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Ho Won Jang

1-1-4 Project Director

  • Affiliation SNU (Materials Science and Engineering)
  • Tel +82-2-880-1720
  • E-mail

    hwjang@snu.ac.kr

  • Homepage

    http://onnl.snu.ac.kr

  • Research TopicChemical sensor array based on two-dimensional nanomaterials
Project : High sensitivity, high reliability, and low power chemical sensor array based on 2D nanomaterials for mobile real-time environmental monitoring
Purpose The goal of this project is the development of high sensitivity, high reliability and low power consumption chemical sensor array based on two-dimensional nanomaterials for real-time environmental monitoring that can be applied to the mobile device. The implementation of the individual graphene-based sensors with surface decoration using various functional groups and metal nanoparticles will result in a 3X3 sensor array that can detect 6 different air pollutants with low power consumption (10 μW). The final goal of the project is developing a 10X10 sensor array based on two-dimensional nanomaterials based on graphene, MoS2, and oxide nanosheets.
Contents Using two-dimensional nanomaterials, a sensor array which can detect ammonia (NH3), surfur oxides (SOx), nitrogen oxides (NOx), carbon monoxide (CO), hygrogen disulfide (H2S), and toluene selectively will be developed.
(1) Technologies for the shape control and surface decoration for two-dimensional nanomaterials
■ Film coating with monolayer 2D nanomaterials
■ Surface decoration with metal nanoparticles and self-assembled monolayers
(2) Technologies for the fabricating high sensitivity, high reliability, and low power consumption two-dimensional nanomaterias-based sensors
■ Sensor design and fabrication
■ Control of baseline resistance and improvement of selectivity and response speed
● Power consumption lower than 10μW
(3) Technologies for fabricating sensor array and processing sensor signals
● Integration of 9 sensors on a single substrate and analyzing the sensor signals for checking and improving selectivity to target gases
Expected Contribution - Through the development of chemical sensor array based on two-dimensional nanomaterials, securing a key patent is easy
- Import substitution effect for the sensor materials that are imported from Japan and Germany (50 billion per year in 2018)
- Improving the price competitiveness and performance of domestic sensors
- Establish a technical foundation to build an ultra-compact air quality monitoring system based on highly sensitive chemical sensor array which can be applied to existing mobile devices
- The world market for environmental sensing and monitoring is expected to reach $ 15.3 billion in 2016
Publication
No Title Year Phase
5 Superhydrophobic and antireflective properties of the hierarchically nanotextured glass surfaces 2015.04. Phase 2
2nd year
4 Superhydrophobic and Antireflective Properties of the Hierarchically Nanotextured Glass Surfaces 2015.04. Phase 2
2nd year
3 Highly sensitive and selective H2 and NO2 gas sensors based on surface-decorated WO3 nanoigloos 2014.07 Phase 2
1st year
2 Superhydrophobic and Antireflective Nanograss-Coated Glass for High Performance Solar Cells 2014.05 Phase 2
1st year
1 Extremely sensitive and selective NO probe based on villi-like WO3 nanostructures for application to exhaled breath analyzers 2013.12 Phase 2
1st year
1
Patent
No Title Country Date Phase
3 불소 원자가 결합된 그래핀 산화물을 포함하는 가스센서 및 이의 제조방법 KR 2014-10-29 Phase 2
2nd year
2 상온에서 구동가능한 가스센서 및 이의 제조방법 KR 2014-07-29 Phase 2
1st year
1 나노입자를 포함하는 가스센서 및 이의 제조방법 KR 2014-07-29 Phase 2
1st year
1
Conference
No title Conference Name Date Phase
 
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