Current research into semiconductor clusters is focused on the properties of quantum dots-fragments of semiconductor consisting of hundreds to many thousands of atoms-with the bulk bonding geometry and with surface states eliminated by enclosure in a material that has a larger band gap. Quantum dots exhibit strongly size-dependent optical and electrical properties. The ability to join the dots into complex assemblies creates many opportunities for scientific discovery.

Semiconductor Clusters, Nanocrystals, and Quantum Dots

Dye-sensitized solar cells (DSCs) offer the possibilities to design solar cells with a large flexibility in shape, color, and transparency. DSC research groups have been established around the worl ...

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Dye-Sensitized Solar Cells

Novel physical phenomena can emerge in low-dimensional nanomaterials. Bulk MoS2, a prototypical metal dichalcogenide, is an indirect bandgap semiconductor with negligible photoluminescence. When the MoS2 crystal is thinned to monolayer, however, a strong photoluminescence emerges, indicating an indirect to direct bandgap transition in this d-electron system. This observation shows that quantum confinement in layered d-electron materials like MoS2 provides new opportunities for engineering the electronic structure of matter at the nanoscale.

Emerging Photoluminescence in Monolayer MoS2

Bulk nanostructured materials from severe plastic deformation

Nanotechnology is a multidisciplinary field, which covers a vast and diverse array of devices derived from engineering, biology, physics and chemistry. These devices include nanovectors for the targeted delivery of anticancer drugs and imaging contrast agents. Nanowires and nanocantilever arrays are among the leading approaches under development for the early detection of precancerous and malignant lesions from biological fluids. These and other nanodevices can provide essential breakthroughs in the fight against cancer.

Cancer nanotechnology: opportunities and challenges.

Wet-etched mesoporous silicon is normally dried in the air, but this limits the range of porosities and surface areas achievable, due to capillary force-induced collapse of the silicon skeleton. This updated review discusses the various alternative drying techniques with particular attention paid to supercritical/critical point drying, a powerful technique applicable to all physical forms of porous silicon. Optimized etching and supercritical drying conditions have recently led to the achievement of silicon powder surface areas up to 1125m/g from anodized p wafers and pore volumes up to 4.66 ml/g from anodized p + wafers. Supercritical drying has also been used to minimize “bundling” of porous silicon nanowires in closely spaced arrays.

https://link-springer-com-443.webvpn.jmu.edu.cn/content/pdf/10.1007%2F978-3-319-71381-6_57.pdf

Drying Techniques Applied to Porous Silicon

The invention provides the use of a pharmaceutical compositions comprising a cytotoxic drug and a porous carrier material in methods for the treatment of cancer by chemo-brachytherapy, in particular intra-tumoural administration.

Methods of treatment of cancer using a composition comprising a cytotoxic drug and a porous carrier material

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Impact of Mesoporous Silicon Template Pore Dimension and Surface Chemistry on Methylammonium Lead Trihalide Perovskite Photophysics

The invention relates to the treatment of cancer. In particular the invention relates to an internal therapeutic product comprising: (i) an anti-cancer component selectedfrom one or both of: a radionucleotide, a cytotoxic drug; and (ii) a silicon component selected from one or more of: resorbable silicon, biocompatible silicon, bioactive silicon, porous silicon, polycrystalline silicon, amorphous silicon, and bulk crystalline silicon, the internal therapeutic product being for the treatment of cancer.

Silicon implants comprising a radionuclide for use in brachytherapy

The present invention relates to devices and methods for the detection of breast cancer. The devices comprise, and the methods use, silicon based structures and materials to collect fluid from a breast, or each breast, of a human subject. The fluid may then be tested for markers that could indicate the early stages of cancer.

Leigh T. Canham

Papers

Drying Techniques Applied to Porous Silicon

Methods of treatment of cancer using a composition comprising a cytotoxic drug and a porous carrier material

Impact of Mesoporous Silicon Template Pore Dimension and Surface Chemistry on Methylammonium Lead Trihalide Perovskite Photophysics

Silicon implants comprising a radionuclide for use in brachytherapy

Collection system for mammary fluids