Room temperature self-assembly of mixed nanoparticles into complex material systems and devices

The ability to manufacture nanomaterials with complex and structured composition using otherwise incompatible materials increasingly underpins the next generation of technologies. This is translating into growing efforts integrating a wider range of materials onto key technology platforms1 - in photonics, one such platform is silica, a passive, low loss and robust medium crucial for efficient optical transport2. Active functionalisation, either through added gain or nonlinearity, is mostly possible through the integration of active materials3, 4. The high temperatures used in manufacturing of silica waveguides, unfortunately, make it impossible to presently integrate many organic and inorganic species critical to achieving this extended functionality. Here, we demonstrate the fabrication of novel waveguides and devices made up of complex silica based materials using the self-assembly of nanoparticles. In particular, the room temperature fabrication of silica microwires integrated with organic dyes (Rhodamine B) and single photon emitting nanodiamonds is presented.Comment: Key words: nanotechnology, nanoparticles, self-assembly, quantum science, singel photon emitters, telecommunications, sensing, new materials, integration of incompatible materials, silica, glass, breakthrough scienc

House Prices and Home Ownership: a Cohort Analysis

England has very volatile house prices. We use pseudo-panel data spanning multiple house-price cycles over nearly forty years, to assess the extent to which house prices affect access to homeownership by age thirty, and whether differences in ownership rates persist. We find that ownership rates at age thirty have varied substantially, with this variation significantly related to prices. Measurement error problems – attenuation bias and other biases - complicate an analysis of the persistence of these differences in ownership. We use two methods - including one that develops the ideas of Deaton (1985) - to deal with this and find robust evidence that cohorts with low ownership rates at thirty close about 80% of the ownership gap by age forty.

Review and evaluation of past solar cell development efforts

Bibliography on photovoltaic effect and solar cell developmen

Review and evaluation of past solar cell development efforts Semiannual report, Jun. 1 - Nov. 30, 1967

Historical review of scientific work on photovoltaic effects and on energy conversion devices using this effec

Thin-film GaAs photovoltaic solar energy cells Final report

Thin film gallium arsenide photovoltaic solar cell

Thin film GaAs photovoltaic solar energy cells

Fabrication process for thin film gallium arsenide photovoltaic solar energy cell

Globalisation and Skills for Development in Rwanda and Tanzania

International Development,