Modelling lateral web dynamics for R2R equipment design

A model describing the lateral dynamic behaviour of a web between and on rollers is implemented to aid in the design of roll to roll equipment. The model is validated on an industrial setup, and disturbances acting on the web were estimated. The model equations were used to visualise the interdependence between the span length and the...

Roll-to-roll fabricated organic devices

Equipment for atmospheric, spatial atomic layer deposition in roll-to-roll processes

A novel type of reactor has been designed for atmospheric atomic layer deposition (ALD) on flexible substrates. In the reactor, a flexible substrate slowly advances around a fast rotating drum. Gas bearing technology is used to prevent physical contact between the flexible substrate and the drum, and to separate reactants to enable a spatial ALD...

Fabrication of strongly curved aspheric silicon carbide mirrors

TNO Science and Industry has designed and is currently developing the Basic Angle Monitoring Opto-Mechanical Assembly (BAM OMA) [1], which is part of the GAIA spacecraft. In GAIA two telescopes mounted on a slowly spinning satellite will measure the position of the stars with an accuracy much higher as ever done before. Crucial in the system is...

Low-frequency vibration isolation in six degrees of freedom: The Hummingbird

TNO Science and Industry and MECAL have developed a six degree of freedom vibration isolation system that suppresses both floor vibrations and direct forces on a table top. The achieved reduction of transmissibility and compliance is 40 dB between 1 and 50 Hz in vertical direction, and 30 dB between 1 and 20 Hz in horizontal direction. Key...

Real-time compensation of dynamic thermally induced optical aberrations by a deformable mirror based on reluctance actuators

The resolving power of an optical system is often limited by the presence of timevarying wavefront distortions caused by heat flows. The aberrations do not only include tip/tilt and focus terms, but also higher spatial frequencies, due to the heat flow’s turbulent nature. TNO has built an adaptive optics (AO) breadboard, to demonstrate the...