Rutgers materials scientists discover powerful effect that could benefit robotics, aviation, medicine and other fields
Imagine repeatedly lifting 165 times your weight without breaking a sweat – a feat normally reserved for heroes like Spider-Man.
Rutgers University-New Brunswick engineers have discovered a simple, economical way to make a nano-sized device that can match the friendly neighborhood Avenger, on a much smaller scale. Their creation weighs 1.6 milligrams (about as much as five poppy seeds) and can lift 265 milligrams (the weight of about 825 poppy seeds) hundreds of times in a row.
Its strength comes from a process of inserting and removing ions between very thin sheets of molybdenum disulfide (MoS2), an inorganic crystalline mineral compound. It’s a new type of actuator – devices that work like muscles and convert electrical energy to mechanical energy.
The Rutgers discovery – elegantly called an “inverted-series-connected (ISC) biomorph actuation device” – is described in a study published online today in the journal Nature.
“We found that by applying a small amount of voltage, the device can lift something that’s far heavier than itself,” said Manish Chhowalla, professor and associate chair of the Department of Materials Science and Engineering in the School of Engineering. “This is an important finding in the field of electrochemical actuators. The simple restacking of atomically thin sheets of metallic MoS2 leads to actuators that can withstand stresses and strains comparable to or greater than other actuator materials.”
Actuators are used in a wide variety of electromechanical systems and in robotics. They have applications such as steerable catheters, aircraft wings that adapt to changing conditions and wind turbines that reduce drag, the study notes.
This tiny Rutgers creation – 3 micrometers thick (far thinner than a human hair), 0.5 centimeters wide and 6 centimeters (about 2.4 inches) long – rolls up when voltage is applied. Video by: Muharrem Acerce/Rutgers University-New Brunswick.
The discovery at Rutgers University-New Brunswick was made by Muharrem Acerce, study lead author and a doctoral student in Chhowalla’s group, with help from E. Koray Akdo?an, teaching assistant professor in Department of Materials Science and Engineering, said Chhowalla, senior author of the study.
The extremely thin sheets, also called nanosheets, remain suspended in solvents such as water. The nanosheets can be assembled into stacks by putting the solution onto a flexible material and allowing the solvent to evaporate. The restacked sheets can then be used as electrodes – similar to those in batteries – with high electrical conductivity to insert and remove ions. Inserting and removing ions leads to the expansion and contraction of nanosheets, resulting in force on the surface. This force triggers the movement – or actuation – of the flexible material.
Chhowalla and his group members found that their MoS2-based electrochemical device has mechanical properties such as stress, strain and work capacity that are extraordinary considering the electrodes are made by simply stacking weakly interacting nanosheets.
“The next step is to scale up and try to make actuators that can move bigger things,” Chhowalla said.
The Latest on: Actuators
- Intuiface and Nexmosphere Announce Partnershipon November 18, 2019 at 11:00 pm
Intuiface – the next-generation software platform for creating, deploying, and measuring deeply interactive, place-based digital content without writing code – and Nexmosphere – the leader in the ...
- A responsive “skin” could let you cuddle your child in virtual realityon November 18, 2019 at 10:09 am
In a paper in Nature today, researchers from Northwestern University in the US and the Hong Kong Polytechnic University describe creating a multilayered material incorporating a chip, sensors, and ...
- Belimo: Innovating Solutionson November 18, 2019 at 5:29 am
In 1998, Belimo entered the HVAC water application market by introducing a range of new valve actuator products. In 2014, the company also developed solutions for the retrofitting of existing valve ...
- Ichor Systems Announces New Product Line - Hybrid Conventional and Modular Diaphragm Valves A reliable and space saving solution for flow controlon November 18, 2019 at 12:00 am
This new line of Hybrid Valves incorporates additional actuation choices with Hybrid Actuators. This results in an enhanced capability shut-off valve for LOTO (Lock Out Tag Out) applications and high ...
- Ewellix launches new series of IoT-ready electro-mechanical actuatorson November 17, 2019 at 11:18 pm
Ewellix has redesigned its high performance CASM-100 and LEMC actuators with new built-in wireless sensors that can detect force and temperature. Ewellix, formerly SKF Motion Technologies, has ...
- Engine Actuators Market to Witness Huge Growth in Coming Yearson November 17, 2019 at 8:26 pm
The actuator converts the energy into mechanical motion when it receives the control signal. For Details Request Sample Copy on this Report @ ...
- Global Robotics and Automation Actuators Markets, 2015-2018 & 2019-2025 - ResearchAndMarkets.comon November 12, 2019 at 8:14 am
The "Global Robotics and Automation Actuators Market Size, By Actuation, By Type, By Application, By End-User Industry By Region; Growth Potential, Trends Analysis, Competitive Market Size and ...
- DTIC helping expand valves and actuators market, support ‘tremendous’on November 7, 2019 at 3:06 pm
It is positive that the DTIC wants to increase the market size of valves and actuators.” Vamcosa has received tremendous support from government in the form of the DTIC, says Vamcosa champion Kingsley ...
- Industrial Actuators Market- What Are The Main Factors That Contributing Towards Industry Growth?on November 6, 2019 at 11:08 pm
Global Industrial Actuators market is expected to grow significantly owing to rise in the demand of automation along with rapid industrialization growth in emerging economies. Further expanding ...
- The global automotive actuators market is projected to reach USD 39.5 billion by 2027 from an estimated USD 22.8 billion in 2019, at a CAGR of 7.1%on November 6, 2019 at 4:00 pm
Increase in production of passenger cars and commercial vehicles is a significant factor for the growth of the automotive actuators market globally Read the full report: https://www.reportlinker ...
via Google News and Bing News