Subject

Subjects : gas sensor

  • Articles (103)
  • Patents (13)
  • R&D Reports (2)
논문 검색결과
Type Year Title Cited Download
Journal 2025 Multigas Identification by Temperature-Modulated Operation of a Single Anodic Aluminum Oxide Gas Sensor Platform and Deep Learning Algorithm   Lee Byeongju  ACS SENSORS, v.10, no.2, pp.954-964 1 원문
Journal 2024 Breath analysis system with convolutional neural network (CNN) for early detection of lung cancer   Junyeong Lee  Sensors and Actuators, B: Chemical, v.409, pp.1-10 31 원문
Journal 2024 Breath analysis system with convolutional neural network (CNN) for early detection of lung cancer   Lee Byeongju  Sensors and Actuators, B: Chemical, v.409, pp.1-10 31 원문
Conference 2024 Multi-modal Solid-state Gas Sensors-based Breath Analysis System with Convolutional Neural Network (CNN) for Early Detection of Lung Cancer   Dae-Sik Lee  The Electrochemical Society (ECS) Meeting 2024, pp.1-2
Conference 2023 Deep Nose project: A Study of Multidimensional Multimodal Olfactory Intelligence System for Ultra-Trace Gas Component Detection   Jang Yongwon  IEEE Sensors 2023, pp.1-4 0 원문
Journal 2023 A selective feature optimized multi-sensor based e-nose system detecting illegal drugs validated in diverse laboratory conditions   Noh Hyung Wook  Sensors and Actuators, B: Chemical, v.390, pp.1-10 13 원문
Journal 2023 Highly Dispersed Pt-Incorporated Mesoporous Fe2O3 for Low-Level Sensing of Formaldehyde Gas   오경희  Nanomaterials, v.13, no.4, pp.1-13 7 원문
Journal 2023 Highly Dispersed Pt-Incorporated Mesoporous Fe2O3 for Low-Level Sensing of Formaldehyde Gas   Seung Jin Jeon  Nanomaterials, v.13, no.4, pp.1-13 7 원문
Journal 2023 Breath Gas Sensors for Diabetes and Lung Cancer Diagnosis   Lee Byeongju  센서학회지, v.32, no.1, pp.1-9 2 원문
Journal 2021 A highly Smart MEMS Acetone Gas Sensors in Array for Diet-monitoring Applications   Lee Jae Eun  Micro and Nano Systems Letters, v.9, pp.1-6 9 원문
Journal 2021 Ultrafast Room Temperature Synthesis of Porous Polythiophene via Atmospheric Pressure Plasma Polymerization Technique and Its Application to NO2 Gas Sensors   박춘상  Polymers, v.13, no.11, pp.1-12 24 원문
Journal 2021 Ultrafast Room Temperature Synthesis of Porous Polythiophene via Atmospheric Pressure Plasma Polymerization Technique and Its Application to NO2 Gas Sensors   Kim Doyeob  Polymers, v.13, no.11, pp.1-12 24 원문
Journal 2020 ZnO–CuO Core-Hollow Cube Nanostructures for Highly Sensitive Acetone Gas Sensors at the ppb Level   Lee Jae Eun  ACS Applied Materials & Interfaces, v.12, no.31, pp.35688-35697 164 원문
Journal 2020 ZnO–CuO Core-Hollow Cube Nanostructures for Highly Sensitive Acetone Gas Sensors at the ppb Level   임찬규  ACS Applied Materials & Interfaces, v.12, no.31, pp.35688-35697 164 원문
Journal 2020 Phase Transition of Non-equilibrium Wurtzite CoO: Spontaneous Deposition of Sensing Material for Ultrasensitive Detection of Acetone   Park Hyung Ju  Sensors and Actuators B : Chemical, v.308, pp.1-7 17 원문
Journal 2020 Phase Transition of Non-equilibrium Wurtzite CoO: Spontaneous Deposition of Sensing Material for Ultrasensitive Detection of Acetone   마아현  Sensors and Actuators B : Chemical, v.308, pp.1-7 17 원문
Journal 2020 Commercial Silk-based Electronic Textiles for NO2 Sensing   정원택  Sensors and Actuators B : Chemical, v.307, pp.1-7 26 원문
