Trinity College Dublin
|As first author||18|
|As last author||47|
Justin D. Holmes(13)
John E Sader(7)
Hugh G Manning(7)
Allen T Bellew(5)
Eoin K McCarthy(4)
Alan P Bell(4)
... and 51 others
These arethe5 unique sources for John J Boland's 82 publications. A single publication may appear in multiple sources. Click on a name or publication count to see the publications for a particular source.
|Ireland -> Trinity College Dublin||72|
|Ireland -> Trinity College Dublin -> PubMed||36|
|Ireland -> University College Cork||12|
|Ireland -> University College Cork -> PubMed||3|
|Ireland -> University College Dublin||1|
The present invention provides a method of producing well defined crystalline nano-wires without complicated multistep manipulation at relatively low temperature. Facile formation of NW materials, particularly metals with a controlled diameter, length and placement. In one embodiment the invention provides a method of growing nano-wires comprising the steps of depositing a first layer of material and a second layer of material on a substrate
A method for producing an array of cavities (2) in a polymer film (1) comprises preparing a polymer/solvent solution and drop casting a thin film (6) of the solution on a substrate. The film solution (6) is subjected to three gas flows. An initial gas flow of a relatively low relative humidity is passed over the film solution (6) to evaporate solvent from the polymer/solvent solution (6) to reduce the surface temperature of the film solution (6) below the dew point temperature of the next gas flow, namely, an intermediate gas flow. The intermediate gas flow of relatively high relative humidity forms droplets on the surface of the film solution (6) which grow into the film solution to form the cavities (2) therein. A final gas flow evaporates droplets from the formed cavities (6) as well as further solvent from the film solution (6), but maintains the level of solvent in the film solution (6) at a level, when the droplets have been evaporated to the extent that they no longer influence the formation of the cavities (2), so that the glass transition temperature of the polymer/film solution adjacent the cavities (2) is below the temperature of the film solution (6) in order to permit local polymer flow adjacent the cavities (2) to determine the final shape of the cavities (2).
A phase controllable field effect transistor device is described. The device provides first and second scattering sites disposed at either side of a conducting channel region, the conducting region being gated such that on application of an appropriate signal to the gate, energies of the electrons in the channel region defined between the scattering centres may be modulated.
A method for producing elongated cylindrical micro-pores (2) in a polymer film (1) comprises drop-casting a thin film (22) of a low polymer concentration solvent solution comprising approximately 3.5% by mass polymer and 96.5% by mass solvent on a planar horizontal upwardly facing surface (20) of a substrate (18) in an elongated chamber (17). A first gas flow of nitrogen gas of relative humidity of 2% to 5% is passed through the chamber (17) over a gas/film interface surface (55) of the film solution (22) for approximately 45 seconds to initially accelerate solvent evaporation from the film solution (22) in order to establish a polymer concentration gradient which extends into the film solution (22) from the gas/film interface surface (55) with the polymer concentration highest at the gas/film interface surface (55). A second gas flow of nitrogen gas of relative humidity of approximately 85% is then passed over the gas/film interface surface (55) until all the solvent has been evaporated. Water condensing on the gas/film interface surface (55) from the second humid gas flow forms water droplets, which grow and sink into the film solution (22). The second gas flow controls the downward rate of growth of the polymer concentration gradient into the film solution (22) so that it is matched with the downward rate of growth of the water droplets. This stabilises the water droplets, thereby resulting in the formation of the cylindrical pores (2).
An optical delay device (1) comprises a photonic molecule (3) comprising a pair of identical optically coupled microspheres (8a, 8b) of light conducting material, the centres of which are located on a common axis of symmetry (10), and the outer surfaces (11) of which touch at (12) on the common axis of symmetry (10). An input fibre optic cable (14) directs an optical signal at the microsphere (8a) along an input optical path (18) which is disposed at an angle ? greater than zero to the common axis of symmetry (10), while the delayed optical signal is detected by an output fibre optic cable (16) along an output optical path (19) from the microsphere (8b) which is disposed at an angle a greater than zero to the common axis of symmetry (10). The input fibre optic cable (14) and the output fibre optic cable (16) are moveable relative to the photonic molecule (3) for facilitating varying of the angle ? an the angle a for in turn varying the delay to which the optical signal is subjected in the photonic molecule (3). Additionally, the microsphere (8a) is moveable along the common axis of symmetry (10) relative to the microsphere (8b) for further facilitating varying of the delay to which the optical signal is subjected in the photonic molecule (3).
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