Fig. 2: Demonstration of the adhesion properties of the Janus PDMS tape.

a Janus adhesive tape can attach firmly onto the wall of a 3 L beaker to stop water leakage. In comparison, the HCPDMS tape is easily washed away because of its poor adhesion properties, and the LCPDMS tape is easily damaged because of its poor mechanical properties. b The adhesion force of the Janus adhesive tape on various substrates, including polymers (PMMA and PTFE), inorganic nonmetallic materials (glass and quartz glass), and metallic materials (stainless steel and Al). c Comparison of adhesion force between Janus adhesive tape and smooth/frosted glass surfaces