6 optical properties

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  • The ‘electronic book’ is a feature of this early 21st Century. I have been in academic life for several decades, and have I hope responded with flexibility to changes over that time. I have been using a word processor on a daily basis for twenty years and am deeply conscious of the advantages over even the most advanced typewriters. The first time I gave a presentation using Microsoft PowerPoint was in India about six years ago. I have with enthusiasm used PowerPoint for every invited talk or conference contribution I have given since. Such talks and contributions have been in...

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  • Assadi et al. Nanoscale Research Letters 2011, 6:357 http://www.nanoscalereslett.com/content/6/1/357 NANO REVIEW Open Access Structural and electronic properties of Eu- and Pd-doped ZnO Mohammad Hussein Naseef Assadi1,2, Yuebin Zhang2, Rong-Kun Zheng1, Simon Peter Ringer1 and Sean Li2* Abstract Doping ZnO with rare earth and 4d transition elements is a popular technique to manipulate the optical properties of ZnO systems. These systems may also possess intrinsic ferromagnetism due to their magnetic moment borne on 4f and 4d electrons.

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  • Gardelis et al. Nanoscale Research Letters 2011, 6:227 http://www.nanoscalereslett.

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  • Fang et al. Nanoscale Research Letters 2011, 6:237 http://www.nanoscalereslett.com/content/6/1/237 NANO REVIEW Open Access Measurement of the extinction coefficients of magnetic fluids Xiaopeng Fang, Yimin Xuan*, Qiang Li Abstract A novel spectral transmittance approach for measuring the extinction coefficient of magnetic fluids is proposed. The measuring principle and accuracy of the approach are analysed. Experiments are conducted to measure the extinction coefficient of magnetic fluids with different particle volume fractions.

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  • Ray et al. Nanoscale Research Letters 2011, 6:224 http://www.nanoscalereslett.com/content/6/1/224 NANO EXPRESS Open Access Structural and optical properties of germanium nanostructures on Si(100) and embedded in high-k oxides Samit K Ray*, Samaresh Das, Raj K Singha, Santanu Manna, Achintya Dhar Abstract The structural and optical properties of Ge quantum dots (QDs) grown on Si(001) for mid-infrared photodetector and Ge nanocrystals embedded in oxide matrices for floating gate memory devices are presented.

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  • Taylor et al. Nanoscale Research Letters 2011, 6:225 http://www.nanoscalereslett.com/content/6/1/225 NANO EXPRESS Open Access Nanofluid optical property characterization: towards efficient direct absorption solar collectors Robert A Taylor1*, Patrick E Phelan1, Todd P Otanicar2, Ronald Adrian1, Ravi Prasher1 Abstract Suspensions of nanoparticles (i.e., particles with diameters

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  • Dynamic Semiconductor RAM Structures Industrial Robots Inorganic Fibres & Composite Materials Reverse Osmosis Optical Fibres Nickel &Cobalt Extraction Using Organic Compounds Solid State Video Cameras Microprocessors Molecular Sieve Catalysts Methods of Abating Residual Formaldehyde in Industrial Resins Universal Computer Interfaces Protein Folding Mercury Cadmium Te IIu ride Imagers

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  • Cd1-xMnxS nanoparticles (NPs) with size quantum confinement belong to the diluted magnetic semiconductor (DMS) quantum dot (QD) class of materials that has been widely studied in the last few years. The study of quasi-zero-dimensional Diluted Magnetic Semiconductors (DMS), such as Cd1-xMnxS Quantum Dots (QDs), is strongly motivated due to the localization of magnetic ions in the same places as the free-like electron and hole carriers occurring in these nanomaterials [1,2].

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  • Kang et al. Nanoscale Research Letters 2011, 6:236 http://www.nanoscalereslett.com/content/6/1/236 NANO EXPRESS Open Access Anti-reflective nano- and micro-structures on 4H-SiC for photodiodes Min-Seok Kang1, Sung-Jae Joo2, Wook Bahng2, Ji-Hoon Lee1, Nam-Kyun Kim2, Sang-Mo Koo1* Abstract In this study, nano-scale honeycomb-shaped structures with anti-reflection properties were successfully formed on SiC. The surface of 4H-SiC wafer after a conventional photolithography process was etched by inductively coupled plasma.

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  • In this article, we report on the preparation of CdSe quantum dots (QDs) by sol-gel method and their optical properties. The average size of QDs is also estimated by using various ways, such as the Scherer’s formula, The Effros-Brus-Kayanuma’s theoretical expression, TEM etc. The TEM images of samples show that the mean sizes of QDs are 4 nm. The mean sizes of QDs are smaller than that of other methods and arranging from 2 to 3.6 nm.

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  • Chlorite dismutase (EC, an enzyme capable of reducing chlorite to chloride while producing molecular oxygen, has been characterized using EPR and optical spectroscopy. The EPR spectrum of GR-1 chlorite dis-mutase shows two different high-spin ferric heme species, whichwe have designatednarrow(gx,y,z¼6.24, 5.42, 2.00) andbroad(gz,y,x ¼6.70, 5.02, 2.00).

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  • Fibre Optic Thermometers Properties of Optical Fibres Dielectric opticalfibre, which is also referred to as a light guide, is composed of a rod core surrounded by a sheath as shown in Figure 6.1 . The core, which conducts the electromagnetic wave, has a refractive index, nj , while the sheath, which contains the wave within the core, has a refractive index, n2 . To ensure that the wave is contained in the core it is necessary that the condition nj n2 is satisfied. The electromagnetic waves incident on the front part of the optical fibre, within the angle cone, 2a,...

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