Zobrazeno 1 - 10
of 149
pro vyhledávání: ''
Autor:
Bland, Stewart Rodney
This thesis focusses on the phenomena of charge ordering and orbital ordering in transition metal oxides, using the technique of resonant x-ray diffraction (RXD). The technique is suited to such studies, as it provides an elemental and band specific
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.519110
Autor:
Griffin, Paul F.
This thesis reports on the design and construction of, and results from, an optical-dipole trapping apparatus developed to confine ultracold rubidium atoms in a conservative, large period, optical-dipole trap. An ultra-high vacuum system was designed
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.418715
Autor:
Arabshahi, Hadi
This thesis deals with the development and application of Monte Carlo simulations to study electron transport in bulk GaN in the wurtzite crystal structure and the properties of field effect transistors made from the material. There is a particular e
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.369921
Autor:
Portieri, Alessia
This work has been a study of systems, mostly of sulfa-drugs, showing polymorphic behaviour. Using different means as solid state NMR, X-ray analysis, and theoretical calculations, we have seen how it is possible to understand results obtained from t
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.391668
Autor:
Leigh, Nigel Royston
A probe for measuring the specific heat of superconductors at low temperatures and in high magnetic fields has been built and commissioned. The probe has been tested using the relaxation method on samples of copper and the accuracy of the data is 1.3
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.369923
Autor:
Hackman, Nancy-Ann
The work presented in this thesis describes an investigation into the properties and behaviour of a new class of nonlinear optical organic chromophores. This study contributes to the optimisation of nonlinear optical molecules through an improved und
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342625
Autor:
Keys, Simon Alastair
Detailed, accurate measurements of critical current density and resistivity to determine the upper critical field have been made on a technological NbsAl conductor in magnetic fields up to 15 T, temperatures from 4.2 K up to the critical temperature
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390702
Autor:
Sheridan, A. K.
This thesis presents an investigation into the factors which control the gain and amplification properties in conjugated materials. Conjugated polymers and perylene dyes are highly fluorescent, are easy to process into thin films, and exhibit strong
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341412
Autor:
Sneary, Adrian Bernard
The transport critical current density (J(_c)) of a 37 filament Bi-2223/Ag tape has been measured as a function of field and temperature from 4.2 K up to 90 K. Data have been obtained over a large current range from 10 mA up to 100 A and in fields up
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342744
Autor:
David, Dugdale
Calculations of the electronic properties of AIN, GaN, InN and their alloys are presented. Initial calculations are performed using the first principles pseudopotenial method to obtain accurate lattice constants. Further calculations then investigate
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341415