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MEMS Scale CMOS Compatible Energy Harvesters Using Piezoelectric Polymers for Sustainable Electronics.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	MEMS Scale CMOS Compatible Energy Harvesters Using Piezoelectric Polymers for Sustainable Electronics./
Author:	Toprak, Alperen.
Description:	1 online resource (159 pages)
Notes:	Source: Dissertation Abstracts International, Volume: 79-02(E), Section: B.
Subject:	Electrical engineering. -
Online resource:	click for full text (PQDT)
ISBN:	9780355241761

MEMS Scale CMOS Compatible Energy Harvesters Using Piezoelectric Polymers for Sustainable Electronics.
Toprak, Alperen.

MEMS Scale CMOS Compatible Energy Harvesters Using Piezoelectric Polymers for Sustainable Electronics. - 1 online resource (159 pages)

Source: Dissertation Abstracts International, Volume: 79-02(E), Section: B.

Thesis (Ph.D.)--University of Miami, 2017.

Includes bibliographical references

The field of microelectronics had a remarkable progress since its beginnings in 1960s, which led to the advent of myriad new electronic devices that found widespread usage in daily life. Continuous advances in CMOS and MEMS technologies reduced the cost, size, weight, and power requirements of these devices, enabling the realization of distributed systems such as wireless sensor networks. However, due to much slower pace of innovation, currently available battery technologies continue to dictate the size, weight and cost of these systems. There are further concerns brought by the batteries regarding the environmental effects or feasibility of dead battery replacement in distributed or embedded systems. As a result of this problem, there has been a growing research impetus on energy harvesting technologies, which are expected to alleviate the problems brought by the fixed capacity energy sources in electronic devices.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9780355241761Subjects--Topical Terms:

596380
Electrical engineering.
Index Terms--Genre/Form:

554714
Electronic books.

MEMS Scale CMOS Compatible Energy Harvesters Using Piezoelectric Polymers for Sustainable Electronics.
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500 $a Source: Dissertation Abstracts International, Volume: 79-02(E), Section: B.
500 $a Adviser: Onur Tigli.
502 $a Thesis (Ph.D.)--University of Miami, 2017.
504 $a Includes bibliographical references
520 $a The field of microelectronics had a remarkable progress since its beginnings in 1960s, which led to the advent of myriad new electronic devices that found widespread usage in daily life. Continuous advances in CMOS and MEMS technologies reduced the cost, size, weight, and power requirements of these devices, enabling the realization of distributed systems such as wireless sensor networks. However, due to much slower pace of innovation, currently available battery technologies continue to dictate the size, weight and cost of these systems. There are further concerns brought by the batteries regarding the environmental effects or feasibility of dead battery replacement in distributed or embedded systems. As a result of this problem, there has been a growing research impetus on energy harvesting technologies, which are expected to alleviate the problems brought by the fixed capacity energy sources in electronic devices.
520 $a This dissertation proposes a new class of MEMS-scale piezoelectric energy harvesters that have the potential to be monolithically integrated with CMOS circuits. Proposed devices will utilize polyvinylidene fluoride-trifluoroethylene (PVDF-TrFE), a piezoelectric polymer with an impressive electromechanical coupling factor of 0.3. Its energy harvesting potential was evaluated using theoretical analyses and finite element method (FEM) simulations and compared with other CMOS compatible piezoelectric materials. Various architectural options for the mechanical and electrical structure of the energy harvester were examined and most promising options were determined.
520 $a The process for the fabrication of PVDF-TrFE thin films was optimized to yield high quality films with strong ferroelectric and piezoelectric properties. A comprehensive characterization study was performed to measure the dielectric, ferroelectric, and piezoelectric properties of the fabricated films. Cantilever type MEMS scale piezoelectric energy harvesters (PEH) were fabricated and characterized. Maximum power output density on purely resistive loads in response to a 1.0 g input acceleration was measured as 27.8 nW/mm2 from a (1800 microm x 2000 microm) device at its resonance frequency of 192.5 Hz. A power conditioning circuit, based on synchronous switching on inductor technique, was also designed and integrated with the fabricated prototypes. The circuit, which draws 250 nW power from +/-1 V dual supplies at 200 Hz, improved the DC power output of the PEHs by 165%. Using the same (1800 microm x 2000 microm) prototype in combination with the circuit, a maximum power of 140 nW was transferred to a DC load under 1.0 g acceleration.
520 $a The results obtained throughout the course of this dissertation work proved that PVDF-TrFE can be used in MEMS scale energy harvesting devices. CMOS compatible fabrication process of the polymer makes it possible to integrate these energy harvesters with CMOS circuits on the same substrate. This monolithic integration approach would improve the unit cost, size, and reliability compared to integration at higher levels and therefore, can find use in applications such as wireless sensors networks, structure health monitoring systems, and wide area surveillance applications.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Electrical engineering. $3 596380
655 7 $a Electronic books. $2 local $3 554714
690 $a 0544
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a University of Miami. $b Electrical and Computer Engineering. $3 1187022
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10620061 $z click for full text (PQDT)