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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 News University News Smooth as Silk at the Tokyo Olympics and Paralympics News Smooth as Silk at the Tokyo Olympics and Paralympics 2021-09-03 University News When the athletes from the United Arab Emirates walked into the stadium at the opening ceremonies of the Tokyo Olympics and Paralympics in August, they wore scarves and carried flags made of a special fabric developed by Tohoku University and the UAE-Japan Friendship Silk Project. The silk came from the Japanese silkworm Koishimaru, a breed also known as "royal silkworms" because they've been grown in the imperial household by generations of empresses. Through a partnership between Tohoku University and Insect Resources Technology, Inc. - and with some help from the Japan External Trade Organization (JETRO) office in Dubai - scarves were woven from these Koishimaru threads and presented to the UAE National Olympic Committee. The project has its origins in Professor Fumio Narita's laboratory at the Tohoku University Graduate School of Environmental Studies where for several years, his team had been researching ways to develop viable alternatives to synthetic fibers. "Many products such as masks, clothes and sporting equipment use nylon and polyester, which are synthetic fibers made from petroleum. And when these synthetic fibers are discarded after use, they are not easily decomposed by microorganisms. They also generate harmful gases when they are burnt," said Narita. "Natural fibers like silk do not use petroleum so they are better for the environment. They can contribute to the realization of a decarbonized society, and may even solve the problem of marine plastic waste." But the challenge of making wide-ranging products out of silk, is the delicacy of the fabric. In 2017, Wang Zhenjin, a doctoral student on Narita's research team, was observing the diet of spiders when she had the idea of feeding cellulose nanofibers (CNF) to the silkworms. "We mixed CNFs - which are environmentally-friendly plant nanofibers - with commercially available food and fed it to the silk moths. This change in their diet resulted in stronger and thinner silkworm threads," said Narita. "We realised that if we can put this CNF/silk fiber to practical use, it could replace the conventional synthetic fiber." This breakthrough led to the publication of a research paper in 2020, which caught the attention of Norihiro Shimizu, CEO of Insect Resources Technology, Inc. Shimizu proposed a five-year joint research project that would boost the flagging Japanese silk industry by finding new uses and new markets abroad, while also being environmentally friendly. Through JETRO, Shimizu and Narita were introduced to the UAE National Olympic Committee. Two batches of 1,000 Koishimaru eggs were flown from Japan to the UAE, where students from the Japanese School in Dubai were recruited to help grow them. It wasn't easy - the climate wasn't always conducive - but the students eventually managed to grow enough silkworms to make the scarves, masks and flags for the athletes after more than a year of perseverance. Narita hopes that by accessorizing the UAE Olympic and Paralympic teams, the appeal of this new Japanese silk can be appreciated not only by the people of UAE, but also by audiences around the world who watched the opening ceremonies. As for the UAE-Japan Friendship Silk Project - these summer games were just the beginning. "Aside from the environmental benefits, a project aimed at reviving the Japanese silk industry is a long-cherished desire of ours. And for the UAE, there is a lot of diverse opportunities with new markets and new designers making things with Japanese silk," said Narita. "I think the three of us - Tohoku University, Insect Resources Technology Inc. and the UAE - have more ideas we'd like to explore together." Narita's lab is currently preparing to grow silk moths using CNF to produce stronger, more durable silk for the 2021 Dubai World Expo. And there are already plans to feature the silk at the 2022 Qatar World Cup, the 2024 Paris Olympics and 2025 Kansai-Osaka World Expo. Contact: Professor Fumio NaritaGraduate School of Environmental Studies, Tohoku UniversityEmail: naritamaterial.tohoku.ac.jp Category University News Research Arts & Culture Health & Sports Campus & Community International Visits Alumni Careers COVID-19 Archives 2014&＃24180; 2015&＃24180; 2016&＃24180; 2017&＃24180; 2018&＃24180; 2019&＃24180; 2020&＃24180; 2021&＃24180; 2022&＃24180; 2023&＃24180; 2024&＃24180; Recent News 2024-04-10 University News Tohoku University&＃039;s New President Meets the Media 2024-04-10 Careers Recruitment Notice: Associate Professor 2024-04-03 University News Tohoku University Entrance Ceremony, Spring 2024 2024-04-02 Careers Recruitment Notice: Assistant Professor 2024-04-01 University News In Conversation with Hideo Ohno Archives 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 Privacy Policy Media Enquiries Parent & Family Support Public Facilities Contact Tohoku University