A BUBBLE GAS SENSOR FOR QUNTITATIVE CHEMICAL ANALYSIS

提案1509912标题：用于定量化学分析的气泡气体传感器PI：Kim，Hanseup项目目标简介：该项目旨在研究微尺度流体现象的科学，并开发一种高性能的气体传感器。a)非技术摘要：定量是许多分析应用中最关键的参数之一，特别是在与化学和生物领域接口时，这些领域具有元素的巨大多样性。尽管取得了显著的进展，但由于响应漂移、饱和和有限的特异度等问题，微型气体传感器仍然无法精确测量气体数量。该项目建议开发一种传感机制，通过研究微域中未探索的流体现象和展示微流体传感器来解决这些问题。拟议的研究将提供气体传感和量化的新范式，并将在许多领域产生广泛的社会影响，包括职业安全法规、环境科学、个人和社区行为科学、国土安全、化学制造和健康科学。在这方面，拟议的项目将为高度跨学科的研究和教育提供基础，使学生接触到工程学、科学、医学、社会科学和公共政策之间广泛联系的社会价值观。该计划还将提供与当地博物馆合作接触K-12社区的机会；通过产生面向商业化的知识产权来接触工业；通过课堂发展向本科生和研究生提供在新型传感机制和微流体原理方面的重要进展。B)技术摘要：本项目的目标是(1)通过研究微流控气泡形成的科学，建立一种新型的气体传感原理；(2)制造一种气泡传感器，与现有的气泡传感器相比，气泡传感器的性能提高了两个数量级。具体地说，该项目将通过微加工结构来研究各种气体类型的微流控气/液界面特性。高性能气体传感器的优化原型将被微制造，以演示高精度的气体定量。通过将基础科学研究与实验数据相结合，这项研究有望建立对微流体领域中气泡形成现象与气液界面参数之间关系的基本和全面的理解。这样的理解将使该项目能够进一步展示一种高精度的微型气体传感器设备，该设备能够以出色的动态范围、分辨率和线性来量化气体量。

Proposal 1509912Title: A bubble gas sensor for quantitative chemical analysisPI: Kim, HanseupBrief description of project goals: This project aims to investigate the science of micro-scale fluidic phenomena and develop a high-performance gas sensor.a) Nontechnical Abstract:Quantification is one of the most critical parameters in many analytical applications, especially when interfacing with the chemical and biological domains, which feature enormous diversity in elements. Despite remarkable progress, miniature gas sensors still remain incapable of measuring gas quantity precisely because of issues in response drift, saturation, and limited specificity. This project proposes the development of a sensing mechanism that addresses such issues by investigating unexplored fluidic phenomena in the micro-domain and by demonstrating a microfluidic sensor. The proposed research will provide a new paradigm in gas sensing and quantification and will have a broad range of societal impacts in numerous fields, including occupational safety regulation, environmental sciences, personal and community behavioral sciences, homeland security, chemical manufacturing, and health science. In this context, the proposed project will provide a foundation for highly inter-disciplinary research and education, where students are exposed to broadly connected societal values among engineering, science, medicine, social sciences, and public policy. This program will also provide an opportunity to reach out to the K-12 community in collaboration with a local museum; to industry via intellectual property generation directed toward commercialization; and to the undergraduate and graduate students via class development on important advances in novel sensing mechanisms and microfluidics principles. b) Technical Abstract: This project aims (1) to establish a novel class of a gas sensing principle by investigating the science of microfluidic bubble formation and (2) to fabricate a bubble-based sensor which improves gas sensing performance by two orders of magnitude in comparison to existing counterparts. Specifically, this project will investigate the microfluidic gas/liquid interface properties of various gas types via microfabricated structures. An optimized prototype of a high performance gas sensor will be microfabricated to demonstrate high-precision gas quantification. By combining the fundamental science studies with experimental data, the proposed research is expected to establish fundamental and comprehensive understanding on bubble formation phenomena in the microfluidic domain, in relation to gas-liquid interfacial parameters. Such an understanding will enable this program to further demonstrate a high-precision micro gas sensor device that is capable of quantifying gas amounts with outstanding dynamic range, resolution, and linearity.