Nico de Rooij

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Study of bending reliability and electrical properties of platinum lines on flexible polyimide substrates

Nico de Rooij, Danick Briand, Jérôme Courbat, Francisco Molina Lopez

We have experimentally studied the variation in electrical resistance of flexible platinum lines patterned on polyimide foil when they are subjected to circular bending constraints. The lines were patterned by means of standard photolithography and sputter ...

Elsevier2014

Printed capacitive sensing device

Nico de Rooij, Danick Briand

Capacitive-based sensing device comprising an organic substrate, a sensing layer and two printed/additively deposited planar electrodes, said sensing layer being separated from the substrate by at least one separating layer. ...

2014

A Wearable System Of Micromachined Piezoelectric Cantilevers Coupled To A Rotational Oscillating Mass For On-Body Energy Harvesting

Nico de Rooij, Danick Briand, Pattanaphong Janphuang, Robert Andrew Lockhart

In this paper, we present a compact, wearable piezoelectric on-body harvesting system that uses a small eccentric mass from a common watch movement to mechanically deflect a set of micromachined piezoelectric cantilevers when excited by the low frequency m ...

IEEE2014

Development of a New Generation of Ammonia Sensors on Printed Polymeric Hotplates

Nico de Rooij, Danick Briand, Francisco Molina Lopez, Andres Felipe Vasquez Quintero, El Hadji Malick Camara

Conducting polyaniline-based chemiresistors on printed polymeric micro-hotplates were developed, showing sensitive and selective detection of ammonia vapor in air. The devices consist of a fully inkjet-printed silver heater and interdigitated electrodes on ...

American Chemical Society2014

Printing And Encapsulation Of Electrical Conductors On Polylactic Acid (Pla) For Sensing Applications

Nico de Rooij, Danick Briand, Andres Felipe Vasquez Quintero, Giorgio Mattana, Nathalie Frolet, Alexis Pierre Henri Marette

This paper presents the printing of resistive and interdigitated (IDE) capacitive devices for temperature and humidity sensing applications, respectively, on biodegradable polylactic acid (PLA) substrates. Inkjet and gravure printing were evaluated to tran ...

IEEE2014

On The Optimization And Performances Of A Compact Piezoelectric Impact Mems Energy Harvester

Nico de Rooij, Danick Briand, Pattanaphong Janphuang, Robert Andrew Lockhart

This paper presents the development of a compact energy harvesting configuration to convert low frequency, mechanical oscillations into usable electrical energy using AFM-like MEMS piezoelectric cantilevers coupled to a rotating gear. In this approach, one ...

IEEE2014

Properties and Printability of Inkjet and Screen-Printed Silver Patterns for RFID Antennas

Nico de Rooij, Danick Briand, Jinyu Jason Ruan, Francisco Molina Lopez

We report the modeling, and geometrical and electrical characterization, of inkjet and screen-printed patterns on different polymeric substrates for use as antennas in radio-frequency identification (RFID) applications. We compared the physical and electri ...

Springer Verlag2014

Large Arrays Of Inkjet-Printed Mems Microbridges On Foil

Nico de Rooij, Danick Briand, Francisco Molina Lopez

This works describes the fabrication process of an array of printed MEMS microbridges on polymeric foil, performed in only four easy steps. Each functional material was deposited exclusively by inkjet-printing technique, compatible with large-area fabricat ...

IEEE2014

Multisite monitoring of choline using biosensor microprobe arrays in combination with CMOS circuitry

Nico de Rooij, Peter Van der Wal, Olivier Frey

A miniature device enabling parallel in vivo detection of the neurotransmitter choline in multiple brain regions of freely behaving rodents is presented. This is achieved by combining a biosensor microprobe array with a custom-developed CMOS chip. Each sil ...

De Gruyter2014

Design considerations to enhance the performances of thin circular piezoelectric energy harvester diaphragms in harsh liquid environments

Nico de Rooij

Thin circular piezoelectric energy harvester diaphragms undergoing large deflection in a harsh liquid environment are investigated in this paper. A material set combining AlN as transducer, SiC as electronics, Mo as wiring and Si as holder is considered. A ...

Iop Publishing Ltd2013

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A Wearable System Of Micromachined Piezoelectric Cantilevers Coupled To A Rotational Oscillating Mass For On-Body Energy Harvesting

Nico de Rooij, Danick Briand, Pattanaphong Janphuang, Robert Andrew Lockhart

IEEE2014

Design considerations to enhance the performances of thin circular piezoelectric energy harvester diaphragms in harsh liquid environments

Nico de Rooij

Iop Publishing Ltd2013