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Abdeljalil Sayah

Related publications (25)

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The sol-gel process for realisation of optical micro-structures in glass

Martinus Gijs, Abdeljalil Sayah, Virendra Kumar Parashar

We have applied the sol-gel process to generate optical microstructures in glass using in-house developed sol-gel materials. The synthesis of our sol-gel glass materials is based on the formation of particles of controlled size from organo-metallic compoun ...

2004

Micro-replication of Optical Lenses in Glass using Sol Gel Technology

Martinus Gijs, Abdeljalil Sayah, Virendra Kumar Parashar

A new method to realize arrays of micro-lenses using a sol gel glass replication technology is presented. Polydimethyl-siloxane (PDMS) master structures are used for the replication of thin glass membranes, which, by an appropriate annealing procedure, res ...

2002

Modular microsystem for epithelial cell culture and electrical characterisation

Martinus Gijs, Abdeljalil Sayah, Serge Hediger

We have realised a microsystem for the culture and electrical characterisation of epithelial cell layers for cell-based diagnostic applications. The main goal of this work is to achieve both cell culture and impedimetric and potentiometric characterisation ...

2001

Utilisation of the sol-gel technique for the development of novel stationary phases for capillary electrochromatography on a chip

Martinus Gijs, Abdeljalil Sayah, Dominique Solignac

Capillary electrochromatography (CEC) appears ideally suited for high performance separations at small scale, i.e. on a chip. Problems with the reproducible production of the required HPLC column, but also the lack of commercially available CEC instruments ...

2001

We present oblique powder blasting as a three-dimensional micromachining technology for brittle materials. Powder blasting is a microfabrication process, based on the use of a pressurised air beam containing eroding Al2O3 particles. By varying the angle of ...

2001

Powder blasting for the realisation of microchips for bio-analytic applications

Martinus Gijs, Abdeljalil Sayah, Dominique Solignac

We introduce powder blasting for the fabrication of glass microchips. Powder blasting is a fast and cheap technique with which we pattern channels in sodalime and pyrex glass with a width down to 100µm. We combine the technique with appropriate bonding pro ...

2001

Biosystem for the culture and characterisation of epithelial cell tissues

Martinus Gijs, Abdeljalil Sayah, Serge Hediger

We have designed and realised a new type of microsystem for the electrical characterisation of epithelial cell layers for biomedical diagnostic purposes. We have used deep plasma and other micromachining procedures for the fabrication of vias and microflui ...

2000

We introduce powder blasting using a pressurised nozzle and a metallic mask as a new promising technology for microsystem fabrication. We study basic parameters of this powder blasting erosion process as well as mask-geometry effects on the erosion rate. W ...

2000

Powder blasting for three-dimensional microstructuring of glass

Martinus Gijs, Abdeljalil Sayah

We report on powder blasting as a promising technology for the three-dimensional structuring of brittle materials. We investigate the basic parameters of this process, which is based on the erosion of a masked substrate by a high-velocity eroding powder be ...

2000

We present powder blasting as a new technology for the realization of Micro Electro-Mechanical Systems (MEMS). The technique is base don the erosion of a masked substrate by a high velocity powder beam. We study the erosion rate of the process using glass ...

2000