electronic engineering department universitat politècnica de catalunya
DESCRIPTION
Fast Electrical Impedance Spectroscopy measurement techniques for dynamic bioimpedance characterization. Ph.D. Student: B.Sánchez Thesis Advisor: R.Bragós. Electronic Engineering Department Universitat Politècnica de Catalunya. Contents. 1.- Introduction 2.- Motivation - PowerPoint PPT PresentationTRANSCRIPT
ACTIVITIES OF THE GROUP OF HIGH PERFORMANCE INTEGRATED CIRCUITS DESIGN GROUP
Fast Electrical Impedance Spectroscopy measurement techniques for dynamicbioimpedance characterization.
Ph.D. Student: B.SnchezThesis Advisor: R.Brags
Electronic Engineering DepartmentUniversitat Politcnica de
Catalunya
Contents
1.- Introduction2.- Motivation3.- Multitone Burst Signal4.-
Results5.- Conclusions
Laplace/Fourier Transform
Transfer Function
Linear Time Invariant system: Impedance
Introduction
1
1st Barcelona Forum on Ph.D. Research in Electronic Engineering
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Extracellular matrix
Cell membrane
HF
LF
Biological systems: Bioimpedance
Introduction
Equivalent Circuit
Ex-vivo tissue characterization:
Introduction
3
Introduction
In-vitro static cell culture growth characterization:
4
Motivation
Challenge (I): In-vitro myocites cell culture growing
characterization for tissue engineering applications
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Link video
Challenge (II): In-vivo myocites patch monitoring and
characterization:
Motivation
6
Multitone Burst Signals
Time domain:
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Multitone Burst Signals
Frequency domain:
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Newman:
Schroeder:
Genetic Algorithm:
Multitone Burst Signals
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Crest Factor:
Frequency Plan:
Avoid intermodulation products: shift original tones for BW
guard.
Multitone Burst Signals
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Multitone bursts with Bilateral Quasi Logarithmic Frequency
Distribution:
Multitone Burst Signals
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Measurement Hardware Setup:
Results
12
Custom FPGA based arbitrary signal generator.DAC 12bits,
16Msamples, 40Ms/s, 1st order hold.Ethernet capable
controller.
PXI solutionPXI-5422: AWG, 200Ms/s, 32MB,16 bits. PXIe-5122: AD
2channels, 100Ms/s, 64MB/channel, 14bits.PXI-2530: multiplexation
matrix, 128 channels.
Estimation of the Growth Cell Curve
Results
Yeast cell suspension settlement characterization:
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Conclusions
Non invasive and non destructive technique for passive electrical
properties charaterization of biological materials.
Valid measurement method for cell growth estimator and suitable for dynamic biological materials and systems characterization.
Wide application areas: electroporation, tomography, cell counting in microfludic, biosensors, tissue engineering,..
The final application field is the cardiac tissue
characterization in regenerative medicine applications.
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Fast Electrical Impedance Spectroscopy measurement techniques for dynamicbioimpedance characterization.
Ph.D. Student: B.SnchezThesis Advisor: R.Brags
Electronic Engineering DepartmentUniversitat Politcnica de
Catalunya
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