Using Moroccan tea tray mathematics to turn robots into skilled waiters
New hydrogel actuator allows soft robots to move over rough terrain
Interview with Hae-Won Park, Seungwoo Hong and Yong Um about MARVEL, a robot that can climb on various inclined steel surfaces

Prof. Hae-Won Park (left), Ph.D. Student Yong Um (centre), Ph.D. Student Seungwoo Hong (right). Credits: KAIST
We had the chance to interview Hae-Won Park, Seungwoo Hong and Yong Um, authors of the paper “Agile and versatile climbing on ferromagnetic surfaces with a quadrupedal robot”, recently published in Science Robotics.
What is the topic of the research in your paper?
The main topic of our work is that the robot we have developed can move agilely, not only on flat ground but also on vertical walls and ceilings made of ferromagnetic materials. Also, it has the ability to perform dexterous maneuvers such as crossing gaps, overcoming obstacles, and transitioning upon corners.
Could you tell us about the implications of your research and why it is an interesting area for study?
Such agile and dexterous locomotion capabilities will be able to expand the robot’s operational workspace and approach places that are difficult or dangerous for human operators to access directly. For example, inspection and welding operations in heavy industries such as shipbuilding, steel bridges, and storage tanks.
Could you explain your methodology? What were your main findings?
Our magnet foot can switch the on/off state in a short period of time (5 ms) and in an energy-efficient way, thanks to the novel geometry design of EPM. At the same time, the magnet foot can provide large holding forces in both shear and normal directions due to the MRE footpad. Also, our actuators can provide balanced speed/torque characteristics, high-bandwidth torque control capability, and the ability to mediate high impulsive force. To control vertical and inverted locomotion as well as various versatile motions, we have utilized a control framework (model predictive control) that can generate reliable and robust reaction forces to track desired body motions in 3D space while preventing slippage or tipping-over occurs. We found that all the elements mentioned earlier are imperative to perform dynamic maneuvers against gravity.
What further work are you planning in this area?
So far, the robot is able to move on smooth surfaces with moderate curvature. To enable the robot to move on irregularly shaped surfaces, we are working on designing a compliantly-integrated multiple miniaturized EPMs with MRE footpads that can increase the effective contact area to provide robust adhesion. Also, a vision system with high-level navigation algorithms will be included to enable the robot to move autonomously in the near future.
About the authors
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Hae-Won Park received the B.S. and M.S. degrees from Yonsei University, Seoul, South Korea, in 2005 and 2007, respectively, and the Ph.D. degree from the University of Michigan, Ann Arbor, MI, USA, in 2012, all in mechanical engineering. He is an Associate Professor of mechanical engineering with the Korea Advanced Institute of Science and Technology, Daejeon, South Korea. His research interests include the intersection of control, dynamics, and mechanical design of robotic systems, with special emphasis on legged locomotion robots. Dr. Park is the recipient of the 2018 National Science Foundation (NSF) CAREER Award and NSF most prestigious awards in support of early-career faculty. |
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Seungwoo Hong received the B.S. degree from Shanghai Jiao Tong University, Shanghai, China, in July 2014, and the M.S. degree from Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea, in August 2017, all in mechanical engineering. He is currently a Ph.D. candidate with the Department of Mechanical Engineering, KAIST, Daejeon, Korea. His current research interests include model-based optimization, motion planning and control of legged robotic systems. |
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Yong Um received the B.S. degree in mechanical engineering from the Korea Advanced Institute of Science and Technology, Daejeon, South Korea, in 2020. He is currently working toward the Ph.D. degree in mechanical engineering in Korea Advanced Institute of Science and Technology. His research interests include mechanical system and magnetic device design for legged robot. |
CES unveiled 2023 all access with Brian Tong (+ interviews & keynotes)

CES Unveiled was jam packed with the latest and greatest tech from companies from all over the world. Get a behind-the-scenes look with Brian Tong at the innovations we saw.
C Space Studio & Anchor Desk interviews
Keynotes & Insider look
Antarctic rover performs research in the snow
Feathered robotic wing paves way for flapping drones
Automated optical inspection of FAST’s reflector surface using drones and computer vision
A precision arm for miniature robots
Why Manufacturing’s Technological Evolution Must Never End
Why Manufacturing’s Technological Evolution Must Never End
Robot Talk Episode 32 – Interview with Mollie Claypool

