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Swelling sponges

J. Ha et al. "Poro-elasto-capillary wicking of cellulose sponges," Science Advances 4, eaao7051 (2018)

An absorbing study on the maths of sponges, Nature Research Highlights, March 30, 2018


물 먹은 스펀지가 팽창하는 이유?…서울대 연구팀 원리 규명, 연합뉴스, April 2, 2018


스펀지가 물 빨아들이는 원리 찾았다, 동아사이언스, May 23, 2018


서울대 김호영 교수팀, 액체 흡수와 팽창의 원리 밝혀, 베리타스 알파, April 2, 2018


서울대 김호영 교수팀, 액체 흡수와 팽창의 원리 밝혔다, 디지털 타임스, April 2, 2018




Moisture-gradient-driven soft robot

B. Shin et al. "Hygrobot: A self-locomotive ratcheted actuator powered by environmental humidity," Science Robotics 3, eaar2629 (2018)

Meet the tiny machines that harness humidity for power, Physics Central, May 15, 2018


An inchworm robot powered by humidity, Nature, January 24, 2018


Forget batteries: this tiny, wriggly robot runs on moisture, The Verge, January 26, 2018


Humidity-powered "inchworming" robots are coming to get you... slowly, Australia's Science Channel, January 25, 2018


Plant-Inspired Robots Inch Forward by Absorbing and Releasing Water, Inside Science News Service, January 24, 2018


수분 흡수해 앞으로 전진!…신개념 소형 로봇 탄생, YTN Science, February 19, 2018


습기만 있으면 로봇이 움직입니다, 동아일보, January 26, 2018


서울대 연구팀, 물로 가는 자동로봇 개발했다, 한겨레 ,January 25, 2018


서울대 연구팀, 물로 움직이는 소프트 로봇 개발, 연합뉴스, January 25, 2018


피부질환 치료, 물로 움직이는 로봇 개발, 문화일보, January 25, 2018


서울대 연구팀, 하계 다보스포럼 최신 연구성과 발표, 베리타스 알파, September 20, 2018




Self-burrowing rotary seeds

W. Jung et al. “Reduction of granular drag inspired by self-burrowing rotary seeds," Physics of Fluids 29, 041702 (2017)

Mimicking seed burrowing could lead to applications in robotics, Engineering and Technology, April 25, 2017


Nature plants a seed of engineering inspiration, EurekAlert, April 24, 2017


Mechanical Engineering Being Inspired By Burrowing Seeds, EngineersGarage, April 24, 2017


Nature plants a seed of engineering inspiration, ScienceDaily, April 24, 2017


Nature Plants a Seed of Engineering Inspiration, ScienceNewsline, April 25, 2017




Jumping on water

E. Yang et al. “Water striders adjust leg movement speed to optimize takeoff velocity for their morphology,” Nature Communications 7, 13698 (2016)

소금쟁이가 물 위에서 자유자재로 움직이는 원리 밝혔다, 조선비즈, December 8, 2016


소금쟁이의 '점프'…과학으로 풀었다, 아시아경제, December 8, 2016


J.-S. Koh et al. “Jumping on water: Surface tension-dominated jumping of water striders and robotic insects,” Science 349, 517-521 (2015)

[특집] 꿀꺽 삼키면 치료가 싹~! 마이크로 로봇, 어린이과학동아, December 1, 2016


Robotic insect mimics nature’s extreme moves, Harvard News, July 30, 2015


Robotic insect mimics nature’s extreme moves, WYSSgazette, July 31, 2015

Video: Tiny robot walks, jumps on water, Science News, July 30, 2015


The robot that jumps on water, BBC, July 30, 2015


‪Minority Report-type insect robots jump on water‬, Reuters, July 30, 2015


Scientists Create Robotic Insect That Can Jump on Water, NBC, July 30, 2015


Never Mind Walking; Some Insects Can Jump on Water, The New York Times, August 3, 2015


This bug-inspired robot can jump on water, The Washington Post, July 30, 2015


Insekten als Vorbild: Dieser Mini-Roboter hüpft übers Wasser, Spiegel, July 31, 2015


국내 연구진, 수면 위 뛰는 ‘소금쟁이 로봇’ 개발 성공, KBS TV News 9, July 31, 2015


물 위에서도 가뿐히...'소금쟁이 로봇' 개발, YTN TV News, July 31, 2015


서울대' 소금쟁이 로봇, 몸무게가 고작 68mg…“수상 도약 로봇”, 조선일보, July 31, 2015


소금쟁이 로봇 개발, 표면 장력 최대한 활용…‘수상 도약 로봇’, 동아일보, July 31, 2015


자기 몸 14배 높이 점프하는 ‘소금쟁이 로봇’ 첫 개발, 한겨레, July 31, 2015


소금쟁이처럼 수면 점프하는 초경량 로봇 개발, 연합뉴스, July 31, 2015


물 위에서의 도약, 그 우아함의 재현, 서울대 사람들, 가을호, 2015


자연에서 찾은 미래, 생체모방기술, KBS TV 장영실쇼, January 17, 2016




Harvesting wind energy

J. Bae et al. “Flutter-driven triboelectrification for harvesting wind energy,” Nature Communications 5, 4929 (2014)

An electric power plant on the roof of your car?, LA Times, September 23, 2014


A strange flutter generator strapped to the roof of a car producing useable power, Business Insider, September 24, 2014


