May 11, 2017 - We're happy if our results can help other researchers around the .... The results are very promising and the openQCM team can't wait to know ...
5/11/2017
openQCM testing impedance and network analyzer | Quartz Crystal Microbalance: the first scientific QCM entirely Open Source
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openQCM veri cation test using Impedance and Network Analyzer Posted on July 21, 2016 by Marco Mauro Researchers working at International University of Malaysia compared openQCM Quartz Crystal Microbalance with standard scienti c instruments Network and Impedance Analyzer Ahmad Anwar Zainuddin under the supervision of Professor Anis Nurashikin Nordin working
at Department of Electrical and Computer Engineering of International Islamic University Malaysia have compared the resonance frequency measurements of quartz crystals using openQCM and impedance – network analyzer. The comparison show a good agreement between openQCM and the standard scienti c instruments. After an email exchange between our team, talking about how to modify the original openQCM design for their speci c applications, the researchers have sent their preliminary results. When I asked to Anwar and professor Nordin the permission to publish their measurements, the team said: “We agree to publish the measurement results to the
openQCM community. We’re happy if our results can help other researchers around the world.” The researchers have made test veri cation of the resonance frequency measurement using commercial quartz crystal resonators at 16 MHz and custom designed quartz crystal sensors. They have used impedance and network analyzer to measure the actual frequency results. Veri cation Test on commercial 16MHz Quartz Crystal
openQCM test of quartz crystal in contact with liquid
Here the results testing openQCM versus impedance and network analyzer using commercial 16 MHz quartz crystal resonators
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openQCM testing impedance and network analyzer | Quartz Crystal Microbalance: the first scientific QCM entirely Open Source
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Veri cation Test on commercial 16MHz Quartz Crystal using inhouse Network Analyzer openQCM news and press review
As shown in the pictures, the results show a good agreement between openQCM and network – impedance analyzer for standard quartz crystal resonators at 16 MHz. I’d like to spend some words about the 16 MHz quartz crystal sensors working with openQCM. Arduino Micro controller has the microprocessor ATMega32U4 with a clock speed at 16 MHz. The frequency of the vibrating quartz crystal is measured by using the FreqCount algorithm developed by Paul Sto regen at PJRC, which uses the processor clock “to count” the number of pulses during a xed time interval. The nominal frequency of the quartz This website uses cookies to improve your experience. We'll assume you're ok with this, but you can optout if you wish.
openQCM testing impedance and network analyzer | Quartz Crystal Microbalance: the first scientific QCM entirely Open Source
crystal is very near to the clock of the Arduino Micro, for this reason openQCM frequency measurement shows greater uctuoations around the nominal frequency.
Why an OpenSource Quartz Crystal Microbalance ?
Veri cation Test on custom designed QCM at 14MHz The researchers are working on an intriguing custom designed QCM Quartz Crystal
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Microbalance. The devices are placed on a single quartz plate and there are a total of 6 resonators. Each resonator can be addressed independently to either the openQCM or network analyzer.
6 sensor areas on single quartz. Only 2 (D5,D6) sensors are investigated in this experiment using openQCM and Network Analyzer. (credit: custom designed by Anis Nurashikin Nordin and Ahmad Anwar Zainuddin, Department of Electrical and Computer Engineering of International Islamic University Malaysia) Here the results of openQCM and network analyzer using custom designed quartz crystal sensors at 14 MHz, for two di erent sensors of the array (D5, D6).
Veri cation Test on own design QCM at 14MHz, using openQCM and network analyzer for sensors D5
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openQCM testing impedance and network analyzer | Quartz Crystal Microbalance: the first scientific QCM entirely Open Source
Veri cation Test on own design QCM at 14MHz, using openQCM and network analyzer for sensors D6 Again, the experimantal results show a good agreement between openQCM and network analyzer for custom quartz crystal resonators at 14 MHz. I’d like to share my ideas about the very interesting quartz sensors design developed by the researchers. The 6 resonators placed on the same single quartz plate is a really intriguing setup. In my opinion, one of the most relevant feature of this setup is the QCM temperature vs frequency dependency, which can be drastically and simply reduced by comparing – mixing the signal coming from at least two di erent quartz crystal sensors: one is the “reference” and the other is the “sensor”. Summary of the results Here the summary of the results and comparison gained by the researchers during the veri cation test openQCM vs impedance – network analyzer. Device
Quartz Crystal Resonance Frequency (MHz) Standard @16Mhz
Custom D5 @14MHz
Custom D6 @14MHz
openQCM
15.977080
14.185817
14.233399
Network Analyzer
15.982350
14.183910
14.230140
Impedance
15.995100
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In conclusion, the table of comparison of resonance frequency for this experiment shows a good agreement between OpenQCM and Network Impedance Analyzer results. The results are very promising and the openQCM team can’t wait to know more about the future works of the researchers. Professor Nordin said: “Anwar is trying to perfect the design
of the quartz sensors for his PhD. We’ll give you more details once he’s perfected the fabrication process. Anwar is working very hard to get his devices working well as sensors. We’ll keep you updated with our progress”. Acknowledgments openQCM would like to give a great thanks to Professor Anis Nurashikin Nordin and PhD candidate Ahmad Anwar Zainuddin for sharing both their experimental results and This website uses cookies to improve your experience. We'll assume you're ok with this, but you can optout if you wish. knowledge with the openQCM community.
