Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Yeon Hwa Kwak"'
Publikováno v:
Current Applied Physics. 20:904-910
This paper presents an improvement of the acoustoelectric effect by sensitivity and response of ultraviolet (UV) sensors by changing the argon/oxygen ratio. The acoustoelectric sensor is a delay-line type with a center frequency of 240.2625 MHz and f
Autor:
Byeong Kwon Ju, Jin Woo Lee, Jong Woo Kim, Jinkee Hong, Kunnyun Kim, Yeon Hwa Kwak, Byungmoon Lee
Publikováno v:
Sensors and Actuators A: Physical. 293:145-149
A highly sensitive ambient light sensor based on surface acoustic waves (SAWs) was investigated. The ambient light SAW sensor is fabricated by depositing sensitive film and its resonant frequency shift was calculated in response to a change in light
Autor:
Byeong Kwon Ju, Kunnyun Kim, Yeon Hwa Kwak, Jinyong Kim, Won-Hyo Kim, Kwang Bum Park, Seawhan Choi
Publikováno v:
Sensors and Actuators A: Physical. 264:298-307
A capacitive-type touch sensor for detecting the touch position and touch load, simultaneously, is designed and manufactured using transparent electrode material. Generally, a touch sensor senses only the touch position. However, as the touch sensor
Publikováno v:
Sensors and Actuators A: Physical. 311:112044
We demonstrate an ultraviolet (UV) sensor with fast response characteristics based on an AgNW/ZnO bi-layer. This UV sensor is a surface acoustic wave (SAW)-based sensor fabricated using a 128°YX black lithium niobate substrate, which is a piezoelect
Autor:
Soo Hwan Kwak, Yeon Hwa Kwak, Un-Hwan Ha, Sangwoo Oh, Junhee Lee, Sungkyu Seo, Jung-Hoon Lee, Se-Hwan Paek
Publikováno v:
Journal of Microbiological Methods. 107:150-156
A novel biofilm detection platform, which consists of a cost-effective red, green, and blue light-emitting diode (RGB LED) as a light source and a lens-free CMOS image sensor as a detector, is designed. This system can measure the diffraction pattern
Publikováno v:
URAI
With the development of smart devices supporting VR (Virtual Reality) and AR (Augmented Reality), users' input devices are changing to wearable devices. The existing input devices for gesture recognition were relatively rigid. In this research, we pr
Publikováno v:
Sensors and Actuators B: Chemical. 196:511-517
This paper presents a compact and cost-effective lens-free complementary metal-oxide-semiconductor (CMOS) image sensor based bacterial cell detection platform that can measure colorimetric light signals in the enzyme linked immunosorbent assay (ELISA
Publikováno v:
Biosensorsbioelectronics. 94
We demonstrate a flexible strain-gauge sensor and its use in a wearable application for heart rate detection. This polymer-based strain-gauge sensor was fabricated using a double-sided fabrication method with polymer and metal, i.e., polyimide and ni
Autor:
Sangwoo Oh, Moonjin Lee, Kiyoung Ann, Dongmin Seo, Yongha Hwang, Mohendra Roy, Jaewoo Kim, Yeon Hwa Kwak, Sungkyu Seo
Publikováno v:
2015 IEEE SENSORS.
Cell and micro particle analysis is one of the major tasks in many clinical labs culturing cells. The functional profiles of cells such as concentration, size, morphology and viability are the key parameters for early diagnosis of many diseases. Howe
Autor:
Sangwoo Oh, Dongmin Seo, Mohendra Roy, Yeon Hwa Kwak, Jaewoo Kim, Jae Woo Lee, Sungkyu Seo, Kiyoung Ann, Yongha Hwang, Moonjin Lee
Publikováno v:
2015 IEEE SENSORS.
Floc size analysis is one of the major processes in bio-flocculant efficiency determination, which is critical for microalgae harvesting. Till now the flocculation analysis has been performed by using photospectrometry. In this conventional method, o