2013

• Diego Lujan Villarreal, Dietmar Schroeder, and Wolfgang H. Krautschneider
  Equivalent Circuit Model to Simulate Neurostimulation by using Different Waveforms
  In Tagungsband "ICT Open 2013", 2013
  Eindhoven, November 27-28, 2013
  Abstract:
  
  BibTeX:
  @inproceedings{Lujan:Waveforms:2013,
  author = {Diego Lujan Villarreal and Dietmar Schroeder and and Wolfgang H. Krautschneider},
  title = {{E}quivalent {C}ircuit {M}odel to {S}imulate {N}eurostimulation by using {D}ifferent {W}aveforms},
  year = {2013},
  month = {11},
  booktitle = {ICT Open 2013},
  note = {Eindhoven, November 27-28, 2013} }
  [BibTeX]
  
  
• Lewis, S. and Russold, M. and Dietl, H. and Ruff, R. and Cardona, J.M. and Hoffmann, K.-P. and Abu-Saleh, L. and Schroeder, D. and Krautschneider, W.H. and Westendorff, S. and Gail, A. and Meiners, T. and Kaniusas, E.
  Fully Implantable Multi-Channel Measurement System for Acquisition of Muscle Activity
  Artikel in "IEEE Transactions on Instrumentation and Measurement", vol. 62, Nr. 7, p. 1972-1981, 2013
  Abstract:
  This paper presents intramuscular electromyogram (EMG) signals obtained with a fully implantable measurement system that were recorded during goal directed arm movements. In a first implantation thin film electrodes were epimysially implanted on the deltoideus of a rhesus macaque and the encapsulation process was monitored by impedance measurements. Increase of impedance reached a constant level after four weeks indicating a complete encapsulation of electrodes. EMG recorded with these electrodes yielded a signal-to-noise ratio of about 80 dB at 200 Hz. The EMG recorded during goal-directed arm movements showed a high similarity to movements in the same direction and at the same time presented clear differences between different movement directions intime domain. Six classifiers and seven time and frequency domain features were investigated with the aim of discriminating the direction of arm movement from EMG signals. Reliable recognition of arm movementswas achieved for a subset of the movements under investigation only. A second implantation of the whole measurement system for nine weeks demonstrated simple handling during surgery and good biotolerance in the animals.
  BibTeX:
  @article{Lewis:IEEETransIM:2013,
  author = {Lewis and S. and Russold and M. and Dietl and H. and Ruff and R. and Cardona and J.M. and Hoffmann and K.-P. and Abu-Saleh and L. and Schroeder and D. and Krautschneider and W.H. and Westendorff and S. and Gail and A. and Meiners and T. and Kaniusas and E.},
  title = {{F}ully {I}mplantable {M}ulti-{C}hannel {M}easurement {S}ystem for {A}cquisition of {M}uscle {A}ctivity},
  year = {2013},
  month = {07},
  journal = {IEEE Transactions on Instrumentation and Measurement},
  number = {7},
  pages = {1972-1981},
  volume = {62} }
  [Abstract] [BibTeX] [DOI]
  
  
• A. Koops, B.T. Bradford, D. Schroeder, W.H. Krautschneider, G. Adam, J.H. Buhk
  An integrated stent-graft for noninvasive 4-dimensional aneurysm sac pressure monitoring after endovascular aortic aneurysm repair (EVAR): First in vivo results in a porcine model
  Artikel in "Journal of Vascular and Interventional Radiology", vol. 24, Nr. 4, p. S176, 2013
  Abstract:
  
  BibTeX:
  @article{Koops:JVIR:2013,
  author = {A. Koops and B.T. Bradford and D. Schroeder and W.H. Krautschneider and G. Adam and J.H. Buhk},
  title = {{A}n integrated stent-graft for noninvasive 4-dimensional aneurysm sac pressure monitoring after endovascular aortic aneurysm repair ({E}{V}{A}{R}): {F}irst in vivo results in a porcine model},
  year = {2013},
  month = {04},
  journal = {Journal of Vascular and Interventional Radiology},
  number = {4},
  pages = {S176},
  volume = {24} }
  [BibTeX] [DOI]
  
  
• B. Bradford, D. Schroeder, W. Krautschneider
  A gain boosted folded cascode using telescopic boosting amplifiers with switched capacitor input level shifters
  In Tagungsband "Biomedical Engineering (BioMed 2013)", 2013, p. 89-96
  February 13-15, 2013 Innsbruck, Austria
  Abstract:
  This paper describes a single stage fully differential folded cascode operational transconductance amplifier (OTA) with fully differential gain boosting amplifiers designed in 1.2 VDC 130nm CMOS process technology. The amplifier is the driver for an analog to digital converter (ADC) of a blood pressure sensing medical implant which uses wireless power transmission as its energy source. The medical implant’s design specifications require an amplifier with a an output voltage swing of ±850mV, and a closed loop settling time of 125μs to an accuracy of 0.025% while driving a differential load of 5pF with a feedback factor of F = 1/20, all with an absolute minimum of power consumption. The gain boosting amplifiers are telescopic cascoded amplifiers, which, by their design, have an input and output common mode voltage relationship which is opposite to what is needed for a gain boosted cascode configuration. To correct for this, a method for DC shifting the amplifier’s input voltage using a switched capacitor network is presented.
  BibTeX:
  @inproceedings{Bradford:BIOMED:2013,
  author = {B. Bradford and D. Schroeder and W. Krautschneider},
  title = {{A} gain boosted folded cascode using telescopic boosting amplifiers with switched capacitor input level shifters},
  year = {2013},
  month = {02},
  booktitle = {Biomedical Engineering (BioMed 2013)},
  note = {February 13-15, 2013 Innsbruck, Austria},
  pages = {89-96} }
  [Abstract] [BibTeX] [DOI]
  
