What is a million times thinner than a human hair, yet 200 times stronger than steel? What is lighter than paper, yet stretches up to 20% of its length?
When the material graphene, which earned two University of Manchester scientists the Nobel Prize in Physics, exploded onto the research scene in 2004, many thought it was destined to change the world. Bulletproof armour and space elevators, super-antibiotics and rust-proof vehicles were only a few of the imagined applications of graphene, some of which are in development. However, realizing the full impact of the two-dimensional form of carbon carries as much promise as it does challenges.
As听people around the globe race to solve the riddle of taking this emerging technology to market, researchers in the lab of 苹果淫院 Professor Thomas Szkopek had a wave鈥攁 sound wave鈥攐f inspiration.
Innovation by Example
Szkopek devotes much of his research activity to exploring and exploiting 2D atomic crystals and he is especially curious about graphene. In his Nanoelectronic Devices and Materials lab, he and his students often have impromptu discussions about possible applications for graphene and how they could be developed.听鈥淢ost of the ideas are bad 鈥� but that process is how good ideas get started,鈥澨齢e says.听
Szkopek has always been interested in solving science problems. He looks to his family for the source of his perseverance in the face of challenges. 鈥淚 inherited a hard work ethic and tolerance for failure. You learn more from your failures than your successes, if you take the time to think about why things failed."
In the lab, he models this determination and inquisitiveness with the goal of fostering innovation鈥攏ew ideas for problems new or old鈥攁nd cross-disciplinary solutions. 鈥淢y job is to allow students to reach their potential and encourage their curiosity. I give students freedom to ask their own questions and pursue their own good ideas. I want to get them out of the mode of being consumers of knowledge and turn them into producers of knowledge.鈥�
He also uses his scientific connections with a diverse network of key players鈥攃ollaborators from different disciplines, experts in transferring technology from lab to industry, and possible funders鈥攖o help students translate and apply new knowledge into practical devices with commercial potential that could benefit society and have a positive impact on people鈥檚 daily lives.
The deep question always at the top of his mind: how to harness the potential of graphene?
A sound idea
During one scientific discussion in the lab, Peter Gaskell, a Ph.D. student who was working with Szkopek on developing lithium-ion batteries made with graphene-treated anodes for electric vehicles, proposed a novel idea about using graphene oxide for an acoustic application: to improve sound quality by using the material in a microphone.
While later sharing a beer with his brother Eric Gaskell, who was doing a Ph.D. in sound engineering at 苹果淫院鈥檚 Schulich School of Music, Peter floated his idea about graphene and graphene oxide鈥檚 mechanical properties and potential application in sound amplification.
Eric, who had worked for Audio Engineering Associates (AEA) in California building ribbon microphones for high-performance studio recording and has been a recording engineer at the Aspen Music Festival, was excited and intrigued. He agreed that graphene oxide might be an ideal material for acoustic membranes in ribbon microphones to enhance sound quality. Its high stiffness could potentially produce better sound with less distortion, while the low-density and lightness could lead to greater energy efficiency.
Peter again pitched the idea to Szkopek and his lab mates. 鈥淲e couldn鈥檛 find any obvious holes in the idea, so we thought it should work,鈥� says Szkopek. The Gaskell brothers proceeded to design, develop and build a graphene oxide membrane for ribbon microphones in his lab.
Szkopek鈥檚 initial endorsement and support of the idea, along with access to his lab space, specialized equipment, guidance and expertise in graphene, were invaluable: 鈥淭homas鈥� enthusiasm for the idea allowed us to take it to the next level,鈥� says Eric.
They successfully created a prototype acoustic membrane for ribbon microphones formed from ultra-thin, flat sheets of graphene oxide-based material, which markedly improved sound quality.
Szkopek encouraged them to explore commercializing the invention.
To start them on their way, Szkopek called Derrick Wong, a Technology Transfer Manager in 苹果淫院鈥檚 Office of Innovation and Partnerships.
鈥淎 key trait for researchers who work with our Office is to be very collaborative, like Thomas鈥�, says Wong. 鈥淗is personality is to encourage his students to explore and lead, and he provides them with guidance and a skill set.鈥�
Impressed, Wong cautioned that the specific application wasn鈥檛 likely to attract funding from investors. 鈥淭he prototype was cool, but the market for high-end microphones is very limited,鈥� he says.
