Author
Leigh T. Canham
Other affiliations: Defence Research Agency, Defence Science and Technology Laboratory, University of St Andrews
Bio: Leigh T. Canham is an academic researcher from University of Birmingham. The author has contributed to research in topics: Porous silicon & Silicon. The author has an hindex of 42, co-authored 160 publications receiving 18268 citations. Previous affiliations of Leigh T. Canham include Defence Research Agency & Defence Science and Technology Laboratory.
Papers published on a yearly basis
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33 citations
TL;DR: This method exploits a combination of capillary forces and selective interfacial coupling chemistry to produce isolable macroscale structures possessing a diverse range of geometries through simple mixing rather than intricate molding processes.
Abstract: We describe in this account a general, yet facile strategy for the directed assembly of bioactive composite materials comprised of an erodible organic polymer such as polycaprolactone and physiologically-resorbable inorganic mesoporous silicon. This method exploits a combination of capillary forces and selective interfacial coupling chemistry to produce isolable macroscale (mm sized) structures possessing a diverse range of geometries through simple mixing rather than intricate molding processes. Furthermore, we demonstrate the ability of such constructs to dissociate into their individual building blocks, with the concomitant release of embedded model compounds in a sustained manner.
32 citations
TL;DR: The suitability of ion-beam analysis techniques in quantifying the composition of mesoporous silicon nanostructures has been critically examined using films of moderate porosity (55%) prepared on n+ substrates as discussed by the authors.
Abstract: The suitability of ion‐beam‐analysis techniques in quantifying the composition of mesoporous silicon nanostructures has been critically examined using films of moderate porosity (55%) prepared on n+ substrates. The effects of room‐temperature aging of as‐etched and thermally oxidized porous silicon, the oxidation conditions chosen to render the material luminescent, have been carefully monitored, as have the effects of both ion‐beam irradiation and storage of samples in vacuo. It is shown that the concentrations of the three major impurities oxygen, carbon, and hydrogen can be appreciably altered during analyses, thereby limiting the reliability of the techniques, as conventionally applied to porous silicon. The use of appropriate capping layers, which should alleviate the problem, is recommended.
31 citations
12 Oct 2000
TL;DR: In-vitro and in-vivo evidence that silicon surfaces can be engineered to have bone-bonding potential, and that highly porous silicon can be biodegradable in the human body, is presented.
Abstract: Silicon, the dominant semiconductor, has not been actively developed as a biomaterial, despite the attractiveness of chip-based microsystems for therapeutic applications. There is now both in-vitro and in-vivo evidence that silicon surfaces can be engineered to have bone-bonding potential, and that highly porous silicon can be biodegradable in the human body.
30 citations
TL;DR: In this article, a weak three-phonon momentum-conserving phonon satellite in photoluminescence excitation spectra of porous silicon has been observed and the exchange splitting of the luminescent exciton is dramatically enhanced by quantum confinement, in agreement with theoretical predictions.
28 citations
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TL;DR: In this article, the authors focus on the properties of quantum dots and their ability to join the dots into complex assemblies creates many opportunities for scientific discovery, such as the ability of joining the dots to complex assemblies.
Abstract: 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.
10,737 citations
TL;DR: Dye-sensitized solar cells (DSCs) offer the possibilities to design solar cells with a large flexibility in shape, color, and transparency as mentioned in this paper, and many DSC research groups have been established around the world.
Abstract: 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 ...
8,707 citations
TL;DR: This observation shows that quantum confinement in layered d-electron materials like MoS(2), a prototypical metal dichalcogenide, provides new opportunities for engineering the electronic structure of matter at the nanoscale.
Abstract: 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.
7,886 citations
TL;DR: In this article, the authors present methods of severe plastic deformation and formation of nanostructures, including Torsion straining under high pressure, ECA pressing, and multiple forging.
5,763 citations
TL;DR: Nanotechnology is a multidisciplinary field, which covers a vast and diverse array of devices derived from engineering, biology, physics and chemistry that can provide essential breakthroughs in the fight against cancer.
Abstract: 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.
4,241 citations