Integrated Mixing/Reaction Micro Flow Cell for Chemical and Biochemical Applications

1999 ◽  
Author(s):  
Ryosuke Nakamura ◽  
Shuichi Shoji ◽  
Akira Yotsumoto
Keyword(s):  
Thin Film ◽  
Temperature Control ◽  
Temperature Sensor ◽  
Flow Cell ◽  
Reaction Chamber ◽  
Hole Array ◽  
Porous Si ◽  
Micro Flow ◽  
Junction Diode ◽  
Micro Reactor

Abstract An integrated mixing/reaction micro flow cell which consists of a sample/reagent mixing channel, a visible port and a reaction chamber was designed, fabricated and tested. A micro cone hole array of macro porous Si was employed for reagent injection part. A visible light transparent PDMS slab was used as the visible port. A Ti-Pt thin film heater and a p-n junction diode temperature sensor were integrated on the reaction chamber to realize feedback temperature control. Uniform mixing and precise temperature control were realized by the fabricated micro flow cell. The striate and simple microchannel structure of the micro flow cell is suitable for multiplexed micro reactor for chemical and biochemical applications.

scholarly journals Temperature control of micro heater using Pt thin film temperature sensor embedded in micro gas sensor

2017 ◽  
Vol 5 (1) ◽  
Author(s):  
Jun-gu Kang ◽  
Joon-Shik Park ◽  
Kwang-Bum Park ◽  
Junho Shin ◽  
Eung-An Lee ◽  
...  
Keyword(s):  
Thin Film ◽  
Gas Sensor ◽  
Temperature Control ◽  
Temperature Sensor ◽  
Micro Gas Sensor

A Disposable Polydimethylsiloxane Microdevice for DNA Amplification

2010 ◽  
Vol 93-94 ◽  
pp. 105-108 ◽  
Author(s):  
A. Lekwichai ◽  
S. Porntheeraphat ◽  
Win Bunjongpru ◽  
W. Sripumkhai ◽  
J. Supadech ◽  
...  
Keyword(s):  
Thin Film ◽  
Temperature Control ◽  
Mass Production ◽  
Temperature Sensor ◽  
Dna Amplification ◽  
The Other ◽  
Si Substrate ◽  
Mixture Volume ◽  
Cmos Compatible ◽  
Pdms Microchip

In this study, we demonstrate the disposable polydimethylsiloxane (PDMS) microchip provided for DNA amplification. The device consists of two main parts. The first part is PDMS/glass stationary chamber, the other part is a temperature-control microdevice on SiO2/Si substrate. This device consists of a thin film Pt-microheater and a Pt-temperature sensor, which were fabricated with CMOS compatible process. The performance of the device in the DNA amplification shows that, with 10 μl of PCR mixture volume, the approximately 700 bp DNA were successfully amplified within 50 minutes by 30 PCR cycles. The amplified products were comparable with those of a conventional method using electrophoresis. The PCR chip is also suitable for mass production.

scholarly journals Novel micro-reactor flow cell for investigation of model catalysts usingin situgrazing-incidence X-ray scattering

2016 ◽  
Vol 23 (2) ◽  
pp. 455-463 ◽  
Author(s):  
Jan Kehres ◽  
Thomas Pedersen ◽  
Federico Masini ◽  
Jens Wenzel Andreasen ◽  
Martin Meedom Nielsen ◽  
...  
Keyword(s):  
Grazing Incidence ◽  
Flow Cell ◽  
Reaction Chamber ◽  
Silicon On Insulator ◽  
X Ray ◽  
Ru Nanoparticles ◽  
X Ray Scattering ◽  
Micro Reactor ◽  
Ray Scattering

The design, fabrication and performance of a novel and highly sensitive micro-reactor device for performingin situgrazing-incidence X-ray scattering experiments of model catalyst systems is presented. The design of the reaction chamber, etched in silicon on insulator (SIO), permits grazing-incidence small-angle X-ray scattering (GISAXS) in transmission through 10 µm-thick entrance and exit windows by using micro-focused beams. An additional thinning of the Pyrex glass reactor lid allows simultaneous acquisition of the grazing-incidence wide-angle X-ray scattering (GIWAXS).In situexperiments at synchrotron facilities are performed utilizing the micro-reactor and a designed transportable gas feed and analysis system. The feasibility of simultaneousin situGISAXS/GIWAXS experiments in the novel micro-reactor flow cell was confirmed with CO oxidation over mass-selected Ru nanoparticles.

