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Related Concept Videos

Adhesion01:14

Adhesion

43.3K
Adhesion occurs when one type of molecule is attracted to a different molecule. Water exhibits adhesive properties in the presence of polar surfaces, such as glass or cellulose in plants. For instance, when water is poured into a glass, the positively charged hydrogen molecules of water are more attracted to the negatively charged oxygen molecules in the silica than to the oxygen in neighboring water molecules.
Capillary action is a result of water’s adhesive tendencies. When a narrow...
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Frictional Force01:07

Frictional Force

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When a body is in motion, it encounters resistance because the body interacts with its surroundings. This resistance is known as friction, a common yet complex force whose behavior is still not completely understood. Friction opposes relative motion between systems in contact, but also allows us to move. Friction arises in part due to the roughness of surfaces in contact. For one object to move along a surface, it must rise to where the peaks of the surface can skip along the bottom of the...
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Rod-based Fabrication of Customizable Soft Robotic Pneumatic Gripper Devices for Delicate Tissue Manipulation
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Gecko-Inspired Adhesive for Robotic Grippers with Excellent Ultra-Low-Temperature Adhesion Performance.

Jiabao Feng1, Hong Zhu2, Yadong Lv2

  • 1School of Aeronautics and Astronautics, Key Laboratory of Advanced Spatial Mechanism and Intelligent Spacecraft, Ministry of Education, National Key Laboratory of Advanced Polymer Materials, Sichuan University, Chengdu, 610065, P. R. China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|November 14, 2025
PubMed
Summary
This summary is machine-generated.

New gecko-inspired adhesives made from poly(methyl-phenyl-vinyl)siloxane (PMPVS) maintain strong adhesion at extremely low temperatures, unlike traditional polydimethylsiloxane (PDMS) adhesives. This breakthrough enables delicate robotic handling in cold environments.

Keywords:
adhesion mechanismbioinspired adhesionmicrostructureultra‐low temperature

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Area of Science:

  • Materials Science
  • Robotics
  • Adhesion Science

Background:

  • Traditional gecko-inspired adhesives based on polydimethylsiloxane (PDMS) are effective for delicate handling in vacuum and microgravity.
  • However, PDMS adhesives lose significant adhesion strength at low temperatures due to crystallization.

Purpose of the Study:

  • To develop a novel gecko-inspired adhesive with low-temperature adhesion capabilities.
  • To overcome the limitations of PDMS-based adhesives in cryogenic environments.

Main Methods:

  • Synthesis of poly(methyl-phenyl-vinyl)siloxane (PMPVS) by incorporating phenyl and vinyl side groups.
  • Evaluation of PMPVS adhesive strength at sub-zero temperatures (-70°C and -80°C).
  • Testing the durability and cyclic performance of the PMPVS adhesive.

Main Results:

  • PMPVS exhibited a low crystallization temperature of -93.0°C.
  • Adhesion strengths of 25.9 kPa at -70°C and 36.7 kPa at -80°C were achieved.
  • Compared to PDMS (0.7 kPa at -70°C), PMPVS showed superior performance.
  • The PMPVS adhesive maintained 29.4 kPa at -80°C after 100 cycles.
  • Robotic grippers with PMPVS adhesive reduced gripping force by up to 90% for various objects.

Conclusions:

  • PMPVS-based adhesives offer robust adhesion in cryogenic conditions.
  • These novel adhesives enable delicate and efficient robotic grasping across a wide temperature range.
  • The developed material represents a significant advancement for robotics in extreme environments.