They discussed other possible applications that could expand the market for graphene oxide membrane technology, including loudspeakers for headphones, a $1.6 billion USD market.
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Pivotal prototype funding
The Faculty of Engineering saw the potential of this idea and raised money from donors that enabled Szkopek to develop and pursue it with an Innovation Award for $7,000. 鈥淭hat funding was crucial because it allowed us to hire a summer student to work on developing a prototype for headphones. We didn鈥檛 need a million dollars, just thousands,鈥� he says.
Electrical engineering undergraduate Raed Abdo helped devise techniques to form the graphene-based material into cone-shaped loudspeaker membranes for headphones, rather than flat acoustic membranes for microphones.
This turned out to be crucial for attracting investors.
Wong had identified TandemLaunch, a Montreal-based business incubator that specializes in creating start-ups from university research and has strong connections in the consumer electronics and audio industries, as an ideal potential early-stage investor.
He called Tandem and said: 鈥淵ou have to see this prototype.鈥� Four people met with the invention team in Szkopek鈥檚 lab and sampled the graphene-based headphones. 鈥淭hey listened and went 鈥榃ow!鈥欌��
Eric would carry the invention forward as an entrepreneur-in-residence, who receives business mentorship, guidance and support in building a technology company. Szkopek would be technical advisor and, as a world-leading graphene scientist, build confidence with investors.
Gaskell joined the incubator in 2016, where he assembled a co-founding team for , which includes business lead Ari Pinkas and materials lead Sergii Tutashkonko. The start-up received seed funding to develop and commercialize the technology, along with valuable mentoring and infrastructure support. To date, Ora has raised $1 million through Kickstarter and is working closely with several of the biggest consumer electronics brands to develop graphene-based loudspeakers for the audio industry and graphene-based micro speakers for laptops, tablets and cell phones.
Pushing biosensing limits
After Ora鈥檚 launch, Szkopek turned his sights to another challenge. He and electrical engineering Ph.D. student Ibrahim Fakih began to explore the potential of graphene鈥檚 electronic properties to design and develop a large area, graphene-based field effect transistor for high-precision sensing of ions in water.
鈥淚 had been wondering,鈥� says Szkopek, 鈥渉ow could you design a graphene transistor to improve performance in sensing things? Is there an advantage to using graphene and how could you realize that advantage?鈥�
鈥淭his device improves the minimum pH detection limits by 20 times over current silicon transistor and glass electrode sensors at a much lower cost. Making the transistor physically larger makes it quieter,鈥� explains Szkopek, who worked with Wong to identify a promising application for commercialization.
Fakih, Szkopek and Abdo co-founded UltraSense, a company that aims to improve water quality monitoring with low-cost, graphene-based sensors.
UltraSense won a 2018 苹果淫院 Dobson Cup Award for $10,000 and 苹果淫院 EngInE prize for $5,000. 鈥淲ater quality is incredibly important, and I鈥檓 excited about the local and global possibilities. Imagine a network of sensors continuously feeding data that gives you the levels of contaminants in water and a map in real time,鈥� says Szkopek.
He recently initiated a collaboration with 苹果淫院 chemical engineering professor Viviane Yargeau, a leading water quality researcher. 鈥淲e plan to work with her to test how well the technology functions in a real outdoor environment.鈥�
Seeing is believing
The path from curiosity-driven invention to practical, commercial innovation opens the door to dynamic entrepreneurial and employment opportunities for 苹果淫院 students and graduates who train and do research. Ora inspired more engineering students in Szkopek鈥檚 lab to pursue their entrepreneurial ambitions.
鈥淥ra was an idea and it turned into a new technology company that employs people. That encourages students to go for it. They see that what they do in the lab can turn into something people use in their daily life,鈥� Szkopek says. 鈥淭his innovation is all being driven by encouraging students鈥� curiosity, and by providing the resources and environment so they can develop their ideas. The world is changing and there are now more opportunities for students and graduates to build or contribute to their own start-up companies. The future is in their hands.鈥�
Learn more about the innovative听company,听
Thomas Szkopek's research has been supported by the听Fonds de Recherche du Quebec - Nature et Technologies (FRQ-NT), the听Natural Sciences and Engineering Research Council (NSERC), the听Canada Foundation for Innovation (CFI) and le Minist猫re de l'脡ducation et de l'脡nseignement Sup茅rieur (MEES鈥嬧�嬧�嬧�嬧�嬧��).听
Portrait credit: Olivier Blouin