Gas sensing ‘artificial nose’ created on 3D-printers
A new gas detector, developed by researchers at UBC’s Okanagan campus, enables highly accurate odour analysis for so many different applications it has been nicknamed the ‘artificial nose.’
Researchers in the School of Engineering have developed a state-of-the-art microfluidic gas detector that can detect small traces of gases quickly and efficiently. It has a number of potential uses including environmental monitoring, food and beverage quality assessments, and biological and chemical analytical systems.
The device, explains Professor Mina Hoorfar, is essentially ‘an artificial nose’ that can smell any sort of odour including noxious substances like natural gas, ammonia or sewage.
“Our sense of smell is one of the most important abilities humans have,” says Hoorfar. “Our nose affects the quality of our lives significantly and helps with the detection of toxic gases in the environment, fire awareness, spoiled food or triggering memories. With this in mind, there has always been interest in developing devices that can mimic human olfaction systems.”
The tiny gas detectors, developed in UBC Okanagan’s Advanced Thermo-Fluidic Laboratory, consist of 3D-printed parts, which create the microchannel and a metal oxide semiconductor. The detectors can be connected to a sampling chamber or be used in a lab environment.
Doctoral student Mohammad Paknahad, one of the lead researchers in the project, says the tiny detector uses two different channels and each channel has a different coating. During tests, several target gases from different families of volatile organic compounds were used including alcohols, ketones and alkanes. Paknahad says when a sample passes through the detector, the internal coatings direct the gases to the appropriate sensor where it is immediately analyzed.
“The gases interact differently with the channel coating and this is why it is called ‘like dissolves like,’” says Paknahad. “Our research demonstrates that these low-cost detectors can be custom-made for different applications while maintaining accuracy and precision.”
The technology—comparing two separate gas detectors with channels outfitted with special coatings that act differently when exposed to different gases—provides the user with the ability to adjust the coating based on the desired target gas.
“There are many examples of highly accurate systems,” says Hoorfar. “But despite their accuracy, the size and cost of these systems limit their applicability in the detection of volatile organic compounds in numerous applications that require portable and easy-to-use devices. Our devices offer a small, inexpensive and highly-accurate alternative.”
“This has the potential of changing the way municipalities and utilities conduct their monitoring,” says Hoorfar. “Based on the initial reaction of our municipal partners, we are excited to see what lies ahead.”
The Latest on: Artificial nose
via Google News
The Latest on: Artificial nose
- Israeli Scientists Invent Artificial ‘Nose’ to Detect Bacteriaon June 20, 2021 at 6:12 am
A multidisciplinary team of Ben-Gurion University of the Negev scientists has invented an artificial nose that detects a variety of bacteria. There are numerous potential applications for an ...
- 3,293 Vials Of Fake Black Fungus Injection Found In Delhi Doctor's Houseon June 20, 2021 at 3:41 am
Two doctors were among seven people arrested by the Delhi Police Crime Branch for manufacturing and selling Liposomal Amphotericin-B injections, used in the treatment of Black Fungus.
- Israeli researchers develop electronic nose to detect diseases, poisonson June 19, 2021 at 1:35 am
"It will be possible to disperse the gas sensors over a wide area in the city in order to warn of the presence of dangerous gases and air pollution," says Prof. Raz Yelink, who led the study.
- Nessa Barrett's 10 Minute Makeup Routine for Fake Freckleson June 18, 2021 at 9:14 am
Singer Nessa Barrett shows us how she pulls off a tan everyday look with her 10 minute beauty routine. With a quick cameo from her boyfriend, Jaden Hossler, Nessa also demonstrates her methods for ...
- Ginnie Graham: A spoon sticking to a nose isn't a COVID-19 vaccine side effecton June 17, 2021 at 8:15 am
Of all the things U.S. public health officials prepare for in crisis management, combating a fear of becoming a magnet probably didn't make any textbook, says columnist .
- Of fake healerson June 11, 2021 at 4:50 pm
WHILE there are larger issues keeping the official machinery busy, there are ways to curb the disgusting business being run by fake healers. This is not a business that the government has to chase and ...
- Uighur woman breaks silence as her fears grow: 'If our genocide is fake, then where is my husband?'on June 11, 2021 at 12:10 am
"It frustrates me when people say its fake, because if it was, where is my husband? "We really wanted to start our own family…" She added: "I just want to know that my husband is alive, that he's ...
- Fake News Buster: Squeezing lime into your nose won’t kill Covid-19on June 10, 2021 at 5:30 pm
THE CLAIMS A video went viral on social media, where a self-declared priest talks about how lemon is beneficial in curing Covid-19.
- 'Notice anything different about me?' RHONJ's Jennifer Aydin seems to reveal she's had a nose jobon June 10, 2021 at 1:28 pm
The Bravo reality star, 44, all but announced she'd recently had plastic surgery while wearing a bandage across her nose in a new Instagram post and livestream.
- When Richa Chadha Revealed Facing Body-Shaming: “Was Told To Fix My Nose & Inflate My Lips, Get A B**b Job”on June 9, 2021 at 11:33 am
While many have largely stayed away from talking about body shaming & Bulimia, Richa Chadda once brazenly spoke about the issue. Read on.
via Bing News