A5018171686- Analytical Chemistry and Sensors
- Advanced Sensor and Energy Harvesting Materials
- Tactile and Sensory Interactions
- Biosensors and Analytical Detection
- Gas Sensing Nanomaterials and Sensors
- Acoustic Wave Resonator Technologies
- Cell Image Analysis Techniques
- Non-Invasive Vital Sign Monitoring
- Advanced Biosensing Techniques and Applications
- Interactive and Immersive Displays
- Image Processing Techniques and Applications
- Microfluidic and Capillary Electrophoresis Applications
- Graphene research and applications
- Microfluidic and Bio-sensing Technologies
- Ergonomics and Musculoskeletal Disorders
- Muscle activation and electromyography studies
- Advanced Fluorescence Microscopy Techniques
- Advanced Optical Imaging Technologies
- Glycosylation and Glycoproteins Research
- Bacterial biofilms and quorum sensing
- Water Quality Monitoring and Analysis
- Surface Roughness and Optical Measurements
- Image and Video Quality Assessment
- Optical Coherence Tomography Applications
- Food Quality and Safety Studies
Korea Electronics Technology Institute
2009-2020
Korea University
2012-2017
This paper presents a sleep monitoring sensor based on flexible metal strain gauge. As quality of life has improved, interest in quality, and related products, increased. In this study, unlike conventional single piezoelectric material, gauge-based array polyimide nickel chromium (NiCr) is applied to provide movement direction, respiration, heartbeat data as well contact-free use by the user during sleeping. Thin-film-type resistive gage sensors are fabricated through printed circuit board...
With the development of smart devices supporting VR (Virtual Reality) and AR (Augmented Reality), users' input are changing to wearable devices. The existing for gesture recognition were relatively rigid. In this research, we propose a device by using flexible substrate manufacture that can be used in close contact with user's wrist. An array resistive strain gauge sensors was fabricated sensing spatial muscle movements showed linearly varying output characteristic, sensitivity 0.05143 Ω/g...
Floc size analysis is one of the major processes in bio-flocculant efficiency determination, which critical for microalgae harvesting. Till now flocculation has been performed by using photospectrometry. In this conventional method, optical density a sample measured time interval collecting from fixed point container, up to ~5 hrs observation period. This consuming process may not guarantee viability algae, limits efficient To address issue, we introduce real monitoring system based on...
This paper presents a new 2D structure to measure chemotactic migration of adhesive cells for analysis cell kinetics. was designed overcome Boyden chamber's disadvantages and made real-time measurement possible in 2D. The chip PDMS glass transparency. To create more than 2% concentration gradient chemotaxis measurement, the has gradually narrowing width towards material. checked by measuring fluorescent Cy3 tagged EGF as More maintained 24 hours, which confirmed microscope. HUVEC using VEGF...
Cell and micro particle analysis is one of the major tasks in many clinical labs culturing cells. The functional profiles cells such as concentration, size, morphology viability are key parameters for early diagnosis diseases. However most labs, especially resource limited settings, these processes done fully manually using conventional optical microscopes, which slow prone to subjective errors. Recently lens-free shadow imaging system has been introduced an alternative microscopy. In this...
Here we present two types of Touch Screen Panels (TSPs) consisted silicone gel and glycerin as the transparent Tactile Sensing Layer (TSL) measuring touch force(z axis) position(x-y axis). The principle TSP is based on capacitive methods in which distance between top bottom substrates varied by or interaction force leading capacitance change substrates. Silicone TSL showed detection resolution about 50gf dynamic range 0-500gf. For same test, Glycerin 10gf 200gf. These relatively excellent...
This study demonstrates a novel polymer-based flexible strain-gauge sensor for input devices in displays. Proposed user interfaces (UIs) display measures the deformation of an object by using its electrical resistance change. was fabricated double-sided fabrication method with polymer and metal, i.e., polyimide Nickel-Chrome. Experimental results show that this linearly detects forces more than 500gf, 5N, force resolution less 10gf, 0.1N. Also it can detect bending radius from 5mm to 100mm....