We present the results of a comprehensive photoluminescence study of defect centres in single SiO2 nanoparticles. We show that the photo-physical properties of the luminescent centres strongly resemble those of single dye molecules. However, these properties exhibit a large variability from particle to particle due to the different local chemical environment around each centre of each particle....

Vitamin C has antioxidant property. It is the component of plasma and extracellular fluids and so can control lipid peroxidation of cellular membranes, thus maintaining the redox integrity of cells. Vitamin C along with Zinc enhances the immunity of the body. It has therapeutic potential against neurodegenerative disease like Alzheimer’s disease. It has effects on increasing incidence of respir...

Echo mapping exploits light travel time delays, revealed by multi-wavelength variability studies, to map the geometry, kinematics, and physical conditions of reprocessing sites in photo-ionized gas flows. In AGNs, the ultra-violet to near infra-red light arises in part from reprocessing of EUV and X-ray light from a compact and erratically variable source in the nucleus. The observed time delay...

This study presents the optimal drift design method to control the elastic and inelastic performance of steel moment frames. This is formulated as a problem that minimizes the lateral displacement at the top of a building satisfying the constraints on the total structural weight and the column-to-beam strength ratios at the joints. This uses the resizing method based on the linear static analys...

Modern client platforms, such as iOS, Android, Windows Phone 7, and Windows 8, have progressed from a per-user isolation policy, where users are isolated, but a user’s applications run in the same isolation container, to an application isolation policy, where different applications are isolated from one another. However, this is not enough because mutually distrusting content can interfere with...

We reconstruct a controllable model of a person from a large photo collection that captures his or her persona, i.e., physical appearance and behavior. The ability to operate on unstructured photo collections enables modeling a huge number of people, including celebrities and other well photographed people without requiring them to be scanned. Moreover, we show the ability to drive or puppeteer...

Two-component self-assembly supramolecular coordination complexes with particular photo-physical property, wherein unique donors are combined with a single metal acceptor, can be utilized for many applications including in photo-devices. In this communication, we described the synthesis and characterization of two-component self-assembly supramolecular coordination complexes (SCCs) bearing tria...

This chapter describes the state-of-the-art techniques for constructing photo-realistic three dimensional models of physical objects using range and intensity images. In general, construction of such models entails four steps: First, a range sensor must be used to acquire the geometric shape of the exterior of the object. Objects of complex shape may require a large number of range images viewe...

We have used two-photon photoemission to probe the dynamics of the long-lived triplet excitons in pristine and photo-oxidized lms of poly[2-methoxy,5-(2'-ethylhexoxy)-1,4-phenylenevinylene] (MEH-PPV). We use a rate equation model to explain the intensity dependence of the total photoelectron yield in terms of the relaxation dynamics of the triplet excitons. Observations of the pristine lms indi...

In vivo imaging applications typically require carefully balancing conflicting parameters. Often it is necessary to achieve high imaging speed, low photo-bleaching, and photo-toxicity, good three-dimensional resolution, high signal-to-noise ratio, and excellent physical coverage at the same time. Light-sheet microscopy provides good performance in all of these categories, and is thus emerging a...