Eurizon.eu

Organization: VU University Amsterdam

Location: Amsterdam, Netherlands

Field: Technology

Requirements:

University Graduate in Technolog;
ENGLISH: good

Abstract:

Project description: Nanoscale photovoltaics and photochemistry on biosolar cells. Keywords: bionanotechnology, solar cells, photosynthesis, light-spectroscopy, current generation, microscopy, surface modification

Description:

In nature, solar energy is converted by means of the process of photosynthesis into useful energy. The photosynthetic machinery consists of proteins and complexes of proteins that can capture transfer and transform solar energy with great efficiency. Our research focuses on the supramolecular functioning of the natural process and the utilization of the proteins or artificial molecules that mimic photosynthesis within bio-metal hybrid solar cells. Such cells may operate in a two way design, where photons are used firstly to extract electrons and split water into oxygen and protons while photons of different wavelengths drive proton pumps and hydrogen producing catalysts. In all constructs, the light absorbing molecules or complexes are adhered onto conducting surfaces for electron relay. In contrast to synthetic light activated molecules, the natural protein complexes can interact in a non-covalent, but specific way, based on weak interactions. The natural systems therefore allow a bottom-up approach to create self-assembling photocatalysts for energy transducing. On the other hand, specific interactions may be induced by genetic engineering to create 3D stacking of complexes or the membrane systems in which the proteins reside as well as nanoscale patterns.
 
Because of the wealth of knowledge acquired in the past on individual complexes, photosynthetic assemblies are particular amenable for a bionanotechnological approach. Moreover, these biopolymers have embedded chromophores, or pigments that can be precisely probed to drive specific reactions or that can function as fluorescent markers reporting on their mutual organization and functionality. In this project, we will investigate surface adhered photosynthetic protein-complexes, membranes and other assemblies for solar energy utilization. At the same time, we will gain knowledge on how the natural assemblies function and how we can influence molecular properties by external electric fields. Properties will be assessed by means of light-induced current generation, single-molecule fluorescence spectroscopy and atomic force microscopy. Surfaces can be constructed with altered electrostatic interactions or external voltages can be applied. A range of different photosynthetic assemblies will be probed, including those from plants and algae that contain the unique watersplitting catalyst, key for producing solar driven hydrogen. Modified individual complexes will be probed for 3D stacking and nanometric patterning of proteins. We will translate the entire photosynthetic process onto a bio-metal hybrid design. All together, this project will seek out the different routes to take for a nanotechnological approach to biosolar energy utilization. We are looking for a candidate with a MSc. degree in physics, chemistry, molecular biology or related fields, enthusiastic to work in the field of bio-nanotechnology. Experience with any of the aforementioned keywords is desirable, but not required. The candidate has a good ability to write and read English.
 
The initial appointment will be for a period of  1 year. After satisfactory evaluation of the initial appointment, it can be extended for a total duration of  4 years. You can find information about our excellent fringe benefits of employment at http://www.workingatvu.nl like remuneration of 8,3% end-of-year bonus and 8% holiday allowance; a minimum of 29 holidays In case of full-time employment; generous contribution (70%) commuting allowance based on public transport; discounts on collective insurances (healthcare- and car insurance).  The salary will be in accordance with university regulations for academic personnel, and amounts € 2.042,- gross per month in the first year up to € 2.612,- in the fourth year (salary scale 85) based on a full-time employment.

Deadline: 15-06-2011

Contacts:

Link: http://www.vu.nl/

Email: few-vacatures@few.vu.nl

If you apply for this position please say you saw it on eurizons.eu