Defence of doctoral thesis in the field of Micro- and Nanotechnology, M.Sc. Maria Kim

The title of the thesis is Flexible platform for next-generation electronics

M.Sc. Maria Kim will defend the thesis "Flexible platform for next-generation electronics" on 11 May 2021 at 12 in Aalto University School of Electrical Engineering, Department of Electronics and Nanoengineering.

Prof. Peter Boggild, DTU, Denmark
Prof. Henri Happy, Lille University, France

Supervisor: Prof. Harri Lipsanen, Aalto University School of Electrical Engineering, Department of Electronics and Nanoengineering

The public defense will be organized via remote technology. Follow defence:

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Thesis available for public display at:

Sähkötekniikan korkeakoulun väitöskirjat:

Press release:

Two-dimensional (2D) materials and novel nanostructures open up enormous opportunities for research and industry. The advantages of nanosized materials and structures over bulk are obviously in their small dimensions, but also in physical phenomena predicted to exceed limits of current semiconductor materials. Among them are high carrier mobility at room temperature, intrinsic high transmittance and flexibility, possibility to have a smaller device size and larger surface-to-volume ratio. The properties of these materials and structures hold promise for next-generation electronics and optoelectronics.

Graphene has been heralded as a game changer in materials research, because thermodynamical stability of strictly 2D crystalline materials was uncertain before. Graphene being an isolated single atomic layer of carbon crystal exfoliated from natural graphite has been used for proof-of-concept demonstrations with 2D materials. The first field effect transistor composed of graphene revealed remarkable charge carrier mobility. Furthermore, graphene shows high optical transmittance and yields very robust structure, rendering it an excellent material for flexible and transparent applications. Unlike graphene, which exists in nature, nanowires are nanostructures synthesized from various materials, including metals, dielectrics and the most typical semiconductors. Among demonstrated nanowire applications are light emitting diodes, solar cells, and lasers.

The adaptation of novel materials and nanostructures to planar microfabrication processes with capability to utilize all their outstanding properties requires efficient processing schemes. This thesis focuses on fabrication methods suitable for transferring laboratory research in nanomaterials and nanostructures, such as graphene and nanowires to industrial production. Particularly, bio-compatible parylene C is considered as a multifunctional platform for combined use as substrate, dielectric and encapsulation layer, which provides potential scalability for devices based on novel materials. Finally, reaching a good material combination could be the key for lowering the device cost and the most importantly to sustainable manufacturing processes.

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