운전하면서 전기 만든다, 동아사이언스, September 24, 2014


Renewable energy: Baby you can charge my car, Nature Asia, September 24, 2014


How we can harvest wind power from tiny flapping flags, Wired, September 23, 2014


Fluttering flags to harvest power looks promising to researchers, Techxplore, September 25, 2014




Hydrodynamics of fish gills

K. Park et al. “Optimal lamellar arrangement in fish gills,” Proceedings of the National Academy of Sciences of the United States of America 111, 8067-8070 (2014)

Gill-on-a-chip illuminates evolution, Science, June 20, 2014


물고기의 아가미 주름, 그냥 있는 게 아니었네, 과학동아, June 2, 2014




Moisture-gradient-driven botanical motions

W. Jung et al. “Self-burial mechanics of hygroscopically responsive awns,” Integrative and Comparative Biology 54, 1034–1042 (2014)

Water's Tough Skin, Science, March 14, 2014


설익은 바이오 미세유체기술, 과학동아, March 14, 2014




Nanoscale 3-D printing

M. Lee and H.-Y. Kim “Toward nanoscale three-dimensional printing: Nanowalls built of electrospun nanofibers,” Langmuir 30, 1210-1214 (2014)

나노(nano)로 직조해낸 3D 프린팅의 세계, 대학신문, May 3, 2014


3D '나노' 프린터 나왔다, 동아사이언스, March 27, 2014


3D printing goes nanoscale, Nature, March 20, 2014


FDM on the Nanoscale?, 3D Printing Industry Newsletter, February 20, 2014


3D printing builds a nanowall, 3ders.org, February 5, 2014


Nanotechnology is getting closer to 3D nanoprinting, Nanowerk, February 5, 2014




Writing with ink

J. Kim et al. “Hydrodynamics of writing with ink,” Physical Review Letters 107, 264501 (2011)

Hydrodynamics of writing with ink, Asia Pacific Physics Newsletter, August 2012


Let it flow, Nature Physics, December 1, 2011


How ink flows, ScienceShot, Science, November 22, 2011


From pen to paper, InsideScience.org, December 29, 2011


Physics of writing is derived at last, Physicsworld.com, November 22, 2011


“글씨의 물리학: 펜과 종이 모세관의 잉크 줄다리기”, Science On, November 29, 2011


“만년필에서 잉크가 술술 나오는 이유”, 동아사이언스, February 20, 2012




Drop impact

M. Lee et al. "Drop impact on microwetting patterned surfaces," Physics of Fluids 22, 072101 (2010)

물방울로 빚은 '최첨단 나노 예술', KBS TV News 9, August 16, 2010




Tilted Janus pillars

M.-W. Moon et al. “Tilted Janus polymer pillars,” Soft Matter 6, 3926-3929 (2010)

Sticky materials from bent pillars, Highlights in Chemical Science, June 25, 2010


Replicating a sticky situation in nature, news@Northeastern, June 29, 2010 (Nanomegazine, June 30, 2010 and Small Times, July 1, 2010)




Nanopottery

H.-Y. Kim et al. “Nanopottery: Coiling of electrospun polymer nanofibers,” Nano Letters 10, 2138-2140 (2010)

Petite pottery, Nature, June 3, 2010


Microfabrication: Polymer nanopottery, NPG Asia Materials, pp. 228, Vol. 2, October 2010


'나노 크기 도자기' 제작기술 개발, 연합뉴스, June 7, 2010


세계서 제일 작은 '나노 도자기' 빚었다, 동아일보, June 8, 2010


나노 크기의 도자기, 연합뉴스, June 7, 2010




Bouncing on water

D.-G. Lee and H.-Y. Kim “Impact of a superhydrophobic sphere onto water, Langmuir 24, 142-145 (2008)

How to walk on water, Science, January 11, 2008


Scientists crack how insect bounces on water, Daily Telegraph, UK, December 7, 2007


로봇의 사부님은 동물, 중앙일보, January 21, 2008


Tiptoe acrobats get it just right, Science News, January 5, 2008


'소금쟁이' 로봇, KBS TV News 9, December 12, 2007


소금쟁이 '점프의 비밀', 한국 과학자가 풀었다, 연합뉴스, December 11, 2007


Scientists discover how to make robots bounce on water, ENN, December 10, 2007


Solving another mystery of an amazing water walker, PhysOrg, December 10, 2007


Scientists discover how to make robots bounce on water, Environmental Graffiti, December 9, 2007


How water insects bounce on water without sinking revealed, Thaindian News, December 8, 2007