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PhD scholarship in Live TEM imaging of Nanowire growth and device dynamics

Contratación de Profesores de universidades y de la enseñanza superior en HOVEDSTADEN (Dinamarca)

Clasificación del trabajo: Profesionales científicos e intelectuales : Profesionales de la enseñanza : Profesores de universidades y de la enseñanza superior : Profesores de universidades y de la enseñanza superior.

Arbejde, der forudsætter viden på højeste niveau inden for pågældende område : Undervisning og pædagogisk arbejde : Undervisning og forskning ved universiteter og højere læreranstalter : Undervisning og forskning på universiteter og højere læreranstalter

Descripción de la oferta de trabajo:

Explore live atomic scale imaging of the complex processes in III-V nanowire growth and device dynamics! Nanowires are finding uses in optoelectronics and photovoltaics, and they are key materials in novel technologies such as quantum computing.

The underlying growth processes to create the structures from silicon or III-V materials is a complex interplay of many nanoscale processes.

This project builds on our previous experience with silicon nanowire growth on microcantilevers inside a transmission electron microscope (TEM) to directly view and explore the growth processes as they take place.

Now we will be using the recently installed and unique in situ TEM system combining Metalorganic Vapour Phase Epitaxy (MOVPE) of III-V materials with high-resolution TEM imaging in real time at Lund University.

Aiming to create a better foundation for nanowire III-V optoelectronic devices, this PhD project will combine world-leading competences at Lund University, DTU Fotonik and DTU Nanotech in a push for unprecedented characterization, control and understanding of the complex III-V MOVPE growth processes.

You will develop, fabricate, and use microfabricated heater systems at DTU to study the processes of III-V nanowire growth with MOVPE-TEM, thereby creating nanowire devices while imaging the process in the TEM.

Afterwards, you will do further optical and electrical characterization of the created devices at DTU.

For further inspiration, please refer to the following publications:

  • 'Controlling nanowire growth through electric field-induced deformation of the catalyst droplet', Nature Communications 2016, http://dx.doi.org/10.1038/ncomms12271
  • 'Creating New VLS Silicon Nanowire Contact Geometries by Controlling Catalyst Migration', Nano Letters 2015, http://dx.doi.org/10.1021/acs.nanolett.5b02178
  • 'Real-time in-situ Investigation of III-V Nanowire Growth using Custom-designed Hybrid Chemical Vapor Deposition-TEM', Microsc.

    Microanal.

    23 (Suppl 1), 2017, http://dx.doi.org/10.1017/S1431927617009242

Responsibilities and tasks Your research will include a combination of several skills and tasks:
  • Design, fabrication and test of microcantilever heater systems in the DTU Danchip cleanroom
  • In-situ TEM with MOVPE nanowire growth at Lund University in collaboration with the group of Kimberly Thelander
  • Nanowire characterization with optical and electrical methods at DTU and Lund
  • Modelling and analysis to understand the obtained results and how they can be used to develop new III-V device functionality
Ideally, you already have experience with some of the skills listed above. Your PhD project will:
  • Cover several skills within fabrication, growth, TEM and characterization.

    The project will push beyond state-of-art techniques for in-situ TEM measurement capabilities, and as such, it will require a dedicated and curious analytical mindset.

  • Be situated within a collaboration bteween two universities, including frequent visits to work at Lund University.

    You will have an office space at both universities, and you must be open to travelling and working with international colleagues.

  • Probe complex processes, where developing new understanding will build on your overview and ability to quickly build your competences in new topics and combine input from multiple collaborators.
Given the collaborative nature of the project, you must have good oral and written communication skills in English, the capability to work independently and the ability to design experimental investigations. Qualifications Candidates should have a master's degree in engineering or a similar or equivalent academic degree. Approval and Enrolment The scholarship for the PhD degree is subject to academic approval, and the candidates will be enrolled in one of the general degree pr

Servicio de empleo de origen: AMS, Servicios Públicos de Empleo, Dinamarca.

País del trabajo: Dinamarca.

Región: Hovedstaden.

Ver 680 ofertas de trabajo en "HOVEDSTADEN" (Dinamarca).

Fecha de inicio: 02/06/2018.

Nº de vacantes: 1.

Nivel educativo requerido: Sin especificar.

Cómo solicitar el puesto: Kristian Mølhave

Empresa: Danmarks Tekniske Universitet.

Contacto: Henrik Engstrøm

Ver las 442 ofertas de trabajo de Profesionales científicos e intelectuales : Profesionales de la enseñanza : Profesores de universidades y de la enseñanza superior : Profesores de universidades y de la enseñanza superior ofertadas.

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