Journal 2020 Synthesis and Gas Sensing Properties of WS2 Nanocrystallites Assembled Hierarchical WS2 Fibers by Electrospinning   Youn Doo Hyeb  Nanotechnology, v.31, no.10, pp.1-12 24 원문
Journal 2019 A Highly Susceptive Mesoporous Hematite Microcube Architecture for Sustainable P-type Formaldehyde Gas Sensors   Park Hyung Ju  Sensors and Actuators B : Chemical, v.287, pp.437-444 39 원문
Conference 2019 다공성 헤마타이트 마이크로큐브의 손쉬운 합성법과 그것을 이용한 지속가능한 P형 포름알데하이드 가스 센서   Park Hyung Ju  한국 MEMS 학술 대회 2019, pp.1-1
Conference 2018 The Miniaturized IoT Electronic Nose Device and Sensor Data Collection System for Health Screening by Volatile Organic Compounds Detection from Exhaled Breath   Choi Jong-Woo  International Symposium on Information and Communication Technology (SoICT) 2018, pp.405-409 1 원문
Conference 2018 P2NG.17 - Sonochemical Synthesis of HKUST-1 Based CuO Decorated with Pt Nanoparticles for Formaldehyde Gas Sensors   Lee Jae Eun  International Meeting on Chemical Sensors (IMCS) 2018, pp.876-877 원문
Conference 2018 P2NG.16 - Spontaneous Deposition of Cobalt Oxide Nanoplates for Application to Acetone Gas Sensors   Ma A Hyeon  International Meeting on Chemical Sensors (IMCS) 2018, pp.874-875 원문
Conference 2018 P1NM.11 - Conductive Porous Polymer Synthesis via a Novel Atmospheric Pressure Plasma Polymerization and Its Application to Gas Sensors   박춘상  International Meeting on Chemical Sensors (IMCS) 2018, pp.599-600 원문
Conference 2018 P2GS.13 - Fabrication of ZnO-Based Ethanol Gas Sensors Using Aerosol-Assisted Atmospheric Pressure Plasma   Kim Doyeob  International Meeting on Chemical Sensors (IMCS) 2018, pp.792-793 원문
Journal 2018 Highly Flexible, Mechanically Stable, and Sensitive NO2 Gas Sensors based on Reduced Graphene Oxide Nanofibrous Mesh Fabric for Flexible Electronics   Park Hyung Ju  Sensors and Actuators B : Chemical, v.257, pp.846-852 87 원문
Journal 2018 Synthesis of Hollow Iron Oxide Nanospheres and Their Application to Gas Sensors   Park Hyung Ju  Journal of Nanoscience and Nanotechnology, v.18, no.2, pp.1356-1360 4 원문
Journal 2018 Synthesis of Hollow Iron Oxide Nanospheres and Their Application to Gas Sensors   오경희  Journal of Nanoscience and Nanotechnology, v.18, no.2, pp.1356-1360 4 원문
Journal 2018 Analysis of Volatile Organic Compounds in Exhaled Breath for Lung Cancer Diagnosis using a Sensor System   장지은  Sensors and Actuators B : Chemical, v.255, no.Part. 1, pp.800-807 141 원문
Journal 2018 Analysis of Volatile Organic Compounds in Exhaled Breath for Lung Cancer Diagnosis using a Sensor System   Dae-Sik Lee  Sensors and Actuators B : Chemical, v.255, no.Part. 1, pp.800-807 141 원문
Journal 2018 Highly Stretchable, Mechanically Stable, and Weavable Reduced Graphene Oxide Yarn with High NO2 Sensitivity for Wearable Gas Sensors   윤용주  RSC Advances, v.8, no.14, pp.7615-7621 32 원문
Journal 2017 Low Power Consumption Solid Electrochemical-Type Micro CO2 Gas Sensor   Jaewoo Lee  Sensors and Actuators B : Chemical, v.248, pp.957-960 34 원문
Journal 2017 E-textile Gas Sensors Composed of Molybdenum Disulfide and Reduced Graphene Oxide for High Response and Reliability   Yun Yong Ju  Sensors and Actuators B : Chemical, v.248, pp.829-835 66 원문
Journal 2017 A Carbon Dioxide Gas Sensor based on Cobalt Oxide Containing Barium Carbonate   Kim Doyeob  Sensors and Actuators B : Chemical, v.248, pp.987-992 51 원문
