WorldCat Identities

Wallmersperger, Thomas

Works: 9 works in 15 publications in 1 language and 96 library holdings
Genres: Conference papers and proceedings 
Roles: Other, Opponent, 958
Publication Timeline
Most widely held works by Thomas Wallmersperger
Electroactive polymer actuators and devices (EAPAD) 2009 : 9-12 March 2009, San Diego, California, United States by Yoseph Bar-Cohen( )

7 editions published between 2008 and 2009 in English and held by 74 WorldCat member libraries worldwide

Synthesis, Characterization and Chemical Functionalization of Nitrogen Doped Carbon Nanotubes for the Application in Gas- and Bio-Sensors by Yangxi Fu( Book )

1 edition published in 2018 in English and held by 15 WorldCat member libraries worldwide

Adjustable fluid and particle permeation through hydrogel composite membranes( )

in English and held by 1 WorldCat member library worldwide

Membranes act as smart structures in respect to their permeation abilities. Control of particle and fluid permeation through a synthetic membrane can be achieved by using different effects like size-exclusion or electromagnetic interactions that occur between the particles and membrane pores. The simulation of controlled permeability provides an insight into the smart behavior of membranes for chemical signal processing, sensing interfaces or lab-on-a-chip devices. In the current work, we model the underlying physical processes on a microfluidic level using the engineer’s approach of laminar flow through pipes. Different pore geometries inside a composite membrane system consisting of a polyethylene terephthalate support membrane and a poly(N-isopropylacrylamide) hydrogel-layer are investigated. Simulations for different states of thermally induced pore opening are performed for free and blocked states. From the results we derive paradigms for the design of a membrane system for microfluidic cell-size profiling considering stimulus-range, pore shape and measurement setup
Investigation of Multi Wall Carbon Nanotubes and Nanotube assemblies by a molecular mechanics approach( )

1 edition published in 2014 in English and held by 1 WorldCat member library worldwide

Abstract The present work describes the modeling techniques applied for the investigation of assemblies of Carbon Nanotubes (CNTs) and Multi Wall Carbon Nanotubes (MWNTs). Motivated from possible future applications, for instance in new composite materials, the investigations of the interaction behavior of individual Carbon Nanotubes within an assembly of Carbon Nanotubes is mandatory in order to understand the behavior of larger scale structures made from CNTs, e.g. Carbon Nanotube fibers. The present research applies the Lennard‐Jones potential for modeling the van‐der‐Waals interaction occurring between the nanotubes realizing the interaction behavior. The individual Carbon Nanotubes within the assembly are assumed to be rigid. All van‐der‐Waals bonds are taken into account in order to calculate an overall potential surface describing the behavior of the investigated structure. An example consisting of a Multi Wall Carbon Nanotube made of three armchair Single Wall Carbon Nanotubes (SWNTs) is investigated (with and without additional outer force) with respect to equilibrium positions of the structure. (© 2014 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Smart control of a soft robotic hand prosthesis by Astrid Rubiano Fonseca( )

1 edition published in 2016 in English and held by 1 WorldCat member library worldwide

The target of this thesis disertation is to develop a new Smart control of a soft robotic hand prosthesis for the soft robotic hand prosthesis called ProMain Hand, which is characterized by:(i) flexible interaction with grasped object, (ii) and friendly-intuitive interaction between human and robot hand. Flexible interaction results from the synergies between rigid bodies and soft bodies, and actuation mechanism. The ProMain hand has three fingers, each one is equipped with three phalanges: proximal, medial and distal. The proximal and medial are built with rigid bodies,and the distal is fabricated using a deformable material. The soft distal phalange has a new smart force sensor, which was created with the aim to detect contact and force in the fingertip, facilitating the control of the hand. The friendly intuitive human-hand interaction is developed to facilitate the hand utilization. The human-hand interaction is driven by a controller that uses the superficial electromyographic signals measured in the forearm employing a wearable device. The wearable device called MyoArmband is placed around the forearm near the elbow joint. Based on the signals transmitted by the wearable device, the beginning of the movement is automatically detected, analyzing entropy behavior of the EMG signals through artificial intelligence. Then, three selected grasping gesture are recognized with the following methodology: (i) learning patients entropy patterns from electromyographic signals captured during the execution of selected grasping gesture, (ii) performing a support vector machine classifier, using raw entropy data extracted in real time from electromyographic signals
Development of an artificial muscle for a soft robotic hand prosthesis by José Luis Ramirez Arias( )

1 edition published in 2016 in English and held by 1 WorldCat member library worldwide

In the field of robotic hand prosthesis, the use of smart and soft materials is helpful in improving flexibility, usability, and adaptability of the robots, which simplify daily living activities of prosthesis users. However, regarding the smart materials for artificial muscles, technologies are considered to be far from implementation in anthropomorphic robotic hands. Therefore, the target of this thesis dissertation is to reduce the gap between smart material technologies and robotic hand prosthesis. Five central axes address the problem: i)identification of useful grasping gestures and reformulation of the robotic hand mechanism, ii) analysis of human muscle behavior to mimic human grasping capabilities, iii) modeling robot using the hybrid model DHKK-SRQ for the kinematics and the virtual works principle for dynamics, iv) definition of actuation requirements considering the synergy between prehension conditions and robot mechanism, and v) development of a smart material based actuation system.This topics are addressed in four chapters:1. Human hand movement analysis toward the hand prosthesis requirements2. Design and modeling of the soft robotic hand ProMain-I3. Mechatronic assessment of Prosthetic hand4. Development of an artificial muscle based on smart materials
Special issue on design modeling and experiments of adaptive stractures and smart systems II( Book )

1 edition published in 2009 in English and held by 1 WorldCat member library worldwide

Modeling and simulation of hydrogels for the application as finger grippers( )

in English and held by 1 WorldCat member library worldwide

A chemo-electro-mechanical continuum model developed previously by the authors is utilized in this article to simulate electrically driven hydrogels for the application as finger grippers. To that end, a system consisting of an anionic gel and a cationic gel immersed in NaCl solution bath is discretized and numerically solved. An electric field is then applied between two electrodes on top and bottom of the simulation domain. For the numerical treatment of this study, the finite element method is exploited. By gradual increase in the electric potential between the two electrodes, the bending movement of the gels is realized. The process leading to bending of the gels is elaborated in detail in this article. It is concluded that our approach proves to be a practical tool for simulation of the closing and opening mechanism of a finger gripper stimulated by electric field
Design, modelling and experiments of adaptive structures and smart systems( Book )

1 edition published in 2008 in English and held by 1 WorldCat member library worldwide

Audience Level
Audience Level
  Kids General Special  
Audience level: 0.74 (from 0.69 for Electroact ... to 0.95 for Smart cont ...)

English (15)