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Nico de Rooij

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Publications associées (86)

A miniature frequency-stabilized VCSEL system emitting at 795nm based on LTCC modules

Thomas Maeder, Nico de Rooij, Yves Pétremand, Fabrizio Vecchio

We present a compact frequency-stabilized laser system locked to the Rubidium absorption line of a micro-fabricated reference cell. A printed circuit board (PCB) is used to carry all the components and part of the electronics, and low-temperature co-fired ...

Elsevier2013

A portable lab-on-a-chip instrument based on MCE with dual topbottom capacitive coupled contactless conductivity detector in replaceable cell cartridge

Nico de Rooij

A new design for a compact portable lab-on-a-chip instrument based on MCE and dual capacitively coupled contactless conductivity detection (dC4D) is described. The instrument is battery powered with total dimension of 14 x 25 x 8 cm3 (w x l x h), and weigh ...

Wiley-Blackwell2013

Piezoresistive Membrane-Type Surface Stress Sensor Arranged In Arrays For Cancer Diagnosis Through Breath Analysis

Nico de Rooij, Peter Vettiger, Frédéric Loizeau, Terunobu Akiyama, Sebastian Gautsch, Christoph Gerber

We present the fabrication, characterization and successful medical application of a membrane-type surface stress sensor (MSS), arranged in arrays for molecular detection in gaseous phase. Made out of SOI substrate, a round membrane with a diameter of 5 0 ...

IEEE2013

The two-dimensional array of 2048 tilting micromirrors for astronomical spectroscopy

Nico de Rooij, Michael David Canonica, Wilfried Noell

In multi-object spectrometers, field selectors, which are located in the focal plane of the telescopes, are required for the selection of astronomical objects, such as stars or faint galaxies. We present a two-dimensional micromirror array as a field selec ...

Institute of Physics2013

Double-Side-Coated Nanomechanical Membrane-Type Surface Stress Sensor (MSS) for One-Chip-One-Channel Setup

Nico de Rooij, Peter Vettiger, Frédéric Loizeau, Terunobu Akiyama, Sebastian Gautsch

With their capability for real-time and label-free detection of targets ranging from gases to biological molecules, nanomechanical sensors are expected to contribute to various fields, such as medicine, security, and environmental science. For practical ap ...

American Chemical Society2013

Batch fabrication of gold-gold nanogaps by E-beam lithography and electrochemical deposition

Nico de Rooij, Terunobu Akiyama, Sebastian Gautsch, Yexian Wu

We report on the successful development of a well-controlled two-step batch nano-fabrication process to achieve nanometer-size gaps at the wafer scale. The technique is based on an optimized electron-beam lithography process, which enables the fabrication ...

Institute of Physics2013

High-temperature compatible 3D-integration processes for a vacuum-sealed CNT-based NEMS

Nico de Rooij, Danick Briand, Terunobu Akiyama, Rokhaya Gueye

A System-in-Package (SiP) concept for the 3D-integration of a Single Wall Carbon Nanotube (SWCNT) resonator with its CMOS driving electronics is presented. The key element of this advanced SiP is the monolithic 3D-integration of the MEMS with the CMOS elec ...

SPIE - International Society of Optical Engineering2013

In-Plane Fabricated Insulated Gold-Tip Probe For Electrochemical And Molecular Experiments

Nico de Rooij, Terunobu Akiyama, Sebastian Gautsch, Peter Van der Wal, Yexian Wu

In this contribution we present a scanning probe with a gold-tip completely encapsulated with insulator all the way to the apex. The probe fabrication is unique owing to an in-plane arrangement in which the width of the cantilever is defined by deep reacti ...

IEEE2013

Flexible and Robust Multilayer Micro-Vibrational Harvesters for High Acceleration Environments

Nico de Rooij, Robert Andrew Lockhart, Danick Briand, Pattanaphong Janphuang, Andres Felipe Vasquez Quintero

This paper presents the fabrication and characterization of multilayer PVDF resonant micro-vibrational energy harvesters designed to withstand environments in which high levels of acceleration are present. The multilayer cantilevers are fabricated by combi ...

Iop Publishing Ltd2013

Multiphysics finite element model of a frequency-amplifying piezoelectric energy harvester with impact coupling for low-frequency vibrations

Nico de Rooij, Robert Andrew Lockhart, Danick Briand, Pattanaphong Janphuang, Andres Felipe Vasquez Quintero

This paper presents experimentally-verified multiphysics finite element model of a wideband vibration energy harvester with impact coupling, which operates on the principle of frequency up-conversion: under low-frequency harmonic base excitation a cantilev ...