Conference 2017 Gas Sensor on Stretchable Yarn Coated with Reduced Graphene Oxide for High Response to NO2   Lee Hyung-Kun  International Symposium on Flexible Organic Electronics (ISFOE) 2017, pp.132-132
Journal 2017 MEMS-Based NO2 Gas Sensor Using ZnO Nano-Rods for Low-Power IoT Application   Jaewoo Lee  Journal of the Korean Physical Society, v.70, no.10, pp.924-928 18 원문
Journal 2016 Conductive Polymer Synthesis with Single-Crystallinity via a Novel Plasma Polymerization Technique for Gas Sensor Applications   박춘상  Materials, v.9, no.10, pp.1-11 45 원문
Conference 2016 E-textile Gas Sensor Composed of Transition Metal Disulfides and Reduced Graphene Oxides   Yun Yong Ju  International Meeting on Chemical Sensors (IMCS) 2016, pp.1-2
Conference 2015 Gas Sensor Using Reduced Graphene Oxide on 3D Substrates   Lee Hyung-Kun  한국탄소학회 학술 대회 (추계) 2015, pp.55-55
Journal 2015 Low Power Consumption Micro C2H5OH Gas Sensor Based on Micro-Heater and Ink Jetting Technique   Moon Seungeon  Sensors and Actuators B : Chemical, v.217, pp.146-150 29 원문
Journal 2015 Ultrasensitive and Highly Selective Graphene-Based Single Yarn for Use in Wearable Gas Sensor   윤용주  Scientific Reports, v.5, pp.1-7 174 원문
Journal 2014 A PPB-Level Formaldehyde Gas Sensor Based on CuO Nanocubes Prepared Using a Polyol Process   Park Hyung Ju  Sensors and Actuators B : Chemical, v.203, pp.282-288 125 원문
Journal 2014 A Hollow Assembly and Its Three-Dimensional Network Formation of Single-Crystalline Co3O4 Nanoparticles for Ultrasensitive Formaldehyde Gas Sensors   김재영  The Journal of Physical Chemistry C, v.118, no.45, pp.25994-26002 63 원문
Journal 2014 A Hollow Assembly and Its Three-Dimensional Network Formation of Single-Crystalline Co3O4 Nanoparticles for Ultrasensitive Formaldehyde Gas Sensors   Choi Nak Jin  The Journal of Physical Chemistry C, v.118, no.45, pp.25994-26002 63 원문
Journal 2014 Flexible and Transparent Gas Molecule Sensor Integrated with Sensing and Heating Graphene Layers   Choi Jin Sik  Small, v.10, no.18, pp.3685-3691 166 원문
Journal 2014 Flexible and Transparent Gas Molecule Sensor Integrated with Sensing and Heating Graphene Layers   Hongkyw Choi  Small, v.10, no.18, pp.3685-3691 166 원문
Journal 2014 Ultrafast Response Sensor to Formaldehyde Gas Based on Metal Oxide   Choi Nak Jin  Journal of Nanoscience and Nanotechnology, v.14, no.8, pp.5807-5810 13 원문
Journal 2014 A 3D Scaffold for Ultra-sensitive Reduced Graphene Oxide Gas Sensors   Yun Yong Ju  Nanoscale, v.6, no.12, pp.6511-6514 74 원문
Journal 2014 Reduction Algorithm for Gas Measurement Time in Wireless Sensor Network Applications with Limited Power   Choi Nak Jin  Sensor Letters, v.12, no.6-7, pp.1093-1095 0 원문
Journal 2014 CuO Nanocube Gas Sensor for Ethanol Detection   Park Hyung Ju  Sensor Letters, v.12, no.6-7, pp.1156-1159 9 원문
Journal 2013 Stacked-Type Potentiometric Solid-State CO2 Gas Sensor   Choi Nak Jin  Sensors and Actuators B : Chemical, v.187, pp.340-346 20 원문
Journal 2013 Low Power Consumption Micro C2H5OH Gas Sensor Based on Micro-Heater and Screen Printing Technique   Moon Seungeon  Sensors and Actuators B : Chemical, v.187, pp.598-603 25 원문
Conference 2013 Low Power Consumption Micro C2H5OH Gas Sensor based on Micro-heater and Ink Jetting Technique   Moon Seungeon  International Conference on Surfaces, Coatings and Nanostructured Materials (NanoSMat) 2013, pp.68-68
