Outcomes

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Publications view all
our research
Microelectronic Engineering 193, p. 18–22 (2018)
Sub-10 nm Electron and Helium Ion Beam Lithography Using a Recently Developed Alumina Resist
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Electron Beam Lithography (EBL) at sub-10 nm resolution is mainly limited by resist contrast and proximity effects. In this work, we investigate the use of a recently developed alumina-based resist as a negative-tone resist for EBL at 100 keV and focused helium ion beam lithography (FHIBL). The resist is synthesized using a sol-gel method and turns into a near completely inorganic alumina system when exposed to the electron/ion beam. We first investigate the effect on the resist contrast curve on i) development temperature; ii) stability of the resist after exposure and before post-baking and development; and iii) aging of the resist solution. We demonstrate the patterning of isolated features as small as 6.5 nm using an EBL and 5 nm using FHIBL and a resolution down to 10 nm for FHIB exposed films. Finally, we demonstrate the pattern transfer of 10 nm lines with an aspect ratio of 10 in silicon, using an optimized reactive ion etching process.
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our research
IUCrJ Vol. 5, 4, 390-401 (2018)
Dummy-atom modelling of stacked and helical nanostructures from solution scattering data
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The availability of dummy-atom modelling programs to determine the shape of monodisperse globular particles from small-angle solution scattering data has led to outstanding scientific advances. However, there is no equivalent procedure that allows modelling of stacked, seemingly endless structures, such as helical systems. This work presents a bead-modelling algorithm that reconstructs the structural motif of helical and rod-like systems. The algorithm is based on a `projection scheme': by exploiting the recurrent nature of stacked systems, such as helices, the full structure is reduced to a single building-block motif. This building block is fitted by allowing random dummy-atom movements without an underlying grid. The proposed method is verified using a variety of analytical models, and examples are presented of successful shape reconstruction from experimental data sets. To make the algorithm available to the scientific community, it is implemented in a graphical computer program that encourages user interaction during the fitting process and also includes an option for shape reconstruction of globular particles.
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from our users
New J. Chem.42, 9635-9644 (2018)
Encapsulation of cationic iridium(III) tetrazole complexes into a silica matrix: synthesis, characterization and optical properties
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Herein we report the easy incorporation of brightly phosphorescent cationic iridium(III) tetrazole complexes into a silica based matrix via an easily scalable colloidal process. For this purpose, two cationic Ir(III) emitters bearing 5-aryl tetrazole ligands (R-CN4) were selected: blue [F2IrPTZ-Me]+ (C^N = F2ppy; N^N = PTZ-Me – 2-(2-methyl-2H-tetrazol-5-yl)pyridine) and red [IrQTZ-Me]+ (C^N = ppy; N^N = QTZ-Me – 2-(2-methyl-2H-tetrazol-5-yl)quinoline). The cationic complexes were readily adsorbed to negatively charged silica nanoparticles and trapped in the sol–gel matrix. The sol-to-solid phase transfer was performed by using an innovative spray-freeze-drying technique, leading to the formation of phosphorescent solid micro-granules.
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Deliverables view all
WP11 - NA – Innovation and networking activities
D11.8 - Operational marketing plan towards industry
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Industrial innovation and knowledge transfer by exploiting the NFFA-Europe facilities are common objectives that the Technical and the Industrial Liaison Networks (TLNet/ILNet) set out jointly to achieve through six primary tasks in the 2017-2018 period. Two of these tasks answer back the actual needs of increasing both the industrial participation in the feasibility studies as well as the success rate in the number of granted access. The strategies enacted by NFFA-Europe in reaching out towards industry are described in the Operational Marketing Plan which is divided into two main sections.
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WP11 - NA – Innovation and networking activities
D11.12 - First Report on the incentivised knowledge transfer and feasibility work with industry
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This first report on the incentivised knowledge transfer and feasibility work with industry aims at describing the work carried out by the Technical Liaison Network to raise more awareness on the feasibility studies and on the next steps to upgrade the portal to harvest industrial requests. A survey on feasibility studies in the NFFA-Europe offer has highlighted a temporary under-exploitation of this tool by potential industrial users.
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WP11 - NA – Innovation and networking activities
D11.10 - Educational videos
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NFFA-Europe is a Research and Innovation Action committed to providing free access to state-of-the art tools for multidisciplinary, frontier research at the nanoscale: available techniques range from nano-characterisation to theory and numerical simulation. With the aim to enhance the knowledge in the nanoscale area for the European research community, this deliverable explains the action towards obtaining some educational materials freely available through the web-site. This material is based on the edition of a set of short-duration Educational Videos. The videos are being designed by expert scientists in the field and edited by Promoscience. Fifteen videos have been established to cover most of the NFFA-Europe techniques: 6 videos deal with lithography techniques, 2 videos deal with chemical and physical materials growth, 2 videos deal with theory and simulation techniques and finally 5 videos deal with characterization techniques at the nanoscale.
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Transnational Access Statistics
9 calls for access
301 proposals submitted
64% rate of acceptance
30% with Large Scale Facilities
12% with theory
11% with industry
~3 average users per proposal
40 countries applying
930 lab sessions