東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Integrated Microsystem Technologies ...

Yin, Heyu.

Linked to FindBook

Google Book

Amazon

博客來

Integrated Microsystem Technologies for Continuous Personal Monitoring of Airborne Pollutant Exposures.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Integrated Microsystem Technologies for Continuous Personal Monitoring of Airborne Pollutant Exposures./
Author:	Yin, Heyu.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2021,
Description:	185 p.
Notes:	Source: Dissertations Abstracts International, Volume: 82-09, Section: B.
Contained By:	Dissertations Abstracts International82-09B.
Subject:	Electrical engineering. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28263740
ISBN:	9798582515944

Integrated Microsystem Technologies for Continuous Personal Monitoring of Airborne Pollutant Exposures.
Yin, Heyu.

Integrated Microsystem Technologies for Continuous Personal Monitoring of Airborne Pollutant Exposures. - Ann Arbor : ProQuest Dissertations & Theses, 2021 - 185 p.

Source: Dissertations Abstracts International, Volume: 82-09, Section: B.

Thesis (Ph.D.)--Michigan State University, 2021.

This item must not be sold to any third party vendors.

Exposure to airborne pollutants, including gaseous toxins and particulate matter (PM), threaten human health and are of growing world concern. Unfortunately, the specific mechanisms behind medical conditions induced by air pollutants, as well as the socioeconomic demographics that underpin these conditions, are poorly understood. This is due, in large part, to a lack of accurate data detailing exposure profiles of individuals who suffer from acute and chronic health conditions. Air pollution levels and the activities of individuals exhibit a large degree of spatial and temporal variation, which both challenge the assessment of personal exposures. Moreover, health impacts vary significantly with chemical composition and particle size of pollutants, which further complicates effective monitoring. Utilizing a combination of microfabrication, microfluidics and electrochemical sensing technologies, this thesis research explored a microsystem solution to these challenges that can achieve high spatial resolution by providing a compact, mobile/wearable monitoring device and can achieve high temporal resolution by enabling continuous collection of personal exposure data. To create a compact monitor for multiple gaseous air pollutants, unique microfabrication procedures and electrochemical techniques were established, enabling a gas sensor array that features room temperature ionic liquid electrolyte and achieves high reliability and repeatability. In addition, a novel PM monitoring platform that uniquely employs microfluidics to achieve real-time continuous measurement was introduced, and key component technologies were developed. First, to measure PM concentrations within a compact microfluidic device, an electrochemical quantification method based on the ionic electret effect was employed for the first time using microfabricated planar electrodes and a microelectronic instrumentation module. Second, to permit real-time analysis of PM across a wide range of particle diameters, multiple generations of a microfluidic size fractionation component were developed. The first microfabricated size fractionation device realized the deterministic lateral displacement (DLD) method with a critical diameter of 2.5 µm and was successfully demonstrated to separate 10 µm and 1 µm particles with around 100% efficiency. The next size fractionation design aimed to provide multi-size separation over a wide dynamic range (~1000) of particle sizes that impact human health, down to ultrafine (nanoscale) PM. The resulting externally balanced cascade DLD concept was implemented within a mathematic model that predicts size fractionation of PM, from 10 µm to 0.01 µm, can be achieved with a minimum total device length of ~41mm using a four-section cascade. Finally, to further miniaturize the size separation device toward a monolithic implementation, an internally balanced cascade DLD design concept that can omit extra inputs and outputs was introduced and thoroughly analyzed using computational fluid dynamics simulations. The combined results of this research overcome many challenges that currently impede the desperately needed realization of personal airborne pollutant monitors offering wearable, real-time and continuous operation for unprecedented spatial and temporal resolution.

