Electrical properties of tissues involved in the conduction of foetal ECG

1989 ◽  
Vol 27 (3) ◽  
pp. 322-324 ◽  
Author(s):  
T. F. Oostendorp ◽  
A. van Oosterom ◽  
H. W. Jongsma
Keyword(s):  
Electrical Properties ◽  
Electrical Properties Of Tissues ◽  
Foetal Ecg

Mathematical modeling of biological tissues electrical conductivity based on the ion electrodiffusion equations

2021 ◽  
Author(s):  
N.V. Kovalenko ◽  
K.V. Sovin ◽  
O.A. Ryabushkin
Keyword(s):  
Mathematical Modeling ◽  
Mathematical Model ◽  
Electrical Properties ◽  
Biological Tissue ◽  
Physiological State ◽  
Biological Tissues ◽  
Radiation Heating ◽  
Tissue Degradation ◽  
Simulation Results ◽  
Electrical Properties Of Tissues

Problem formulating. The vital processes of biological tissues are closely related to their electrical properties. An important task is to create a physical and mathematical model that will link the electrical properties of tissues to their physiological state. Goal. Construction of a model of biological tissue electrical properties based on the equations of ion electrodiffusion. Result. The paper presents the model of biological tissue electrical properties based on the ion electrodiffusion equations, and compares the simulation results with the experimental results presented in the literature. Practical meaning. The presented model can be used to describe processes occurring in tissue at the level of concentration and conductivity of ions in individual cells and cell membranes. In particular, the process of tissue degradation during laser radiation heating can be described.

scholarly journals Incorporation of Conductive Materials into Hydrogels for Tissue Engineering Applications

Polymers ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 1078 ◽  
Author(s):  
Ji Min ◽  
Madhumita Patel ◽  
Won-Gun Koh
Keyword(s):  
Tissue Engineering ◽  
Electrical Properties ◽  
Cardiac Tissue ◽  
In Situ Polymerization ◽  
Nerve Tissue ◽  
Conductive Materials ◽  
Conductive Hydrogel ◽  
Conductive Hydrogels ◽  
Electrical Properties Of Tissues

In the field of tissue engineering, conductive hydrogels have been the most effective biomaterials to mimic the biological and electrical properties of tissues in the human body. The main advantages of conductive hydrogels include not only their physical properties but also their adequate electrical properties, which provide electrical signals to cells efficiently. However, when introducing a conductive material into a non-conductive hydrogel, a conflicting relationship between the electrical and mechanical properties may develop. This review examines the strengths and weaknesses of the generation of conductive hydrogels using various conductive materials such as metal nanoparticles, carbons, and conductive polymers. The fabrication method of blending, coating, and in situ polymerization is also added. Furthermore, the applications of conductive hydrogel in cardiac tissue engineering, nerve tissue engineering, and bone tissue engineering and skin regeneration are discussed in detail.

Assessment of Treatment Efficacy in Patients with Genital Herpes in Terms of Electrical Properties of Tissues at Specific Acupuncture Points Using a Fuzzy Mathematical Model

2018 ◽  
Vol 51 (5) ◽  
pp. 364-367
Author(s):  
N. A. Korenevskiy ◽  
M. I. Lukashov ◽  
V. V. Dmitrieva ◽  
E. V. Pis’mennaya ◽  
A. V. Ivanov ◽  
...  
Keyword(s):  
Mathematical Model ◽  
Electrical Properties ◽  
Genital Herpes ◽  
Treatment Efficacy ◽  
Acupuncture Points ◽  
Electrical Properties Of Tissues

Electrical Properties of Tissues in Shock Therapy

1942 ◽  
Vol 49 (4) ◽  
pp. 571-575 ◽  
Author(s):  
F. Offner
Keyword(s):  
Electrical Properties ◽  
Shock Therapy ◽  
Electrical Properties Of Tissues

scholarly journals Incorporation of Conductive Materials into Hydrogels for Tissue Engineering Applications

2018 ◽  
Author(s):  
Ji Hong Min ◽  
Won-Gun Koh
Keyword(s):  
Mechanical Properties ◽  
Tissue Engineering ◽  
Electrical Properties ◽  
Human Body ◽  
Engineering Applications ◽  
Conductive Material ◽  
Conductive Materials ◽  
Conductive Hydrogel ◽  
Conductive Hydrogels ◽  
Electrical Properties Of Tissues

In the field of tissue engineering, conductive hydrogels have been the most effective biomaterials to mimic the biological and electrical properties of tissues in the human body. The main advantages of conductive hydrogel include not only its physical properties, but also its adequate electrical properties, thus providing electrical signals to cells efficiently. However, when introducing a conductive material into a non-conductive hydrogel, a conflicting relationship between the electrical and mechanical properties may develop. This review examines the strengths and weaknesses of the generation of conductive hydrogels using various conductive materials and introduces the use of these conductive hydrogels in tissue engineering applications.