Journal 2013 Semiconductor-Type MEMS Gas Sensor for Real-Time Environmental Monitoring Applications   Moon Seungeon  ETRI Journal, v.35, no.4, pp.617-624 54 원문
Journal 2013 Use of Gas-Sensor Array Technology in Lung Cancer Diagnosis   Kim Young Jun  센서학회지, v.22, no.4, pp.249-255 원문
Conference 2013 Stable and Sensitive Gas Sensor based on Monodisperse Cu2O Nanocubes     International Symposium on Olfaction and Electronic Nose (ISOEN) 2013, pp.1-1
Journal 2013 A Physicochemical Mechanism of Chemical Gas Sensors Using an AC Analysis   Jaehyun Moon  Physical Chemistry Chemical Physics, v.15, no.23, pp.9361-9374 24 원문
Conference 2013 Gas Sensor Array for Indoor Enviroment     European Materials Research Society (E-MRS) Meeting 2013 (Spring), pp.1-1
Conference 2013 Gas Sensor through Wrapping Electro-spun Nanofibers with Reduced Graphene Oxide     European Materials Research Society (E-MRS) Meeting 2013 (Spring), pp.1-1
Journal 2012 Fast Response Formaldehyde Gas Sensor for USN Application   Choi Nak Jin  Sensors and Actuators B : Chemical, v.175, pp.132-136 23 원문
Journal 2012 A solid electrolyte potentiometric CO2 gas sensor composed of lithium phosphate as both the reference and the solid electrolyte materials   Lee Hyung-Kun  Journal of the Korean Physical Society, v.61, no.6, pp.938-941 12 원문
Journal 2012 Encapsulation of Semiconductor Gas Sensors with Gas Barrier Films for USN Application   Lee Hyung-Kun  ETRI Journal, v.34, no.5, pp.713-718 19 원문
Journal 2012 Low-Power-Consumption Metal Oxide NO2 Gas Sensor based on Micro-Heater and Screen Printing Technology   Moon Seungeon  Journal of Nanoscience and Nanotechnology, v.12, no.7, pp.5543-5546 9 원문
Conference 2012 5.5.2 Response/Recovery Behaviors of Solid Electrolyte CO2 Gas Sensors Depending on Reference Materials   Lee Hyung-Kun  International Meeting on Chemical Sensors (IMCS) 2012, pp.493-496 원문
Conference 2012 Stacked Type Potentiometric Solid-State CO2 Gas Sensor for Miniaturization   Choi Nak Jin  International Meeting on Chemical Sensors (IMCS) 2012, pp.507-510
Journal 2012 High-Response and Low-Power-Consumption CO Micro Gas Sensor Based on Nano-Powders and a Micro-Heater   Moon Seungeon  Journal of the Korean Physical Society, v.60, no.2, pp.235-239 5 원문
Journal 2012 Fabrication of a HCHO gas sensor based on a MEMS heater and inkjet printing   Lee Hyung-Kun  Journal of the Korean Physical Society, v.60, no.2, pp.225-229 10 원문
Conference 2011 Efficient Reducing Method of Graphene Oxide for Gas Sensor Applications   Lee Hyung-Kun  Eurosensors 2011, pp.892-895 12 원문
Conference 2011 Fast Response Formaldehyde Gas Sensor for USN Application   Choi Nak Jin  Eurosensors 2011, pp.1073-1076 2 원문
Journal 2011 Highly Sensitive Hydrogen Detection of Catalyst-Free ZnO Nanorod Networks Suspended by Lithography-Assisted Growth   허정환  Nanotechnology, v.22, no.5, pp.1-7 39 원문
Journal 2010 Flexible Room-Temperature NO2 Gas Sensors Based on Carbon Nanotubes/Reduced Graphene Hybrid Films   Hu Young Jeong  Applied Physics Letters, v.96, no.21, pp.1-3 272 원문
Journal 2010 Two-dimensional ZnO–NiO macroporous arrays: Fabrication, structure and electrical properties   Jaehyun Moon  Electrochimica Acta, v.55, no.22, pp.6849-6856 8 원문