ISBN: 9798582515944Subjects--Topical Terms:

649834
Electrical engineering.
Subjects--Index Terms:

Integrated microsystem

Integrated Microsystem Technologies for Continuous Personal Monitoring of Airborne Pollutant Exposures.
LDR:04470nmm a2200349 4500 001 2283574
005 20211115071501.5
008 220723s2021 ||||||||||||||||| ||eng d
020 $a 9798582515944
035 $a (MiAaPQ)AAI28263740
035 $a AAI28263740
040 $a MiAaPQ $c MiAaPQ
100 1 $a Yin, Heyu. $0 (orcid)0000-0002-6336-7972 $3 3562557
245 1 0 $a Integrated Microsystem Technologies for Continuous Personal Monitoring of Airborne Pollutant Exposures.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2021
300 $a 185 p.
500 $a Source: Dissertations Abstracts International, Volume: 82-09, Section: B.
500 $a Advisor: Mason, Andrew J.
502 $a Thesis (Ph.D.)--Michigan State University, 2021.
506 $a This item must not be sold to any third party vendors.
520 $a Exposure to airborne pollutants, including gaseous toxins and particulate matter (PM), threaten human health and are of growing world concern. Unfortunately, the specific mechanisms behind medical conditions induced by air pollutants, as well as the socioeconomic demographics that underpin these conditions, are poorly understood. This is due, in large part, to a lack of accurate data detailing exposure profiles of individuals who suffer from acute and chronic health conditions. Air pollution levels and the activities of individuals exhibit a large degree of spatial and temporal variation, which both challenge the assessment of personal exposures. Moreover, health impacts vary significantly with chemical composition and particle size of pollutants, which further complicates effective monitoring. Utilizing a combination of microfabrication, microfluidics and electrochemical sensing technologies, this thesis research explored a microsystem solution to these challenges that can achieve high spatial resolution by providing a compact, mobile/wearable monitoring device and can achieve high temporal resolution by enabling continuous collection of personal exposure data. To create a compact monitor for multiple gaseous air pollutants, unique microfabrication procedures and electrochemical techniques were established, enabling a gas sensor array that features room temperature ionic liquid electrolyte and achieves high reliability and repeatability. In addition, a novel PM monitoring platform that uniquely employs microfluidics to achieve real-time continuous measurement was introduced, and key component technologies were developed. First, to measure PM concentrations within a compact microfluidic device, an electrochemical quantification method based on the ionic electret effect was employed for the first time using microfabricated planar electrodes and a microelectronic instrumentation module. Second, to permit real-time analysis of PM across a wide range of particle diameters, multiple generations of a microfluidic size fractionation component were developed. The first microfabricated size fractionation device realized the deterministic lateral displacement (DLD) method with a critical diameter of 2.5 µm and was successfully demonstrated to separate 10 µm and 1 µm particles with around 100% efficiency. The next size fractionation design aimed to provide multi-size separation over a wide dynamic range (~1000) of particle sizes that impact human health, down to ultrafine (nanoscale) PM. The resulting externally balanced cascade DLD concept was implemented within a mathematic model that predicts size fractionation of PM, from 10 µm to 0.01 µm, can be achieved with a minimum total device length of ~41mm using a four-section cascade. Finally, to further miniaturize the size separation device toward a monolithic implementation, an internally balanced cascade DLD design concept that can omit extra inputs and outputs was introduced and thoroughly analyzed using computational fluid dynamics simulations. The combined results of this research overcome many challenges that currently impede the desperately needed realization of personal airborne pollutant monitors offering wearable, real-time and continuous operation for unprecedented spatial and temporal resolution.
590 $a School code: 0128.
650 4 $a Electrical engineering. $3 649834
650 4 $a Atmospheric chemistry. $3 544140
650 4 $a Environmental engineering. $3 548583
653 $a Integrated microsystem
653 $a Continuous personal monitoring
653 $a Airborne pollutant exposure
690 $a 0544
690 $a 0775
690 $a 0371
710 2 $a Michigan State University. $b Electrical Engineering - Doctor of Philosophy. $3 2094234
773 0 $t Dissertations Abstracts International $g 82-09B.
790 $a 0128
791 $a Ph.D.
792 $a 2021
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28263740