National Yunlin University of Science and Technology

Chung Yuan Christian University

National Science Council

Jung-Chuan Chou

Tai-Ping Sun

Shen-Kan Hsiung

Chung-We Pan

Wen-Yaw Chung

Yii Fang Wang

Cheng-Wei Chen

Hsuan-Ming Tsai

Chien-Cheng Chen

Nien-Hsuan Chou

Chang-Chi Lee

Stephen S K Hsiung

Yuan-Lung Chin

Diing-Jia Tzeng

Wei-Chuan Chen

Shih-I Liu

Wen Yuan Liu

Hung-Kwei Liao

Wen Bin Hong

Sheng-Hung Chen

Shih I Liu

Cheng-Hsin Liu

Lei Zhen Ce

Ya-Ping Huang

Chung-Wei Pan

Wen Yaw Chung

Chin-Shuen Hung

Chung-Lin Wu

Jun-Jie Feng

Li-Te Yin

Chih-Wei Lai

Mei-Ling Cheng

E-Ling Huang

Chu-Neng Tsai

Chin-Hsien Yen

Chih-Yu Lin

Shen-Kan Hsung

Yu-Huei Jiang

Yi-Ting Lai

Jing-Sheng Chiang

Gin-Chou Yang

Zhi Jie Chen

An ion concentration measurement system is provided. The ion concentration measurement system has: at least an end system having a sensing unit for measuring the ion concentration of a test solution to generate at least a sensing signal; a control unit for controlling the acquisition of the sensing signal; a display unit for displaying the sensing signal in real time; and an end wireless transmission interface for transmitting the sensing signal wirelessly.

Ion concentration measurement system and methods thereof

A separative extended gate field effect transistor based uric acid sensing device is provided, including: a substrate; a conductive layer including a silver paste layer on the substrate and a graphite-based paste layer on the silver paste layer; a conductive wire extended from the conductive layer; a titanium dioxide layer on the conductive layer; and a uric acid enzyme sensing film on the titanium dioxide layer.

Separative extended gate field effect transistor based uric acid sensing device, system and method for forming thereof

The invention provides a method for forming an extended gate field effect transistor (EGFET) based sensor, including: (a) providing a substrate; (b) forming a sensing film including titanium dioxide, ruthenium doped titanium dioxide or ruthenium oxide on the substrate; and (c) forming a conductive wire extended from the sensing film for external contact.

Method for forming extended gate field effect transistor (EGFET) based sensor and the sensor therefrom

The invention provides a multi-electrode measuring system including a front end device which is a sensing device including a multi-electrode sensing device having a plurality of electrodes; a multi-channel fixture coupled to the multi-electrode sensing device; and a reference electrode. A back-end device as a virtual instrumentation is an electronic device including a read out circuit device coupled to the multi-channel fixture and the reference electrode for receiving each original signal from each electrode of the multi-electrode sensing device and the reference electrode determining a sample solution; a data acquisition device coupled to the read out circuit device for digitizing each original signal to form a digital signal and for array sampling; and a signal processing device coupled to the data acquisition device for processing each signal.

Multi-electrode measuring system

A biosensor containing ruthenium, measurement using the same, and the application thereof. The biosensor comprises an extended gate field effect transistor (EGFET) structure, including a metal oxide semiconductor field effect transistor (MOSFET), a sensing unit comprising a substrate, a layer comprising ruthenium on the substrate, and a metal wire connecting the MOSFET and the sensing unit.

Biosensor containing ruthenium, measurement using the same and the application thereof

The invention provides a method for forming a sodium ion selective electrode, including: (a) providing a conductive substrate; (b) forming a conductive wire which extends from the conductive substrate for external contact; and (c) forming a sodium ion sensing film on the conductive substrate, wherein the method for forming the conductive substrate includes: providing a substrate; and forming a conductive layer on the substrate.

Method for sodium ion selective electrode, sodium ion selective electrode therefrom and sodium ion sensing device

The present invention discloses a method and an apparatus of the drift calibration of sensors. The method includes shifting the sensing signal and differential technology to remove the drift signal by time during a long measuring. The apparatus includes two voltage sensors and readout circuits, a signal-shifting circuit and a differential circuit, and the apparatus is used for outputting the response signal without time drifting.

