and the matrix are lowest on these planes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1551-2916.2005.00579.x
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