| 1. |
- Li, Shanghua, 1980-, et al.
(författare)
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Nanocomposites of polymer and inorganic nanoparticles for optical and magnetic applications
- 2010
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Ingår i: Nano reviews. - : CoAction Publishing. - 2000-5121. ; 1, s. 5214-
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Tidskriftsartikel (refereegranskat)abstract
- This article provides an up-to-date review on nanocomposites composed of inorganic nanoparticles and the polymer matrix for optical and magnetic applications. Optical or magnetic characteristics can change upon the decrease of particle sizes to very small dimensions, which are, in general, of major interest in the area of nanocomposite materials. The use of inorganic nanoparticles into the polymer matrix can provide high-performance novel materials that find applications in many industrial fields. With this respect, frequently considered features are optical properties such as light absorption (UV and color), and the extent of light scattering or, in the case of metal particles, photoluminescence, dichroism, and so on, and magnetic properties such as superparamagnetism, electromagnetic wave absorption, and electromagnetic interference shielding. A general introduction, definition, and historical development of polymer-inorganic nanocomposites as well as a comprehensive review of synthetic techniques for polymer-inorganic nanocomposites will be given. Future possibilities for the development of nanocomposites for optical and magnetic applications are also introduced. It is expected that the use of new functional inorganic nano-fillers will lead to new polymer-inorganic nanocomposites with unique combinations of material properties. By careful selection of synthetic techniques and understanding/exploiting the unique physics of the polymeric nanocomposites in such materials, novel functional polymer-inorganic nanocomposites can be designed and fabricated for new interesting applications such as optoelectronic and magneto-optic applications.
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| 2. |
- Noroozi, Mohammad, et al.
(författare)
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Fabrications of size-controlled SiGe nanowires using I-line lithography and focused ion beam technique
- 2014
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Ingår i: ECS Transactions. - : The Electrochemical Society. - 1938-5862 .- 1938-6737. ; , s. 167-174
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Konferensbidrag (refereegranskat)abstract
- In this study, a novel method using Focus Ion Beam (FIB) technique was applied to scale down Si1-xGex wires (x=0.27-0.57) to 20 nm width. Originally, the wires were processed by using Iline lithography and dry etching of SiGe on oxide (SGOI) substrates. The SGOI wafers were processed through condensation method where a SiGe/Si layer was grown in the beginning on SOI wafers and oxidized at 850-1050 °C. The shape of the nanowires (NWs) during the successive FIB cutting was examined by scanning electron microscopy (SEM) and the carrier transport through the NWs was checked by resistivity measurements. The contact resistance was reduced by Ni-silicide prior to metallization. The fabricated NWs were also suspended by tilting FIB. The results present the limitations and challenges of FIB technique to create NWs for advanced sensors and transistors.
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| 3. |
- Toprak, Muhammet, 1973-, et al.
(författare)
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Annex : Synthesis of Engineered Nanomaterials
- 2012
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Ingår i: Adverse Effects of Engineered Nanomaterials: Exposure, Toxicology, and Impact on Human Health. - : Elsevier BV. - 9780123869401 ; , s. 315-331
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 4. |
- Toprak, Muhammet S, 1973-, et al.
(författare)
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ANNEX : Synthesis of Nanomaterials
- 2012
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Ingår i: Adverse Effects of Engineered Nanoparticles. - : Academic Press. - 9780123869401
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 5. |
- Toprak, Muhammet S, 1973-, et al.
(författare)
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Handbook on the Toxicology of Metals
- 2014. - 4
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Ingår i: Handbook on the Toxicology of Metals. - : Elsevier. - 9780444594532 ; , s. 75-112
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Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- Engineered nanomaterials hold great potential in many sectors of society, not least in medicine. However, the increasing production and use of engineered nanomaterials also raises concerns about inadvertent exposure and the potential for adverse effects on human health and the environment. This chapter provides an overview of metal and metal oxide nanoparticles, their applications, and the potential for human exposure. This is followed by a discussion of general principles of nanoparticle-induced toxicity and methods for toxicity testing of nanomaterials. Careful assessment of the material properties is required for a full understanding of nanomaterial toxicity; a section of the chapter is therefore devoted to physicochemical characterization. This is followed by a detailed description of the current knowledge concerning 12 of the most important metal and metal oxide nanoparticles, with a systematic evaluation of in vitro (cell culture) and in vivo (animal) toxicity studies. Ecotoxicological effects are not discussed because the chapter is focused on implications for human health.
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