Fabian Lütolf

Centre Suisse d'Electronique et de Microtechnique | CSEM SA

A compact and lightweight mid-infrared supercontinuum gas spectrometer has been developed and successfully tested in airborne campaigns to simultaneously monitor the methane and water vapor concentration in the exhaust fumes of ships.

Bioelectronic and neuroprosthetic interfaces rely on implanted micro‐electrode arrays to interact with the human body. Printing techniques, such as inkjet and screen printing, are attractive methods for the manufacturing of micro‐electrode arrays because they allow flexible, room‐temperature, scalable, and cost‐effective fabrication processes. In t...

We present the realization of the broadband, UAV compatible, atmospheric gas spectrometer developed in the frame of the H2020 FLAIR project, and the preliminary calibration results obtained in the laboratory before field testing.

Non-contact printing methods such as inkjet, electro hydrodynamic, and aerosol printing have attracted attention for their precise deposition of functional materials that are needed in printed electronics, optoelectronics, photonics, biotechnology, and microfluidics. In this article, we demonstrate printing of tapered optical waveguides with losses...

This study introduces a versatile method for modifying the optical properties of plasmonic substrates by inkjet printing of commercially available, transparent inks with various refractive indices. The large-scale and cost-efficient process is demonstrated on tilted aluminum nanolamellas. They show vivid and bright colors based on a Fano resonance,...

This study presents a strain sensor based on plasmonic Fano resonances. The investigated system consists of U-shaped aluminum nanowires that are fabricated at wafer scale with hot embossing and oblique metal evaporation. The proposed process is compatible with roll-to-roll manufacturing. The observed Fano resonance is very sensitive to the spacing...

In the past 30 years, subwavelength gratings have been developed and produced as highly secured Diffractive Optical Variable Image Devices (DOVIDs). They allowed new distinct optical effects and dramatically lowered DOVIDs counterfeiting. In particular, subwalength gratings coated with a high refractive index dielectric are well-known and mass-prod...

An up-scalable approach for creating Fano-resonant nanostructures on large surfaces at visible wavelengths is demonstrated. The use of processes suitable for high throughput fabrication and the choice of aluminum as a cost-efficient plasmonic material ensure that the presented insights are valuable even in consideration of typical industrial constr...

Metallic nanostructures interact strongly with light through surface plasmon modes and many application fields have been proposed during the past decade, including light harvesting, sensing and structural colors. However, their implementation for the industry requires the development of up scalable and cost effective manufacturing processes. The fa...

Since most of the academic photonic and plasmonic nanostructures are based on slow and expensive electron beam lithography processes, there is a need for innovative alternatives suitable for industrial manufacturing. Large areas need to be patterned with a high throughput, which is for example achieved with roll-to-roll machines. Up-scalable design...