Drift calibration method and device for the potentiometric sensor

An optical gas concentration sensor and method for measuring blood gas based on the light adsorption sensing technique are disclosed. The optical gas concentration sensor comprises a light source, a photo detector, and a gas filtering membrane for separating the indicator and a liquid. A gas in the liquid diffuses to the indicator through the gas filtering membrane so as to change the color of the indicator due to the chemical reaction occurred between the indicator and the gas. Then, the photo detector receives the light passing though the reacted indicator from the light source. The gas concentration is determined based on pH-sensitive absorbance spectrum of the indicator.

Optical blood gas sensor for real time measurement

A system of measuring pH of a solution having a calibration device to counteract time-drift effect. The calibration device of the system adjusts a compensation voltage to zero a measuring voltage of a first sensor and only respond to time-drift voltage of the first sensor. The calibration device has a differential operation amplifier receiving measuring voltages from the first sensor and a second sensor of the system to eliminate the time-drift voltages of the first and second sensors, thereby achieving calibration of the time-drift effects.

pH measurement system and method for reducing time-drift effects thereof

An amperometric sensor for uric acid and a manufacturing method thereof are disclosed, in which polyacrylamide is used to fix catalase, uricase and ferrocenecarboxylic acid on a working electrode. In determining concentration of uric acid, hydrogen peroxide is produced when enzyme and uric acid react with each other and then a reduction current generated from enzyme on the electrode with an external voltage 200 mV applied is detected. In determining concentration of uric acid, a concentration range of 2.5-20 mg/dl is achieved and sensibility of the sensor in a linear portion is 5.17 uAcm(mg/dl). In addition, reaction time required for the reaction between enzyme and uric acid is 5.17 uAcm(mg/dl).

Amperometric sensor for uric acid and method for the same

In this invention, a separative structure of the ion-selecting electrode is applied to fabricate the dual type potentiometric biosensor for creatinine detection. According to the fabrication process, the creatinine enzyme is immobilized onto a conductive layer of a substrate of pH sensing membrane and ammonium ion-selecting membrane. The conductive layer provides with a sensing region and a non-sensing region. A conductive line is extended from the conductive layer for using as an external electrical contact point. The dual type potentiometric creatinine biosensor was fabricated by using the enzyme immobilization method onto the surface of the selecting membrane of sensing membrane of pH sensing electrode and creatinine sensor.

Dual type potentiometric creatinine biosensor

Biosensor containing ruthenium, measurement using the same and application thereof

An ion solution concentration-detecting device includes a working electrode, a reference electrode, and a link element. The working electrode and the reference electrode are inserted into the link element. The working electrode, inserted into the link element, is replaceable, for the better sensitivity to the different ion solution. The working electrode being a contact-detecting electrode can be replaced by another contact-detecting electrode with different sensing membrane. The reference electrode includes a polymeric membrane with ion material covering silver/silver chloride (Ag/AgCl) electrode to provide a fixed and stable electrical potential. The working electrode may be a contact-detecting electrode having a sensing membrane. The sensing membrane may be a metal oxide or a polymer with ion material for measuring different ion solution effectively.

Ion solution concentration-detecting device

A reference pH sensor, the preparation and application thereof. The reference pH sensor is an extended gate field effect transistor (EGFET) structure and comprises a metal oxide semiconductor field effect transistor (MOSFET) on a semiconductor substrate, a sensing unit comprising a substrate, a solid-state conductive sensing layer on the substrate, and a polypyrrole layer on the solid-state conductive sensing layer, and a metal wire connecting the MOSFET and the sensing unit.

Reference pH sensor, preparation and application thereof

A wireless pH measurement system is disclosed, the wireless pH measurement system includes a portable module and a receiver end. The portable module comprises a signal detecting and processing portion and a wireless transmission portion. The signal detecting and processing portion comprises a sensor unit for detecting a pH signal, amplifying, filtering noise, analog/digital conversion and numerical processing to generate a pH measurement signal. The wireless transmission portion receives the pH measurement signal via a transmission interface and transmits by a Bluetooth module. The receiver end includes a Bluetooth receiver for receiving the pH measurement signal. The receiver end processes the pH measurement signal by programs, displays, analyzes and stores the pH measurement signal and transmits warning signal when an abnormal pH measurement signal is received.

Wireless pH measurement system

Growing community of inventors

Yunlin Hsien, Taiwan

Jung-Chuan Chou