  
• Ricardo Starbird, Wolfgang Krautschneider, Grit Blume, and Wolfgang Bauhofer
  In Vitro Biocompatibility Study and Electrical Properties of the PEDOT, PEDOT Collagen-Coat, PEDOT Nanotubes and PEDOT Aerogels for Neural Electrodes
  In Tagungsband "Biomedical Engineering (BioMed 2013)", 2013
  February 13-15, 2013 Innsbruck, Austria
  Abstract:
  The aim of this study is to evaluate the cytotoxicity of Poly(3,4-ethylenedioxythiophene) (PEDOT), PEDOT-collagen and PEDOT nanostructured coatings for neural electrodes. Incorporation of cell growth factors and the structuration of supporting material are two strategies to improve cell adhesion and biocompatibility in order to produce better and more specific neural implants. PEDOT coat, PEDOT-collagen coat, PEDOT nanotubes and PEDOT aerogel were tested for biocompability using the standard ISO 10993-5. PEDOT and PEDOT-Collagen coats were deposited via galvanostatic electropolymerization from a NaPSS micellar dispersion. In addition PEDOT nanotubes were obtained by hard polycarbonate template and PEDOT aerogels were chemically produced through a soft starch template. PEDOT samples were studied for biocompatibility, characterized by LCRmeter and Scanning electron microscopy (SEM). Biocompatibility test verified the absence of cytotoxic effects in all the PEDOT samples.
  BibTeX:
  @inproceedings{STARBIRD:BIOMED:2013,
  author = {Ricardo Starbird and Wolfgang Krautschneider and Grit Blume and and Wolfgang Bauhofer},
  title = {{I}n {V}itro {B}iocompatibility {S}tudy and {E}lectrical {P}roperties of the {P}{E}{D}{O}{T}, {P}{E}{D}{O}{T} {C}ollagen-{C}oat, {P}{E}{D}{O}{T} {N}anotubes and {P}{E}{D}{O}{T} {A}erogels for {N}eural {E}lectrodes},
  year = {2013},
  month = {02},
  booktitle = {Biomedical Engineering (BioMed 2013)},
  note = {February 13-15, 2013 Innsbruck, Austria} }
  [Abstract] [BibTeX] [DOI]
  
  
• B.T. Bradford, W. Krautschneider, D. Schroeder
  Design of a Switched Capacitor Fully Differential Capacitive Pressure Sensor with Unbalanced Parasitic Input Capacitances in 130 nm CMOS Technology
  In Tagungsband "Proceedings of the International Conference on Biomedical Electronics and Devices (BIODEVICES 2013)", Verlag SCITEPRESS, 2013, Nr. 38, p. 137-142
  Barcelona, Spain, 11-14 February, 2013
  Abstract:
  A switched capacitor amplifier for measuring a micro-machined capacitive pressure sensor using correlated double sampling has been designed in 130nm CMOS technology. The switched capacitor amplifier design uses a combination of correlated double sampling, input offset cancellation, and output offset cancellation to help reject 1/f noise and DC offset mismatch. The noise of the system has been analyzed and optimized for switched capacitor correlated double sampling operation, and a method for sizing the operational transconductance amplifier (OTA) components according to the system noise and accuracy requirements is presented. The entire sensor sampling system achieves 0.75 mmHg resolution at 4 ksps with a total current consumption less than 3 μA when used to measure a commercially available capacitive pressure sensor.
  BibTeX:
  @inproceedings{Bradford:BIODEVICES:2013,
  author = {B.T. Bradford and W. Krautschneider and D. Schroeder},
  title = {{D}esign of a {S}witched {C}apacitor {F}ully {D}ifferential {C}apacitive {P}ressure {S}ensor with {U}nbalanced {P}arasitic {I}nput {C}apacitances in 130 nm {C}{M}{O}{S} {T}echnology},
  year = {2013},
  month = {02},
  booktitle = {Proceedings of the International Conference on Biomedical Electronics and Devices (BIODEVICES 2013)},
  note = {Barcelona, Spain, 11-14 February, 2013},
  number = {38},
  pages = {137-142},
  publisher = {SCITEPRESS} }
  [Abstract] [BibTeX]
  
  
• J.M. Tomasik, W. Galjan, K.M. Hafkemeyer, D. Schroeder, W.H. Krautschneider
  A configurable integrated circuit for biomedical signal acquisition
  In Tagungsband "Biomedical Engineering Systems and Technologies (BIOSTEC 2011)", Verlag Springer, 2013, vol. 273, p. 43-56
  4th International Joint Conference, BIOSTEC 2011, Rome, Italy, 26-29 January 2011, Revised Selected Papers
  Abstract:
  
