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Exploring the micro- and nanoworld with cubic centimetre-sized autonomous microrobots (2004)

Estaña,, R. ; Seyfried,, J. ; Schmoeckel,, F. ; [et al.]

Bradford : Emerald

Industrial robot 31 (2004), S. 159-178

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ISSN: 0143-991X

Source: Emerald Fulltext Archive Database 1994-2005

Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Notes: In order to bridge the increasing gap between the micro- and nanotechnologies, a European consortium is currently developing and investigating a cluster of mobile, wireless cubic centimetre-sized microrobots. The control and sensor issues which are to be solved for such a robot system are demanding. This paper describes the work carried out by one of the project partners. An interferometrical principle employing the so-called "mechanical" interferometer based on the Moiré-effect is used for the position sensor system. Further sensor systems involve "local" microscope cameras, for which the extraction of depth information is crucial.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1108/01439910410522847

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Simulation of frontal orbital advancement (1999)

Grabowski, H. A. ; Hassfeld, S. ; Krempien, R. ; [et al.]

Springer

Virtual reality 4 (1999), S. 235-240

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ISSN: 1434-9957

Keywords: Mesh generation ; Geometric modelling ; finite element models ; Virtual cutting ; VR-based surgery ; Volume measurement

Source: Springer Online Journal Archives 1860-2000

Topics: Computer Science

Notes: Abstract In this paper, we present a system for performing a complex surgical intervention using virtual reality (VR) technology. With the aid of the system, the intervention can be planned and simulated exactly before performing it in reality and important additional information can be achieved during the simulation. Before working in VR, finite element models of the patient's head are generated form CT-images. Based on these models, additional work is done in VR, where the patient's skull is cut into several pieces, which are then re-positioned. Based on moving and shifting the obtained pieces, the goal is to increase the volume inside the skull, which is called intracranial volume. Until now, it was not possible to measure the achieved increase of the intracranial volume. However, by using our system is it now possible to calculate this volume online during each step of our virtual intervention. The obtained results are used for the surgical intervention in reality.