Iop Publishing Ltd2013

Decreasing the size of printed comb electrodes by the introduction of a dielectric interlayer for capacitive gas sensors on polymeric foil: Modeling and fabrication

Nico de Rooij, Francisco Molina Lopez, Danick Briand

In this work we present a novel strategy to fabricate printed comb electrodes devices with decreased size by the introduction of a thin dielectric layer between the two combs. The electrical insulation of the two polarities prevents short-cuts occurring be ...

Elsevier2013

Theoretical and experimental study of the bending influence on the capacitance of interdigitated micro-electrodes patterned on flexible substrates

Nico de Rooij, Francisco Molina Lopez, Danick Briand

Interdigitated electrodes are common structures in the fields of microelectronics and MEMS. Recent developments in flexible electronics compel an understanding of such structures under bending constraints. In this work, the behavior of interdigitated micro ...

American Institute of Physics2013

A robust platform for textile integrated gas sensors

Nico de Rooij, Jérôme Courbat, Francisco Molina Lopez, Danick Briand, Caglar Ataman, Andres Felipe Vasquez Quintero, Giorgio Mattana

Fabrication, textile integration and post-weaving characterization of a robust platform for monolithically integrated, low-power gas and temperature sensing are presented. The platform, consisting of an interdigitated planar capacitor for gas sensing and a ...

Elsevier2013

Low-temperature thin-film indium bonding for reliable wafer-level hermetic MEMS packaging

Nico de Rooij, Yves Pétremand, Danick Briand

This paper reports on low-temperature and hermetic thin-film indium bonding for wafer-level encapsulation and packaging of delicate and temperature sensitive devices. This indium-bonding technology enables bonding of surface materials commonly used in MEMS ...

Institute of Physics2013

On the experimental determination of the efficiency of piezoelectric impact-type energy harvesters using a rotational flywheel

Simon Nessim Henein, Nico de Rooij, Robert Andrew Lockhart, Danick Briand, Pattanaphong Janphuang

This paper demonstrates a novel methodology using a rotational flywheel to determine the energy conversion efficiency of the impact based piezoelectric energy harvesters. The influence of the impact speed and additional proof mass on the efficiency is pres ...

Iop Publishing Ltd2013

A dual-axis pointing mirror with moving-magnet actuation

Nico de Rooij, Wilfried Noell, Caglar Ataman, Sébastien Lani

A large-aperture and large-angle MEMS-based 2D pointing mirror is presented. The device is electromagnetically actuated by a moving-magnet/stationary-coil pair and potentially suited for high power laser beam shaping and beam pointing applications, such as ...

Institute of Physics2013

Fully Inkjet-Printed Parallel-Plate Capacitive Gas Sensors on Flexible Substrate

Nico de Rooij, Francisco Molina Lopez, Danick Briand

Small fully inkjet-printed gas sensors based on capacitive parallel-plate (PP) structures have been realized on flexible plastic foil and characterized. A gas sensing layer was inkjet-printed between inkjet-printed bottom and top silver electrodes. Compare ...

Ieee2012

Droplet-based Liquid-Liquid Extraction and On-Chip IR-Waveguide-Spectroscopy Detection of Cocaine in Human Saliva

Nico de Rooij, Hans Peter Herzig, Yu-Chi Chang, Peter Van der Wal, Philip Wägli, Lubos Hvozdara

We present a portable microsystem to quantitatively detect cocaine in human saliva. The chip combines a simple microfluidic method for multiphase liquid-liquid extraction to transfer cocaine from IR-light absorbing saliva to an IRtransparent solvent with t ...

2012

Microfabricated All-Around-Electrode Ac Electroosmotic Pump With Simple Design And Increased Velocity Generation

Nico de Rooij, Luca Ribetto

AC electroosmosis is a convenient valveless method to pump liquids, whilst avoiding electrolysis and gas generation. Basic designs presented in the literature often have limited velocity or pressure capabilities. This paper reports a simple approach to the ...

IEEE2012

Study of laser-pumped double-resonance clock signals using a microfabricated cell

Nico de Rooij, Yves Pétremand

We present our microwave spectroscopic studies on laser-microwave double-resonance (DR) signals obtained from a micro-fabricated Rb vapor cell. This study focuses on the characteristics and systematic shifts of the ground-state 'clock transition' in Rb-87 ...

2012

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