Chromatomembrane pre‐concentration of phenols using a new 3D printed micro flow cell followed by RP HPLC determination

2021 ◽  
Author(s):  
L.N. Moskvin ◽  
О.V. Rodinkov ◽  
А.L. Moskvin ◽  
V. Spivakovskii ◽  
A.Y. Vlasov ◽  
...  
Keyword(s):  
Flow Cell ◽  
Hplc Determination ◽  
Rp Hplc ◽  
Micro Flow ◽  
3D Printed

Laser-annealed thin-film fiber-optic temperature sensor

1994 ◽  
Author(s):  
Glenn Beheim ◽  
Jorge L. Sotomayor ◽  
Meg L. Tuma ◽  
Massood Tabib-Azar
Keyword(s):  
Thin Film ◽  
Temperature Sensor ◽  
Fiber Optic ◽  
Fiber Optic Temperature Sensor ◽  
Fiber Optic Temperature

The Research on Software of the Temperature Control of Motor Speed System

2010 ◽  
Vol 29-32 ◽  
pp. 349-353
Author(s):  
Jing Tang ◽  
En Xing Zheng
Keyword(s):  
Control System ◽  
Temperature Control ◽  
Temperature Sensor ◽  
Temperature Control System ◽  
Motor Speed ◽  
Temperature Index ◽  
Digital Temperature Sensor ◽  
Microcontroller Unit

The paper designs a temperature control system based on AT89C51 and DS18B20. The design uses the DS18B20 digital temperature sensor as the temperature acquisition unit and the AT89C51 microcontroller unit to control them, not only have the advantages that easy to control and with good flexibility, but also can greatly enhance the controlled temperature index.

Design of Ultra Low Temperature Pressure and Temperature Sensor Structure

2011 ◽  
Vol 80-81 ◽  
pp. 693-697
Author(s):  
Chang Hong Ji ◽  
Bin Zhen Zhang ◽  
Jian Zhang ◽  
Xiang Hong Li ◽  
Jian Lin Liu
Keyword(s):  
Thin Film ◽  
Low Temperature ◽  
Pressure Sensor ◽  
Temperature Sensor ◽  
Elastic Membrane ◽  
Temperature Influence ◽  
Sensor Sensitivity ◽  
Piezoresistive Pressure Sensor ◽  
Sensor Structure

In order to measure the pressure in the ultra-low temperature condition, the structure of ultra-low temperature piezoresistive pressure sensor is designed. Polysilicon nanometer thin film is used as a varistor according to its temperature and piezoresistive characteristics. The effect of the dimensions of silicon elastic membrane for the sensor sensitivity and the strain dimensions of the elastic membrane are analyzed, then layout position of resistances is arranged. The package structure of pressure sensor is designed. Meanwhile, a low-temperature sensor is designed to compensate the temperature influence to the pressure sensor.

scholarly journals Design and Build Temperature Control and Monitoring in Diesel Engines Using Mobile

2020 ◽  
Vol 10 (1) ◽  
pp. 31-37
Author(s):  
Mohammad Hasan Fuadi
Keyword(s):  
Diesel Engine ◽  
Temperature Control ◽  
Diesel Engines ◽  
Temperature Sensor ◽  
Cooling System ◽  
Cooling Water ◽  
Solenoid Valve ◽  
Valve Opening ◽  
Opening And Closing ◽  
And Control

Diesel engines is generally used for industrial and agricultural machines. Few people care about the engine temperature so it is forced to reach temperature of 100oC, which causes overheating of the diesel engine and has an impact on the performance itself. This also uses a hopper cooling system which is certainly not effective, because it's necessary to see that the water in the reservoir is still or not, also not equipped with an engine temperature display so it's difficult to ascertain the temperature inside. This study aims to monitor and control the temperature of cooling water. Operation of temperature control uses a telecontrol system that is connected to network (Internet of Things) so diesel temperature control can be done remotely. Monitoring of temperature and water level in the reserve tank using Web Mobile. In addition, there is a temperature sensor that is used to measure the temperature of the cooling water so that users can monitor the temperature of the diesel engine on Web Mobile. The test results obtained, the temperature sensor has an average temperature reading error of 0.031004%. Diesel engines with controlled solenoid valve cooling systems can produce ideal temperatures compared to when the solenoid valve is open (using the radiator continuously) or when the solenoid valve is Closed (without using a radiator). When the solenoid is controlled the engine temperature can be ideal because the solenoid valve opening and closing system has the lowest temperature of 56.34oC and the highest temperature of only 80.85oC.

Sign in / Sign up

Export Citation Format

Share Document