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Hannes Bleuler

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Publications associées (125)

Terrain-based Navigation for Underwater Vehicles Using Side Scan Sonar Images

Hannes Bleuler, Severin Stalder

Underwater navigation challenges the research community as a reliable navigation system is unavailable. Correctly matched landmarks could compensate the drift of dead reckoning navigation systems. Furthermore, they could be useful in side scan sonar image ...

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

A modular simulation framework for colonoscopy using a new haptic device

Hannes Bleuler, Ulrich Spälter, Evren Samur

We have developed a multi-threaded framework for colonoscopy simulation utilising OpenGL with an interface to a real-time prototype colonoscopy haptic device. A modular framework has enabled us to support multiple haptic devices and efficiently integrate n ...

IOS Press2008

Fabrication of metallic nanoparticles by electrochemical discharges

Hannes Bleuler, Ashwin Lal

A method for the fabrication of metallic nanoparticles in large quantities by electrochemical discharges is presented. In an aqueous electrolyte, large current density (similar to 1 A/mm(2) at similar to 20 V) leads to the formation of a 'gas film' around ...

Elsevier2008

Development of a Microsurgery Training System

Hannes Bleuler, Fei Wang, Etienne Burdet

Surgeons require significant training to acquire sufficient dexterity and hand-eye coordination to manipulate objects skilfully under the microscope. This paper presents a computer-based real-time simulation of microsurgery as well as the hardware setup. I ...

IEEE2008

A Real-Time Simulator for Interventional Radiology

Hannes Bleuler, Lindo Robert Duratti, Fei Wang, Evren Samur

Interventional radiologists manipulate guidewires and catheters and steer stents through the patient’s vascular system under X-ray imaging for treatment of vascular diseases. The complexity of these procedures makes trainingmandatory in order to master han ...

2008

Instrumentation of a Clinical Colonoscope for Surgical Simulation

Hannes Bleuler, Pascal Maillard, Lionel Flaction, Evren Samur

This paper describes the instrumentation of a clinical colonoscope needed for a novel colonoscopy simulation framework. The simulator consists of a compact and portable haptic interface and a virtual reality environment to provide real-time visualization. ...

2008

A Haptic Interface with Motor/Brake System for Colonoscopy Simulation

Hannes Bleuler, Ulrich Spälter, Lionel Flaction, Evren Samur

Training for colonoscopy, which is the examination and treatment of the colon, is often performed on real patients once the physician has passed the novice level. This increases the risk to the patient and lengthens the procedure time. Since a decade ago, ...

2008

Gait pattern prediction via bilateral neural ensemble recordings in motor cortex in rats

Hannes Bleuler, Solaiman Shokur, Miguel Nicolelis

We are interested in developing and building an experimental system for controlling a quadruped robot with a brain-derived signal of a rat. We recorded large ensembles of neurones in left M1 and right M1 and S1 using chronically implanted multi-electrodes ...

Fens2008

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

Hannes Bleuler, Roger Gassert, Dominique Chapuis, 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

Integration of Electrostatic Glass Motor into the UHV Chamber of a Caesium Atomic Clock

Roland Moser, Hannes Bleuler, Laurent Sache

2007

Control of a Haptic Interface and a Micromachining Setup with an Open Source Real-Time System

Rolf Wüthrich, Hannes Bleuler, Pascal Maillard, Ulrich Spälter, Lionel Flaction, Evren Samur

Open source software have evolved into powerful tools for real-time control of mechatronic systems. They are of interest for academic purposes, as they promise high flexibility at low cost. In this paper, we investigate the performance of an open source co ...

2007

A Task Specific Kinematic Design Methodology With Application to a 4-DOF Haptic Interface

Hannes Bleuler, Ulrich Spälter

Task specific mechanism design for spatial linkages has remained a challenge. In this paper we present a kinematic design methodology, which combines the formalism of the Lie Group method with the effectiveness of creativity techniques from ’integrated pro ...

2007

Generic and Systematic Evaluation of Haptic Interfaces Based on Testbeds

Hannes Bleuler, Ulrich Spälter, Fei Wang, Evren Samur

The purpose of evaluation procedures is to achieve both qualitative and quantitative statements on haptic rendering realism and performance. Since a haptic interface provides an interaction between a user and a virtual environment, fidelity of a haptic int ...

IEEE2007

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

Hannes Bleuler, Roger Gassert, Dominique Chapuis, Xavier Michel, Etienne Burdet

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

Ligament balancing in TKA: Evaluation of a force-sensing device and the influence of patellar eversion and ligament release

Thomas Maeder, Hannes Bleuler, Denis Crottet

Ligament balancing in total knee arthroplasty may have an important influence on joint stability and prosthesis lifetime. In order to provide quantitative information and assistance during ligament balancing, a device that intraoperatively measures knee jo ...

Elsevier2007

A Computer-Based Real-Time Simulation of Interventional Radiology

Hannes Bleuler, Lindo Robert Duratti, Ulrich Spälter, Fei Wang, Evren Samur

Interventional radiology is a minimally invasive procedure where thin instruments, guidewires and catheters or stents are steered through the patient’s vascular system under X- ray imaging for treatment of vascular diseases. The complexity of these procedu ...

2007

A systematic characterization method for gravity-feed micro-hole drilling in glass with spark assisted chemical engraving (SACE)

Rolf Wüthrich, Hannes Bleuler, Ulrich Spälter

Gravity-feed drilling is the most commonly used method for micro-hole drilling in glass with spark assisted chemical engraving (SACE). This paper proposes a method allowing the systematic characterization of this drilling method. The influences of voltage, ...

2006

Hybrid Ultrasonic Motor and Electrorheological Clutch System for MR-Compatible Haptic Rendering

Hannes Bleuler, Roger Gassert, Dominique Chapuis, Etienne Burdet

Using haptic interfaces in combination with functional magnetic resonance imaging (fMRI) could lead to important insights into the brain mechanisms of human motor control and related dysfunctions. However, in addition to the usual requirements for haptic i ...

IEEE2006

MRI/fMRI-Compatible Robotic System With Force Feedback for Interaction With Human Motion

Roland Moser, Hannes Bleuler, Roger Gassert, Etienne Burdet

This paper presents a robotic system that is compatible with anatomical magnetic resonance imaging (MRI) as well as with the more sensitive functional MRI (fMRI), and can safely and smoothly interact with humanmotion during the imaging. The system takes ad ...

2006

Position Controlled Diamagnetic Linear Conveyor

Hannes Bleuler, Dominique Chapuis, Benjamin Burns, François Barrot, Thomas Bosgiraud

Magnetic levitation is an interesting concept in applications where friction and wear-particle contamination should be avoided. In this respect, a former study has shown that diamagnetic levitation, in conjunction with an electrodynamic impulse drive, is a ...

2006

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