Publications related to Autofocus

A hybrid ultrasonic motor and electrorheological fluid clutch actuator for force-feedback in MRI/fMRI

Hannes Bleuler, Dominique Chapuis, Roger Gassert, Etienne Burdet

This paper presents a safe, electrically powered MR-compatible actuator with a large range of output impedance, which can be used at the entry of the scanner bore. This actuator is composed of an ultrasonic motor (USM) and a torque-controlled electrorheolo ...

2008

A Hybrid Ultrasonic Motor and Electrorheological Fluid Clutch Actuator for Force-Feedback in MRI/fMRI

Hannes Bleuler, Dominique Chapuis, Roger Gassert, Etienne Burdet

This paper presents a safe, electrically powered MR-compatible actuator with a large range of output impedance, which can be used at the entry of the scanner bore. This actuator is composed of an ultrasonic motor (USM) and a torque-controlled electrorheolo ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2008

Inkjet Printing of SU-8; A Case Study for Microlenses

Jürgen Brugger, Edoardo Charbon, Alcherio Martinoli, Vahid Fakhfouri, Dmitri Boiko, Grégory Mermoud, Joo Yeon Kim, Nicolas Cantale

This paper describes a novel method to fabricate polymer MEMS based on the inkjet printing of SU-8, with a special emphasis on integrated micro-optical lens arrays. Inkjet control parameters are optimized in order to enable a stable and reproducible ejecti ...

2008

Inkjet printing of SU-8 for polymer-based MEMS a case study for microlenses

Jürgen Brugger, Edoardo Charbon, Vahid Fakhfouri, Grégory Mermoud, Joo Yeon Kim

This paper describes a novel method to fabricate polymer MEMS based on the inkjet printing of SU-8, with a special emphasis on integrated micro-optical lens arrays. Inkjet control parameters are optimized in order to enable a stable and reproducible ejecti ...

IEEE2008

Improvement of the Contrast in Cancer Detection by Autofluorescence Bronchoscopy using a narrow spectral violet Excitation: A preliminary study

Hubert van den Bergh, Georges Wagnières, Tanja Gabrecht, Blaise Lovisa

Autofluorescence (AF) bronchoscopy is a useful tool for early cancer detection. However, the mechanisms involved in this diagnosis procedure are poorly understood. We present a clinical autofluorescence imaging study to assess the depth of the principal co ...

2007

Blue-violet excited autofluorescence spectroscopy and imaging of normal and cancerous human bronchial tissue after formalin fixation

Georges Wagnières, Tanja Gabrecht

Autofluorescence (AF) imaging is a powerful tool for the detection of (pre-)neoplastic lesions in the bronchi. Several endoscopic imaging systems exploit the spectral and intensity contrast of AF between healthy and (pre-)neoplastic bronchial tissues, yet, ...

Wiley-Blackwell2007

A Haptic Knob with a Hybrid Ultrasonic Motor and Powder Clutch Actuator

Hannes Bleuler, Dominique Chapuis, Etienne Burdet, Xavier Michel

In haptics, the forces to be displayed vary widely in terms of magnitude and bandwidth. A single actuator can hardly comply with these requirements. It has thus been proposed to combine electrical motors and passive devices in a hybrid actuator to cover a ...

2007

Improvement of the contrast in cancer detection by autofluorescence bronchoscopy using a narrow spectral violet excitation: A preliminary study

Hubert van den Bergh, Georges Wagnières, Tanja Gabrecht, Blaise Lovisa

Autofluorescence (AF) bronchoscopy is a useful tool for early cancer detection. However the mechanisms involved in this diagnosis procedure are poorly understood. We present a clinical autofluorescence imaging study to assess the depth of the principal con ...

2006

Clinical fluorescence spectroscopy and imaging for the detection of early carcinoma by autofluorescence bronchoscopy and the study of the protoporphyrin IX pharmacokinetics in the endometrium

Tanja Gabrecht

The aim of this thesis is to optimise and gain fundamental information on two applications of photomedicine using fluorescence imaging and spectrofluorometry: (1) the detection of early bronchial cancer by autofluorescence imaging and (2) the endometrial a ...

EPFL2006

Extended focus depth for Fourier domain optical coherence microscopy

Theo Lasser, Rainer Leitgeb, Martin Villiger, Adrian Bachmann, Lukas Steinmann

We report on a new detection scheme for Fourier domain optical coherence microscopy that exhibits high transverse resolution along an axially extended focal range. Nearly constant transverse resolution of ∼1.5 μm along a focal range of 200 μm is experiment ...

2006

Autofocus

A hybrid ultrasonic motor and electrorheological fluid clutch actuator for force-feedback in MRI/fMRI

A Hybrid Ultrasonic Motor and Electrorheological Fluid Clutch Actuator for Force-Feedback in MRI/fMRI

Inkjet Printing of SU-8; A Case Study for Microlenses

Inkjet printing of SU-8 for polymer-based MEMS a case study for microlenses

Improvement of the Contrast in Cancer Detection by Autofluorescence Bronchoscopy using a narrow spectral violet Excitation: A preliminary study

Blue-violet excited autofluorescence spectroscopy and imaging of normal and cancerous human bronchial tissue after formalin fixation

A Haptic Knob with a Hybrid Ultrasonic Motor and Powder Clutch Actuator

Improvement of the contrast in cancer detection by autofluorescence bronchoscopy using a narrow spectral violet excitation: A preliminary study

Clinical fluorescence spectroscopy and imaging for the detection of early carcinoma by autofluorescence bronchoscopy and the study of the protoporphyrin IX pharmacokinetics in the endometrium

Extended focus depth for Fourier domain optical coherence microscopy

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A Hybrid Ultrasonic Motor and Electrorheological Fluid Clutch Actuator for Force-Feedback in MRI/fMRI

A Haptic Knob with a Hybrid Ultrasonic Motor and Powder Clutch Actuator

A hybrid ultrasonic motor and electrorheological fluid clutch actuator for force-feedback in MRI/fMRI

Inkjet printing of SU-8 for polymer-based MEMS a case study for microlenses

Blue-violet excited autofluorescence spectroscopy and imaging of normal and cancerous human bronchial tissue after formalin fixation

Improvement of the Contrast in Cancer Detection by Autofluorescence Bronchoscopy using a narrow spectral violet Excitation: A preliminary study

Improvement of the contrast in cancer detection by autofluorescence bronchoscopy using a narrow spectral violet excitation: A preliminary study

Extended focus depth for Fourier domain optical coherence microscopy

Inkjet Printing of SU-8; A Case Study for Microlenses

Clinical fluorescence spectroscopy and imaging for the detection of early carcinoma by autofluorescence bronchoscopy and the study of the protoporphyrin IX pharmacokinetics in the endometrium