  BibTeX:
  @inproceedings{Tomasik:Springer:2013,
  author = {J.M. Tomasik and W. Galjan and K.M. Hafkemeyer and D. Schroeder and W.H. Krautschneider},
  title = {{A} configurable integrated circuit for biomedical signal acquisition},
  year = {2013},
  month = {01},
  booktitle = {Biomedical Engineering Systems and Technologies (BIOSTEC 2011)},
  note = {4th International Joint Conference, BIOSTEC 2011, Rome, Italy, 26-29 January 2011, Revised Selected Papers},
  pages = {43-56},
  publisher = {Springer},
  volume = {273} }
  [BibTeX] [DOI]
  
  
• Kuhl, Matthias and Gieschke, Pascal and Rossbach, Daniel and Hilzensauer, Sascha A and Panchaphongsaphak, Thanapon and Ruther, Patrick and Lapatki, Bernd G and Paul, Oliver and Manoli, Yiannos
  A wireless stress mapping system for orthodontic brackets using CMOS integrated sensors
  Artikel in "IEEE journal of solid-state circuits", vol. 48, Nr. 9, p. 2191--2202, 2013
  Abstract:
  
  BibTeX:
  @article{kuhl2013wireless,
  author = {Kuhl and Matthias and Gieschke and Pascal and Rossbach and Daniel and Hilzensauer and Sascha A and Panchaphongsaphak and Thanapon and Ruther and Patrick and Lapatki and Bernd G and Paul and Oliver and Manoli and Yiannos},
  title = {{A} wireless stress mapping system for orthodontic brackets using {C}{M}{O}{S} integrated sensors},
  year = {2013},
  journal = {IEEE journal of solid-state circuits},
  number = {9},
  pages = {2191--2202},
  publisher = {IEEE},
  volume = {48} }
  [BibTeX]
  
  
• Moranz, C and Kuhl, M and Zimmermann, D and Becker, J and Müller, C and Reinecke, H and Manoli, Y
  CMOS integrierte Spannungsversorgung basierend auf Mikro-Brennstoffzellen
  Artikel in "Mikrosystemtechnik 2013", 2013
  Abstract:
  
  BibTeX:
  @article{moranz2013cmos,
  author = {Moranz and C and Kuhl and M and Zimmermann and D and Becker and J and M{\"u}ller and C and Reinecke and H and Manoli and Y},
  title = {{C}{M}{O}{S} integrierte {S}pannungsversorgung basierend auf {M}ikro-{B}rennstoffzellen},
  year = {2013},
  journal = {Mikrosystemtechnik 2013},
  publisher = {VDE VERLAG GmbH} }
  [BibTeX]
  
  
• Kuhl, Matthias and Gieschke, Pascal and Paul, Oliver and Manoli, Yiannos
  Ein CMOS-Stresskartierungssystem mit 24 FET-basierten Stresssensoren für intelligente kieferorthopädische Brackets
  Artikel in "Mikrosystemtechnik 2013", 2013
  Abstract:
  
  BibTeX:
  @article{kuhl2013cmos,
  author = {Kuhl and Matthias and Gieschke and Pascal and Paul and Oliver and Manoli and Yiannos},
  title = {{E}in {C}{M}{O}{S}-{S}tresskartierungssystem mit 24 {F}{E}{T}-basierten {S}tresssensoren f{\"u}r intelligente kieferorthop{\"a}dische {B}rackets},
  year = {2013},
  journal = {Mikrosystemtechnik 2013},
  publisher = {VDE VERLAG GmbH} }
  [BibTeX]
  
  
• Nashwa Abo Elneel, Dietmar Schroeder, Wolfgang Krautschneider
  Programmable 2-channel ASIC for portable long-term monitoring of biomedical signals
  Artikel in "Activity Report 2012, Europractice IC Service", p. 16-17, 2013
  Abstract:
  
  BibTeX:
  @article{Europractice12,
  author = {Nashwa Abo Elneel and Dietmar Schroeder and Wolfgang Krautschneider},
  title = {{P}rogrammable 2-channel {A}{S}{I}{C} for portable long-term monitoring of biomedical signals},
  year = {2013},
  journal = {Activity Report 2012, Europractice IC Service},
  pages = {16-17} }
  [BibTeX]
  
  
• Rajeev Ranjan, Bryce Bradford
  Impact of process scaling on analog design performance from 350nm to 40nm
  In Tagungsband "4th IEEE Germany Student Conference Proceedings", 2013
  Hamburg , 6th-7th june 2013
  Abstract:
  
  BibTeX:
  @inproceedings{Ranjan:IEEE:2013,
  author = {Rajeev Ranjan and Bryce Bradford},
  title = {{I}mpact of process scaling on analog design performance from 350nm to 40nm},
  year = {2013},
  booktitle = {4th IEEE Germany Student Conference Proceedings},
  note = {Hamburg , 6th-7th june 2013} }
  [BibTeX]
  
  

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