SU-E-T-394: Evaluation of Microwave Ablation Zone Variance Based On Reported Changes in Thermal and Electrical Properties of Tissues

2015 ◽  
Vol 42 (6Part18) ◽  
pp. 3424-3424
Author(s):  
G Deshazer ◽  
P Prakash ◽  
M Hagmann ◽  
D Dupuy ◽  
D Merck
Keyword(s):  
Electrical Properties ◽  
Microwave Ablation ◽  
Ablation Zone ◽  
Thermal And Electrical Properties ◽  
Electrical Properties Of Tissues ◽  
Zone Variance

In situ TEM measurements of the electrical properties of interface dislocations

1992 ◽  
Vol 50 (2) ◽  
pp. 1338-1339
Author(s):  
F. M. Ross ◽  
R. Hull ◽  
D. Bahnck ◽  
J. C. Bean ◽  
L. J. Peticolas ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Electronic Device ◽  
In Situ Tem ◽  
Device Performance ◽  
Misfit Dislocations ◽  
Electrical Characteristics ◽  
Strained Layer ◽  
Transmission Electron ◽  
Interfacial Dislocations

We describe an investigation of the electrical properties of interfacial dislocations in strained layer heterostructures. We have been measuring both the structural and electrical characteristics of strained layer p-n junction diodes simultaneously in a transmission electron microscope, enabling us to correlate changes in the electrical characteristics of a device with the formation of dislocations.The presence of dislocations within an electronic device is known to degrade the device performance. This degradation is of increasing significance in the design and processing of novel strained layer devices which may require layer thicknesses above the critical thickness (hc), where it is energetically favourable for the layers to relax by the formation of misfit dislocations at the strained interfaces. In order to quantify how device performance is affected when relaxation occurs we have therefore been investigating the electrical properties of dislocations at the p-n junction in Si/GeSi diodes.

The morphologies and electrical properties of indium contacts on (100) cadmium telluride surfaces

1992 ◽  
Vol 50 (2) ◽  
pp. 1422-1423
Author(s):  
A.M. Letsoalo ◽  
M.E. Lee ◽  
E.O. de Neijs
Keyword(s):  
Electrical Properties ◽  
Cadmium Telluride ◽  
Methanol Solution ◽  
Electrical Characteristics ◽  
Metal Contacts ◽  
Deposition Technique ◽  
Interfacial Layers ◽  
Semiconductor Contacts ◽  
Grown Single Crystal ◽  
Diamond Abrasive

Semiconductor devices require metal contacts for efficient collection of electrical charge. The physics of these metal/semiconductor contacts assumes perfect, abrupt and continuous interfaces between the layers. However, in practice these layers are neither continuous nor abrupt due to poor nucleation conditions and the formation of interfacial layers. The effects of layer thickness, deposition rate and substrate stoichiometry have been previously reported. In this work we will compare the effects of a single deposition technique and multiple depositions on the morphology of indium layers grown on (100) CdTe substrates. The electrical characteristics and specific resistivities of the indium contacts were measured, and their relationships with indium layer morphologies were established.Semi-insulating (100) CdTe samples were cut from Bridgman grown single crystal ingots. The surface of the as-cut slices were mechanically polished using 5μm, 3μm, 1μm and 0,25μm diamond abrasive respectively. This was followed by two minutes immersion in a 5% bromine-methanol solution.

Formation of high temperature phase in flash-evaporated SnSe films

1990 ◽  
Vol 48 (4) ◽  
pp. 698-699
Author(s):  
J.P.S. Hanjra
Keyword(s):  
Thin Films ◽  
Electrical Properties ◽  
Energy Gap ◽  
Dominant Role ◽  
Fine Powder ◽  
High Temperature Phase ◽  
Temperature Phase ◽  
Water Mixture ◽  
Flash Evaporation ◽  
Photovoltaic Applications

Tin mono selenide (SnSe) with an energy gap of about 1 eV is a potential material for photovoltaic applications. Various authors have studied the structure, electronic and photoelectronic properties of thin films of SnSe grown by various deposition techniques. However, for practical photovoltaic junctions the electrical properties of SnSe films need improvement. We have carried out investigations into the properties of flash evaporated SnSe films. In this paper we report our results on the structure, which plays a dominant role on the electrical properties of thin films by TEM, SEM, and electron diffraction (ED).Thin films of SnSe were deposited by flash evaporation of SnSe fine powder prepared from high purity Sn and Se, onto glass, mica and KCl substrates in a vacuum of 2Ø micro Torr. A 15% HF + 2Ø% HNO3 solution was used to detach SnSe film from the glass and mica substrates whereas the film deposited on KCl substrate was floated over an ethanol water mixture by dissolution of KCl. The floating films were picked up on the grids for their EM analysis.

Sign in / Sign up

Export Citation Format

Share Document