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International Affairs Students Current Students Alumni Faculty/Staff Careers--> TOHOKU UNIVERSITYCREATING GLOBAL EXCELLENCE Search 日本語 Contact Tohoku University --> About Facts & Figures Facilities Organization Chart History President's Message Top Global University Project Designated National University Global Network Promotional Videos Academics Undergraduate Graduate Courses in English Exchange Programs Summer Programs Double Degree Programs Academic Calendar Syllabus Admissions Undergraduate Admissions Graduate Admissions Fees and Expenses Financial Aid Research Feature Highlights Research Releases University Research News Research Institutes Visitor Research Center Research Profiles Academic Research Staff Campus Life International Support Office IT Services Facilities Dining & Shops Campus Bus Clubs & Circles News University News Research--> Arts & Culture Health & Sports Campus & Community Press Release--> International Visit Alumni Careers Events Exhibits Music Special Event Lecture Alumni--> Map & Directions Campus Maps & Bus--> Facilities Map--> TOHOKUUNIVERSITY About Academics Admissions Research Campus Life News Events International Affairs Students Current Students Alumni Faculty/Staff Promotional Videos Subscribe to our Newsletter Map & Directions Contact Jobs & Vacancies Emergency Information Site Map 日本語 Close Home Research News Grabbing Viruses Out of Thin Air Research News Grabbing Viruses Out of Thin Air 2020-11-25 The future could hold portable and wearable sensors for detecting viruses and bacteria in the surrounding environment. But we're not there yet. Scientists at Tohoku University have been studying materials that can change mechanical into electrical or magnetic energy, and vice versa, for decades. Together with colleagues, they published a review in the journal Advanced Materials about the most recent endeavours into using these materials to fabricate functional biosensors. "Research on improving the performance of virus sensors has not progressed much in recent years," says Tohoku University materials engineer Fumio Narita. "Our review aims to help young researchers and graduate students understand the latest progress to guide their future work for improving virus sensor sensitivity." Piezoelectric materials convert mechanical into electrical energy. Antibodies that interact with a specific virus can be placed on an electrode incorporated onto a piezoelectric material. When the target virus interacts with the antibodies, it causes an increase in mass that decreases the frequency of the electric current moving through the material, signalling its presence. This type of sensor is being investigated for detecting several viruses, including the cervical-cancer-causing human papilloma virus, HIV, influenza A, Ebola and hepatitis B. Magnetostrictive materials convert mechanical into magnetic energy and vice versa. These have been investigated for sensing bacterial infections, such as typhoid and swine fever, and for detecting anthrax spores. Probing antibodies are fixed onto a biosensor chip placed on the magnetostrictive material and then a magnetic field is applied. If the targeted antigen interacts with the antibodies, it adds mass to the material, leading to a magnetic flux change that can be detected using a sensing 'pick-up coil'. Narita says that developments in artificial intelligence and simulation studies can help find even more sensitive piezoelectric and magnetostrictive materials for detecting viruses and other pathogens. Future materials could be coilless, wireless, and soft, making it possible to incorporate them into fabrics and buildings. A proposed future society. ©Tohoku University Scientists are even investigating how to use these and similar materials to detect SARS-CoV-2, the virus that causes COVID-19, in the air. This sort of sensor could be incorporated into underground transportation ventilation systems, for example, in order to monitor virus spread in real time. Wearable sensors could also direct people away from a virus-containing environment. "Scientists still need to develop more effective and reliable sensors for virus detection, with higher sensitivity and accuracy, smaller size and weight, and better affordability, before they can be used in home applications or smart clothing," says Narita. "This sort of virus sensor will become a reality with further developments in materials science and technological progress in artificial intelligence, machine learning, and data analytics." Publication Details: Title: A Review of Piezoelectric and Magnetostrictive Biosensor Materials for Detection of COVID-19 and Other VirusesAuthors: F. Narita, Z. Wang, H. Kurita, Z. Li, Y. Shi, Y. Jia and C. SoutisJournal: Advanced MaterialsDOI: 10.1002/adma.202005448 Press release in Japanese Contact: Fumio Narita (Profile)Graduate School of Environmental Studies, Tohoku UniversityEmail: naritamaterial.tohoku.ac.jpWebsite: http://www.material.tohoku.ac.jp/~fukugo/en/ Archives 2014&＃24180; 2015&＃24180; 2016&＃24180; 2017&＃24180; 2018&＃24180; 2019&＃24180; 2020&＃24180; 2021&＃24180; 2022&＃24180; 2023&＃24180; Page Top About Tohoku University Academics Admissions Research Campus Life News Events International Affairs Students Alumni Promotional Videos Subscribe to our Newsletter Map & Directions Contact Tohoku University Jobs & Vacancies Emergency Information Site Map Media Enquiries Parent & Family Support Public Facilities Contact Tohoku University