Journal 2010 Pd-Doped TiO2 Nanofiber Networks for Gas Sensor Applications   Jaehyun Moon  Sensors and Actuators B : Chemical, v.149, no.1, pp.301-305 195 원문
Journal 2010 Gas Sensitivity Modulation of Oxide Thin Films by Means of an Electrical Method   Jaehyun Moon  Sensors and Actuators B : Chemical, v.148, no.2, pp.539-543 2 원문
Journal 2010 High Sensitive NO2 Gas Sensor with Low Power Consumption Using Selectively Grown ZnO Nanorods   Park So Jeong  Journal of Nanoscience and Nanotechnology, v.10, no.5, pp.3385-3388 13 원문
Journal 2010 Low Power Consumption and High Sensitivity Carbon Monoxide Gas Sensor Using Indium Oxide Nanowire   Moon Seungeon  Journal of Nanoscience and Nanotechnology, v.10, no.5, pp.3189-3192 16 원문
Journal 2010 Low Power Consumption and High Sensitive NO2 Micro Gas Sensor based on Co-planar Micro-heater fabricated by using CMOS-MEMS Process   Moon Seungeon  Journal of the Korean Physical Society, v.56, no.1, pp.434-438 12 원문
Journal 2009 Semiconducting ZnO Nanofibers as Gas Sensors and Gas Response Improvement by SnO2 Coating   Jaehyun Moon  ETRI Journal, v.31, no.6, pp.636-641 26 원문
Journal 2009 Structure and electrical properties of electrospun ZnO–NiO mixed oxide nanofibers   Jaehyun Moon  Current Applied Physics, v.9, no.3, pp.S213-S216 31 원문
Journal 2009 Fabrication and NO2 Sensing Characteristics of an In2O3 Nanowire Gas Sensor   Moon Seungeon  Journal of the Korean Physical Society, v.54, no.2, pp.830-834
Journal 2008 Micro-machined Resistive Micro-heaters for High Temperature Gas Sensing Applications   Lee Hongyeol  Electronics Letters, v.44, no.25, pp.1-2 6 원문
Conference 2008 Design and Fabrication of Micro-machined Micro Heaters for Metal Oxide Based Gas Sensors   Lee Hongyeol  International Conference on Nano Science and Nano Technology (GJ-NST) 2008, pp.1-1
Conference 2008 High Sensitive NO2 Gas Sensor with Low Power Consumption using Selectively Grown ZnO Nanorods   Park So Jeong  International Conference on Nano Science and Nano Technology (GJ-NST) 2008, pp.1-1
Conference 2008 Low Power Consumption and High Sensitivity Carbon Monoxide Gas Sensor using Indium Oxide Nanowire   Moon Seungeon  International Conference on Nano Science and Nano Technology (GJ-NST) 2008, pp.1-1
Journal 2008 SOI CMOS-Based Smart Gas Sensor System for Ubiquitous Sensor Networks   Maeng Sunglyul  ETRI Journal, v.30, no.4, pp.516-525 29 원문
Journal 2008 Electrical Characterization of ZnO Single Nanowire Device for Chemical Sensor Application   Kim Eunkyoung  Journal of Nanoscience and Nanotechnology, v.8, no.9, pp.4698-4701 8 원문
Journal 2008 Highly Sensitive NO2 Sensor Array based on Undecorated Single-walled Carbon Nanotube Monolayer Junctions   맹성렬  Applied Physics Letters, v.93, no.11, pp.1-3 19 원문
Journal 2008 Photonic-Crystal-Type Infrared Filters for Gas Sensors   Oh Sang Soon  Journal of the Korean Physical Society, v.53, no.3, pp.1671-1674
Journal 2008 The Highly Sensitive NO2 Gas Sensor Using ZnO Nanorods Grown by the Sol-gel Method   Park So Jeong  센서학회지, v.17, no.2, pp.147-150 원문
Conference 2008 High Sensitivity and Low Power Consumption CO Gas Sensor based on In2O3 Nanowire   Kwak Junhyuk  한국 반도체 학술 대회 (KCS) 2008, pp.1-3
Conference 2008 Fabrication and NO2 Sensing Characteristics of Molecular Linker-free Assembly of Semiconducting SWNTs Device   Park So Jeong  한국 반도체 학술 대회 (KCS) 2008, pp.1-2
