Design & Manufacturing of Thermoelectric Energy Harvesters for Implantable Biomedical Applications PDF Download
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Author: Alic Chen
Publisher:
ISBN:
Category :
Languages : en
Pages : 78
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Book Description
Author: Alic Chen
Publisher:
ISBN:
Category :
Languages : en
Pages : 78
Get Book Here
Book Description
Author: Alic Chen
Publisher:
ISBN:
Category :
Languages : en
Pages : 322
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Book Description
This work examines the feasibility of applying thermoelectric generators as power sources for implantable applications. Thermoelectric design principles, manufacturing methods and novel materials are foundational aspects of the work. Rapid advancements in the field of biomedical engineering has led to the vast number of implantable medical devices developed within the last few decades. As implantable medical devices provide more functionality, sufficient energy storage while maintaining compactness becomes challenging. The lifetime of implanted medical devices will often be much shorter than the expected lifespan of patients, adding risks and costs to the patient in the form of additional surgical procedures. A perpetual power source that extends the longevity of implantable devices still remains elusive. This presents opportunities for solid-state thermal energy harvesting with thermoelectric energy generators (TEGs) that scavenge waste heat, the most abundant source of energy from the body. Thermoelectric energy generators (TEGs) provide solid-state energy by converting temperature differences into usable electricity. Since the fat in the human body provides thermal insulation, the largest temperature differences (typically 1-5 K) are found in the highest fat regions of the body. Bioheat transfer modeling shows that the optimal placement of TEGs for energy generation is in the abdomen under high convective conditions. Based on average 100 μW (at 1 V) input power requirements of implantable medical devices, thermoelectric and heat transfer design theories suggest a need for high aspect ratio thermoelectric elements in high density arrays to take advantage of the low temperature differences in the fat layer. In order to maximize power output, traditional thermoelectric device designs must be abandoned and a planar TEG device design is proposed as an effective and scalable method for implantable medical applications. Dispenser printing was then shown as a scalable and repeatable manufacturing method for depositing thick-film thermoelectric materials in the fabrication of planar TEGs. The use of printed fabrication methods led to the development and synthesis of novel printable composite thermoelectric materials. The thermoelectric properties of the printed thermoelectric materials were analyzed and carefully characterized as a function of temperature. The maximum dimensionless figure of merit (ZT) at 302K for an n-type Bi2Te3-epoxy composite was 0.18 when cured at 250°C, while the ZT of a p-type Sb2Te3-epoxy composite cured at 350°C was 0.34. A 50-couple TEG prototype with 5 mm x 640 μm x 90 μm printed element dimensions was fabricated on a polyimide substrate with evaporated metal contacts. The prototype device produced a power output of 10.5 μW at 61.3 μA and 171.6 mV for a temperature difference of 20K resulting in a device areal power density of 75 μW/cm2. The results of the work are promising and alternative methods to improve the performance of future devices are proposed. While the initial focus of this work was specific to the field of biomedical devices, the technologies that have been developed are applicable to other fields involving energy harvesting. The prospective impact of this work ultimately paves the path towards the advanced healthcare system of the future based on integrated autonomous wireless systems for the needs of "aging in place" or "aging at home" technologies.
Author: Shashank Priya
Publisher: Springer Science & Business Media
ISBN: 038776464X
Category : Technology & Engineering
Languages : en
Pages : 522
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Book Description
Energy Harvesting Technologies provides a cohesive overview of the fundamentals and current developments in the field of energy harvesting. In a well-organized structure, this volume discusses basic principles for the design and fabrication of bulk and MEMS based vibration energy systems, theory and design rules required for fabrication of efficient electronics, in addition to recent findings in thermoelectric energy harvesting systems. Combining leading research from both academia and industry onto a single platform, Energy Harvesting Technologies serves as an important reference for researchers and engineers involved with power sources, sensor networks and smart materials.
Author: Ryan Stevenson
Publisher:
ISBN:
Category : Medical electronics
Languages : en
Pages : 78
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Book Description
"The market for implantable medical devices is growing rapidly. Research and Markets predicts that by the end of 2015 the market for pacemakers will be 5.1 billion dollars, and a projected growth of 13.82% between 2013 and 2018. The average lifespan of an implantable medical device's battery is only 5 years, while the projected lifespan of the device itself is 10 years. There is an excess of invasive surgeries occurring to replace these batteries, costing the healthcare system millions of dollars and also causing patients a large degree of discomfort and pain. Thermoelectric generators have the potential to supplement and eventually replace these battery systems, allowing devices to reach their full lifespan. The process for developing thin film, and flexible thermoelectric generators was explored in this study with the intent of designing for biomedical applications. Screen-printing was used as the manufacturing method and several pastes were formulated and tested to compare their thermoelectric potential. A new breed of thermoelectric materials that were built from a bottom-up perspective was the precedent for this research. While they have shown great potential for creating bulk pellets, their application in thin films was still relatively unexplored. The most promising sample created had an electrical conductivity of 6775 S/m, a Seebeck of -125 [mu]V/m and a power factor of 105 [mu]W/m-K2. The potential and limitations of this process are discussed."--Boise State University ScholarWorks.