Claire chatted to Mollie Claypool from Automated Architecture about robot house-building, zero-carbon architecture, and community participation.
Mollie Claypool is CEO of AUAR Ltd, a tech company revolutionising house building using automation. Mollie is a leading architecture theorist focused on issues of social justice highlighted by increasing automation in architecture and design production. She is also Associate Professor in Architecture at The Bartlett School of Architecture, UCL.
A Guide to Selecting the Right LiDAR Sensors
Get ready to robot! Robot drawing and story competitions for primary schoolchildren now officially open for entries

The EPSRC UK Robotics and Autonomous Systems (UK-RAS) Network is pleased to announce the official launch of its 2023 competitions, inviting the UK’s primary schoolchildren to share their creative robot designs and imaginative stories with a panel of experts, for a chance to win some unique prizes. These annual competitions, which have proved hugely popular with budding authors and illustrators nationwide, are now returning for the fourth year.
The “Draw A Robot” competition challenges children in Key Stage 1 (aged 5-7 years old) to design a robot that they’d like to see in the future. Children can use whichever drawing materials they prefer — paper, pens, pencils, paints, crayons, or even natural materials — to create their ideal robot design, and the robot can be designed to perform any task or job. Competition participants will be able to explain their robot’s functions by labelling gadgets and features on the drawing and writing a short design spec.
For the “Once Upon A Robot” writing competition, Key Stage 2 children (aged 7-11 years old), are invited to write an imaginative short story featuring any kind of robot – or robots – their imagination can conjure! Children will have up to 800 words to tell their creative robot tales and they can choose any literary genre they like. It could be a spine-tingling horror, an action-packed adventure, or even a light-hearted comedy.

ZOOG by Matilde Facchini, age 7 (Draw a Robot 2022 Winner)

Plan-o-bot by Tehmina Walker, age 6 (Draw a Robot 2021 Winner)
The two competitions will be judged by robotics experts from the organising ESPRC UK-RAS Network, plus two very special invited judges. The writing competition will be judged this year by award-winning author Sharna Jackson, whose inspiring and mystifying books include High-Rise Mystery and The Good Turn. The drawing competition will be judged by internationally acclaimed Anglo/American author, illustrator and artist Ted Dewan, creator of the Emmy-Award-winning animated television series Bing.
This year’s exclusive prize packages include:
Draw A Robot Competition winner
- Thames & Kosmos Coding and Robotics kit – contributed by competition partner the University of Sheffield Advanced Manufacturing Research Centre (AMRC)
- A tour of the AMRC’s Factory 2050 in Sheffield, the UK’s first state-of-the-art factory dedicated to conducting collaborative research into reconfigurable digitally assisted assembly, component manufacturing and machining technologies
- A copy of the book “The Sorcerer’s Apprentice”, signed by competition judge Ted Dewan
Draw A Robot Competition runner-up
- 4M Green Science Solar Hybrid Power Aqua Robot – contributed by competition partner the UKRI Trust Worthy Autonomous Systems (TAS) hub
- A copy of the book “Top Secret”, signed by competition judge Ted Dewan
Once Upon A Robot Competition winner
- Lego Mindstorms Robot Inventor kit – contributed by competition partner Birmingham Extreme Robotics Lab
- A tour of the Extreme Robotics Lab in Birmingham and a robotics masterclass from RobotCoders for the winner and a friend
- Printed copy of the winning story with bespoke illustrations by illustrator and science communicator Hana Ayoob
- A copy of the books “The Good Turn” and “Black Artists Shaping the World”, signed by competition judge Sharna Jackson
Once Upon A Robot Competition runner-up
- Maqueen Lite – micro:bit – contributed by competition partner The National Robotarium
- A copy of the book “High-Rise Mystery”, signed by competition judge Sharna Jackson
For more information, details of prizes, judging criteria and to submit an entry, please visit https://www.ukras.org.uk/school-robot-competition/.
Both competitions are open for entry from the 10th January and will close for submissions on the 23rd April. The winners will be announced at a special virtual award ceremony due to be held on 22nd June 2023.
EPSRC UK-RAS Network Chair Prof. Robert Richardson says: “We are absolutely delighted to be launching these two fantastic competitions for primary schoolchildren for the fourth year running, which offer the next generation a creative way to engage with the exciting world of robotics and automation. We can’t wait to see the imagination and ingenuity that the nation’s young authors and artists bring to these challenges, and we look forward to the very enjoyable task of judging this year’s entries.”
The two creative competitions for young children were first launched in 2020 for UK Robotics Week, now the UK Festival of Robotics – a 7-day celebration of robotics and intelligent systems held at the end of June. This annual celebration is hosted by the EPSRC UK Robotics and Autonomous Systems (UK-RAS) Network, which provides academic leadership in robotics and coordinates activities at 35 partner universities across the UK.