Journal 2007 Fabrication and Atmospheric-Pressure-Dependent Electrical Properties of a ZnO Nanowire Device   Kim Eunkyoung  Journal of the Korean Physical Society, v.51, pp.S170-S173 15
Journal 2007 Gas Sensor Measurement System Capable of Sampling Volatile Organic Compounds (VOCs) in Wide Concentration Range   Yong Shin Kim  Sensors and Actuators B : Chemical, v.122, no.1, pp.211-218 62 원문
Journal 2007 Si 몸체가공으로 제작된 단일 센서어레이를 사용한 이동형 전자후각 시스템   Yoon Seok Yang  Sensors and Materials, v.17, no.2, pp.77-85
Conference 2006 An Amperometric CO Gas Sensor based on Solid Polymer Electrolyte   Moon Seungeon  MRS Meeting 2006 (Fall), pp.1-1
Conference 2006 Response Properties of the Gold Nanoparticle Sensors toward Benzene and Toluene Vapors   Kim Young Jun  IEEE Sensors 2006, pp.1078-1080 1 원문
Conference 2006 Atmosphere Pressure Dependent Electrical Properties of the ZnO Nanowire Transistors   Kim Eunkyoung  Nanotechnology Materials and Devices Conference (NMDC) 2006, pp.1-2
Conference 2006 Detecting a Breath Biomarker, CH3COOH by Nanoparticle Gas Sensor   Kim Young Jun  World Congress on Medical Physics and Biomedical Engineering (WC) 2006, pp.1-1
Journal 2006 Microheater-Integrated Single Gas Sensor Array Chip Fabricated on Flexible Polyimide Substrate   Yong Shin Kim  Sensors and Actuators B : Chemical, v.114, no.1, pp.410-417 56 원문
Conference 2005 An Electrospun Carbon Black-Polymer Fiber-based Gas Sensor   Yong Shin Kim  MRS Meeting 2005 (Fall), pp.1-1
Journal 2005 Environmental temperature-independent gas sensor array based on polymer composite   Seung Chul Ha  Sensors and Actuators B : Chemical, v.108, no.1-2, pp.258-264 15 원문
Journal 2005 Portable electronic nose system based on the carbon black–polymer composite sensor array   Yong Shin Kim  Sensors and Actuators B : Chemical, v.108, no.1-2, pp.285-291 101 원문
Journal 2005 Room-temperature semiconductor gas sensor based on nonstoichiometric tungsten oxide nanorod film   Yong Shin Kim  Applied Physics Letters, v.86, no.21, pp.1-3 258 원문
특허 검색결과
Status Year Patent Name Country Family Pat. KIPRIS
Registered 2017 가스 센서 및 그 제조 방법 KOREA
Registered 2011 가스 센서, 그의 제조 및 사용 방법 KOREA KIPRIS
Registered 2018 가스센서의 제조 방법 KOREA KIPRIS
Registered 2012 GAS SENSOR AND METHOD OF MANUFACTURING THE SAME UNITED STATES
Registered 2020 기체 센서의 이상 감지 장치 및 방법 KOREA KIPRIS
Registered 2012 MICROELECTROMECHANICAL SYSTEMS TYPE SEMICONDUCTOR GAS SENSOR USING MICROHEATER HAVING MANY HOLES AND METHOD FOR MANUFACTURING THE SAME UNITED STATES
Registered 2008 MICRO GAS SENSOR AND MANUFACTURING METHOD THEREOF UNITED STATES
Registered 2007 MICRO GAS SENSOR AND METHOD FOR MANUFACTURING THE SAME UNITED STATES
Registered 2012 양면 마이크로 가스 센서 및 그의 제조방법 KOREA KIPRIS
Registered 2013 DUAL-SIDE MICRO GAS SENSOR AND METHOD OF FABRICATING THE SAME UNITED STATES
Registered 2013 저전력 구동을 위한 마이크로 반도체식 가스 센서 및 그 제조 방법 KOREA KIPRIS
Registered 2009 CAPACITIVE GAS SENSOR AND METHOD OF FABRICATING THE SAME UNITED STATES
Registered 2010 ENVIRONMENTAL GAS SENSOR AND METHOD OF MANUFACTURING THE SAME UNITED STATES
연구보고서 검색결과
Type Year Research Project Primary Investigator Download
Final Report 2019 Development of GaN Nanowire-based NO2 Gas Sensor Device Hokyun Ahn
Annual Report 2018 Development of GaN Nanowire-based NO2 Gas Sensor Device Hokyun Ahn