Author: David Michael Rowe
Publisher: CRC Press
ISBN: 1439840423
Category : Technology & Engineering
Languages : en
Pages : 1120
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Book Description
Comprising two volumes, Thermoelectrics and Its Energy Harvesting reviews the vast improvements in technology and application of thermoelectric energy with a specific intention to reduce and reuse waste heat and improve novel techniques for the efficient acquisition and use of energy.Materials, Preparation, and Characterization in Thermoelectrics i
Author: Alper Erturk
Publisher: John Wiley & Sons
ISBN: 1119991358
Category : Technology & Engineering
Languages : en
Pages : 377
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Book Description
The transformation of vibrations into electric energy through the use of piezoelectric devices is an exciting and rapidly developing area of research with a widening range of applications constantly materialising. With Piezoelectric Energy Harvesting, world-leading researchers provide a timely and comprehensive coverage of the electromechanical modelling and applications of piezoelectric energy harvesters. They present principal modelling approaches, synthesizing fundamental material related to mechanical, aerospace, civil, electrical and materials engineering disciplines for vibration-based energy harvesting using piezoelectric transduction. Piezoelectric Energy Harvesting provides the first comprehensive treatment of distributed-parameter electromechanical modelling for piezoelectric energy harvesting with extensive case studies including experimental validations, and is the first book to address modelling of various forms of excitation in piezoelectric energy harvesting, ranging from airflow excitation to moving loads, thus ensuring its relevance to engineers in fields as disparate as aerospace engineering and civil engineering. Coverage includes: Analytical and approximate analytical distributed-parameter electromechanical models with illustrative theoretical case studies as well as extensive experimental validations Several problems of piezoelectric energy harvesting ranging from simple harmonic excitation to random vibrations Details of introducing and modelling piezoelectric coupling for various problems Modelling and exploiting nonlinear dynamics for performance enhancement, supported with experimental verifications Applications ranging from moving load excitation of slender bridges to airflow excitation of aeroelastic sections A review of standard nonlinear energy harvesting circuits with modelling aspects.
Author: Madhu Bhaskaran
Publisher: CRC Press
ISBN: 1466587253
Category : Science
Languages : en
Pages : 289
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Book Description
For decades, people have searched for ways to harvest energy from natural sources. Lately, a desire to address the issue of global warming and climate change has popularized solar or photovoltaic technology, while piezoelectric technology is being developed to power handheld devices without batteries, and thermoelectric technology is being explored to convert wasted heat, such as in automobile engine combustion, into electricity. Featuring contributions from international researchers in both academics and industry, Energy Harvesting with Functional Materials and Microsystems explains the growing field of energy harvesting from a materials and device perspective, with resulting technologies capable of enabling low-power implantable sensors or a large-scale electrical grid. In addition to the design, implementation, and components of energy-efficient electronics, the book covers current advances in energy-harvesting materials and technology, including: High-efficiency solar technologies with lower cost than existing silicon-based photovoltaics Novel piezoelectric technologies utilizing mechanical energy from vibrations and pressure The ability to harness thermal energy and temperature profiles with thermoelectric materials Whether you’re a practicing engineer, academician, graduate student, or entrepreneur looking to invest in energy-harvesting devices, this book is your complete guide to fundamental materials and applied microsystems for energy harvesting.
Author: Diana Enescu
Publisher:
ISBN: 1789841992
Category : Social sciences (General)
Languages : en
Pages : 158
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Book Description
This book contributes to understanding the development and application of green energy solutions. The term ""green energy"" is widely used today to indicate sustainable energy sources with zero or minimal environmental and economic impact, obtained from various renewable energy sources. The contents presented in this book deal with different solutions, from small-scale applications (thermoelectric energy harvesting) to energy efficiency in buildings with local renewable energy production (also in critical seismic sites), local energy systems (smart energy management of storage and complex interactions), exploitation of biomasses from agricultural wastes, and voluntary certifications associated with energy trading in large energy systems. These aspects mark a more sustainable evolution of the society with wider green energy usage.
Author: David Michael Rowe
Publisher: CRC Press
ISBN: 1439874727
Category : Technology & Engineering
Languages : en
Pages : 585
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Book Description
Comprising two volumes, Thermoelectrics and Its Energy Harvesting reviews the dramatic improvements in technology and application of thermoelectric energy with a specific intention to reduce and reuse waste heat and improve novel techniques for the efficient acquisition and use of energy. This volume, Modules, Systems and Applications in Thermoelectrics, discusses the practical, novel, and truly groundbreaking applications of thermoelectrics in a range of markets. The book details the U.S. interest in alternative energy and energy harvesting, specifically, the current efforts to use thermoelectric generators (TGs) to reduce emissions. Internationally, it expounds on the strong interest in Japan, Korea and Europe to incorporate TGs in cars to reduce fuel consumption and meet EU carbon dioxide emission targets; the European plans to build an isotopic powered thermoelectric generator; and India’s use of TG s in converting hot water from steel mills into electricity.
Author: Enver Gurhan Kilinc
Publisher: Springer
ISBN: 331921179X
Category : Technology & Engineering
Languages : en
Pages : 152
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Book Description
This book describes new circuits and systems for implantable biomedical applications and explains the design of a batteryless, remotely-powered implantable micro-system, designed for long-term patient monitoring. Following new trends in implantable biomedical applications, the authors demonstrate a system which is capable of efficient, remote powering and reliable data communication. Novel architecture and design methodologies are used to transfer power with a low-power, optimized inductive link and data is transmitted by a reliable communication link. Additionally, an electro-mechanical solution is presented for tracking and monitoring the implantable system, while the patient is mobile.
