Tim Wortmann

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Carbon nanotubes (CNTs) are one of the most promising materials for nanoelectronic applications. Before bringing CNTs into large-scale production, a reliable nanorobotic system for automated handling and characterization as well as prototyping of CNT-based components is essential. This paper presents the NanoLab setup, a nanorobotic system that combines(More)
This article presents a software architecture for image processing applications. Its intended use is in the automation of manipulation processes at the microand nanoscale. The main requirements for this architecture are the capability for real-time processing, the flexibility to cover a wide range of different applications and simplicity of usage. Some of(More)
The propulsion of nano-ferromagnetic objects by means of MRI gradients is a promising approach to enable new forms of therapy. In this work, necessary techniques are presented to make this approach work. This includes path planning algorithms working on MRI data, ferromagnetic artifact imaging and a tracking algorithm which delivers position feedback for(More)
In this paper, the concept and first results of a novel toolbox for nanoscale characterization are presented. A nanorobotic AFM system is being developed and integrated into a high resolution SEM/FIB system allowing nanoanalysis, -manipulation and -structuring. The compact and modular AFM setup enables probe- as well as sample-scanning and uses self-sensing(More)
MRI based nano- and microrobotics show good potential for new targeted therapies tackling e.g. cancer. In this paper, a system developed for the propulsion and navigation of small ferromagnetic objects only using clinical MRI systems is evaluated in experiments. The experiments include propulsion of an untethered ferromagnetic object against a pulsatile(More)
The handling of nanoscale objects is a field with high prospects and good perspectives. This paper presents different necessary image processing methods and algorithms, which are needed to enable the reliable automation of nanohandling processes. The imaging sensor used to gain access to the nanoscale world is the scanning electron microscope (SEM). Tasks(More)
Kurzfassung. Durch die Modifikation einer MRT Pulssequenz und eines Rekonstruktionsprogrammes kann auf magnetische Objekte zeitlich verschränkt Kraft ausgeübt und deren Position bestimmt werden. Zusammen mit einer geeigneten Regelung entsteht ein vielseitiges robotisches System. Es werden hierzu Objekterkennung, -verfolgung und antrieb implementiert und(More)
AIM The aim of the present study was to improve and confirm a time trial (TT) based method for determining anaerobic threshold (AnT) requiring minimal equipment. METHODS Eighteen participants underwent three to five all-out TTs for at the most 60 min. Velocity of the TTs was adapted in 0.1 or 0.2 m*s-1 steps until maximal velocity maintainable for at(More)