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Wicaksono, D.H.B. (author), Vincent, J.F.V. (author), Pandraud, G. (author), Craciun, G. (author), French, P.J. (author)
journal article 2005
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Pandraud, G. (author), Pham, H.T.M. (author), Pakula, L.S. (author), Sarro, P.M. (author), French, P.J. (author)
Planar silicon carbide (SiC) waveguides are proposed for fabrication on a silicon substrate with a oxide isolation layer. Using post deposition annealing it is possible to achieve low Polarization-Dependent Loss (PDL) within optical SiC waveguides fabricated using a low temperature deposition technique. Those waveguides have been successfully...
conference paper 2005
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Wicaksono, D.H.B. (author), Pandraud, G. (author), French, P.J. (author)
This paper presents an on-going work to develop micromachined silicon-based strain sensor inspired from the campaniform sensillum of insects. We present simple optical setup for the characterisation of a membrane-in-recess structure as an early stage in mimicking the natural sensor. The microstructure is a 500 nm-thick SiO2/SiN circular membrane...
conference paper 2005
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Wicaksono, D.H.B. (author), Zhang, L.J. (author), Pandraud, G. (author), French, P.J. (author), Vincent, J.F.V. (author)
journal article 2006
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Lau, G.K. (author), Goosen, J.F.L. (author), Van Keulen, F. (author), French, P.J. (author), Sarro, P.M. (author)
journal article 2006
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Pakula, L. (author), French, P. (author)
conference paper 2007
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Jiang, L. (author), Pandraud, G. (author), French, P.J. (author), Spearing, S.M. (author), Kraft, M. (author)
journal article 2007
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French, P.J. (author), Jeekel, J. (author), Lange, J.F. (author)
Tissue vitality is monitored by means of a sensor attached to the tissue. Preferably, the sensor is attached to the tissue at the end of a surgical intervention, for example after anastomosis of the colon. The sensor is attached to the tissue with a sensitive surface facing the tissue, e.g. at a point of anastomosis. The sensor is designed to...
patent 2007
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Margallo Balbas, E. (author), Wieringa, P.A. (author), French, P.J. (author), Lee, R.A. (author), Breedveld, P. (author)
Surgical drill system comprising a mechanical drill bit and means for imaging the vicinity of the drill bit tip, said means comprising: at least one optical fiber having a distal end and a proximal end, said distal end being located adjacent said drill bit tip, an optical processing unit, said proximal end of said at least one optical fiber...
patent 2007
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Margallo-Balbas, E. (author), Pandraud, G. (author), French, P.J. (author)
Optical Coherence Tomography (OCT) is a powerful medical imaging technology. Its ability to non-invasively probe tissues in depth with high resolution has lead to applications in many fields of medicine, with a large potential for surgical guidance. One of the technological challenges impairing faster adoption of OCT is the relative complexity...
conference paper 2007
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Margallo-Balbás, E. (author), French, P.J. (author)
A Monte Carlo code for the calculation of light transport in heterogeneous scattering media is presented together with its validation. Triangle meshes are used to define the interfaces between different materials, in contrast with techniques based on individual volume elements. This approach allows to address realistic problems in a flexible way...
journal article 2007
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Rajaraman, V. (author), Makinwa, K.A.A. (author), French, P.J. (author)
We present a simple, flexible and low cost MEMS fabrication process, developed using deep reactive ion etching (DRIE) and wafer bonding technologies, for manufacturing in-plane high aspect ratio (HAR) inertial sensors. Among examples, the design and fabrication results of a two axis inertial device are presented. Fabricated device thickness...
conference paper 2008
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Pakula, L.S. (author), Rajaraman, V. (author), French, P.J. (author)
The operation principle, design, fabrication and measurement results of a quasi digital accelerometer fabricated on a thin silicon-on-insulator (SOI) substrate is presented. The accelerometer features quasi-digital output, therefore eliminating the need for analogue signal conditioning. The accelerometer can be directly interfaced to digital...
conference paper 2009
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Rajaraman, V. (author), Pakula, L.S. (author), Pham, H.T.M. (author), Sarro, P.M. (author), French, P.J. (author)
This paper presents a new low-cost, CMOS-compatible and robust wafer-level encapsulation technique developed using a stress-optimised PECVD SiC as the capping and sealing material, imparting harsh environment capability. This technique has been applied for the fabrication and encapsulation of a wide variety of surface- and thin-SOI...
conference paper 2009
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Wicaksono, D.H.B. (author), French, P.J. (author), Maeda, C. (author), Kagawa, K. (author), Onome, H. (author), Kakiuchi, E. (author)
The invention relates to a infrared sensor (1) comprising a Golay cell (2) in the form of a chamber that houses a heatable gas, which chamber is delimited by a movable diaphragm (3), wherein there are conversion means (4) for converting a movement of the diaphragm into a variation of a measurable electrical parameter, wherein the diaphragm...
patent 2009
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Jardinier, E. (author), Pandraud, G. (author), Pham, M.H. (author), French, P.J. (author), Sarro, P.M. (author)
A photonic crystal waveguide biosensor in the visible is presented for biosensing. The sensor is applied to Refractive Index (RI) measurements. The sensitivity at different wavelength is presented for both air holes and air core configurations of photonic crystal waveguide (PCW) made of TiO2. It is shown that by using Atomic Layer Deposition ...
journal article 2009
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French, P.J. (author), Wicaksono, D.H.B. (author)
Nature has been the inspiration in art for centuries. In the 19th Century there were a number of attempts to copy nature and apply the ideas to engineering. Unfortunately, this was often done without understanding the details of operation of the natural systems. In some cases engineering successes were based on natural systems without the...
journal article 2009
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Margallo-Balbás, E. (author), Taroni, P. (author), Pifferi, A. (author), Koolstra, J.H. (author), Van Ruijven, L.J. (author), French, P.J. (author)
In recent years, optical techniques based on diffusion approximation have demonstrated their ability to gain rich spectral information about bone. However, these methods normally assume homogeneity, while cancellous bone and marrow form a highly heterogeneous two-phase medium. This paper studies the limitations of this assumption, and quantifies...
journal article 2010
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Margallo-Balbás, E. (author), Taroni, D. (author), Pifferi, A. (author), Koolstra, J.H. (author), Van Ruyven, L.J. (author), French, P.J. (author)
In recent years, optical techniques based on diffusion approximation have demonstrated their ability to gain rich spectral information about bone. However, these methods normally assume homogeneity, while cancellous bone and marrow form a highly heterogeneous two-phase medium. This paper studies the limitations of this assumption, and quantifies...
journal article 2010
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Margallo-Balbás, E. (author), Geljon, M. (author), Pandraud, G. (author), French, P.J. (author)
The scanning delay line is a key component of time-domain optical coherence tomography systems. It has evolved since its inception toward higher scan rates and simpler implementation. However, existing approaches still suffer from drawbacks in terms of size, cost, and complexity, and they are not suitable for implementation using integrated...
journal article 2010
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