characterization | Scholarship for Nigerians and Africans - Part 3

International PhD Studentship in Chemistry, Poland

The International PhD program “Towards Advanced Functional Materials and Novel Devices – Joint UW and WUT International PhD Programme” realized by the Faculties of Chemistry of Warsaw University of Technology (WUT) and University of Warsaw (UW), Poland, designed in cooperation with well-recognized international research Partner institutions.

3 students will be admitted to the first or second year of the International PhD studies.
PhD Projects listed below are still available:

UW-4: “Solution Thermodynamic of Ionic Liquids in Water, Aliphatic Alcohols and Hydrocarbons”
UW-5: “Organic semiconductors for organic electronics: synthesis, characterization and application in test devices”
PW-7: “Advanced polymeric materials – From calculation to application”

Duration of the program is 4 years, including 6-24 months spent abroad in the foreign Partner institutions.

A fellowship of 3000 PLN/month (tax-free) + 500 PLN/month (insurance) is offered, which compares well with the average salary in Poland. An additional allowance of 1500 PLN /month will be provided for the stay at the foreign partner institution.
Tuition fees for all coursework and health insurance are covered by the fellowship. The University will assist in finding accommodation.

Students from all countries are invited to apply.

Scholarship Application Deadline: Contact employer(msd-at-ch.pw.edu.pl)

Further Scholarship Information and Application

PhD Scholarship in Materials Physics, Uppsala University, Sweden

In classical hydrodynamics a non slip boundary condition at the solid – liquid interface is generally assumed for flowing media. With increasing sensitivity of experimental techniques, like e.g. the surface force apparatus (SFA), this assumption was challenged and surface slip was experimentally established in many liquids. However, the microscopic origin of wall slip is not understood and under heavy debate. The project aims to proceed towards an understanding of wall slip on the atomic length scale by combining laboratory techniques with scattering experiments at international facilities. This quest is driven both by a fundamental interest and a large potential for applications.

The successful Ph.D. applicants will explore complex liquids at functionalized surfaces. The work involves sample production using modern coating techniques as well as advanced physical characterization using e.g. AFM, rheology, contact angle as well as x-ray and neutrons scattering.

Scholarship Application Deadline: 31 March 2011

Further Scholarship Information and Application

Doctoral Scholarship in GaN-based Single Photon Emitters, Germany: Quantum Metrology

The interest in single-photon-emitters rises continuously since quantum communication based on the polarization of single photons has already been demonstrated. Unfortunately up to now almost all single-photon sources are pumped optically which makes the realization of a widespread communication network very complex.

For this reason it would be of great advantage to fabricate electrically pumped single-photon-sources. This can be realized e. g. by fabricating LED structures with active regions, where only single ions are incorporated, leading to single photon emission. The LEDs could be driven electrically and the optical energy of the LED is transferred to the single transition available in the active region of the LED. Today, only very few reports on electrical single photon sources are available.

Zinc is a very promising candidate as a single photon emitter in GaN based LEDs. Zn acceptors show efficient emission in the blue spectral range. Zn creates a deep acceptor level 0.3 eV – 0.4 eV above the valence band. Furthermore, Silicon-codoping is required for efficient optical emission, resulting in a very bright photo-luminescence at 2.9 eV (~ 430 nm) which has been assigned to donor-acceptor (DA) transitions.

The goal of this thesis is to investigate single transitions in GaN based LEDs with Zn and Si co-doping. LEDs will be fabricated by MOCVD and processed in house. A thorough analysis of the relevant optical transitions by time resolved optical characterization will allow to get information on the nature and characteristics of the transitions, as well as on the emission statistics in order to get a quantitative handle on the statistical quality of single photon emission correlated with that.

Scholarship Application Deadline: 31 March 2011

Further Scholarship Information and Application