Introducing Temperature-Controlled Phase Transition Elastin-like Polypeptides to Transient Electronics: Realization...

Area of Science:

• Biomedical Engineering
• Materials Science
• Nanotechnology

Background:

• Transient electronics offer harmless dissolution for in-body medical applications.
• Current transient electronics lack precise control over device destruction for high-precision implants.

Purpose of the Study:

• To propose a novel biotriggered, temperature-controlled fabrication method for transient electronics.
• To achieve programmable and precise control over the transience properties of biomedical implants.

Main Methods:

• Utilized biocompatible elastin-like polypeptides (ELPs) as triggers in a novel fabrication method.
• Mixed ELPs with trace silver nanowire (AgNW) to create a temperature-sensitive switch.
• Employed a 3D-printing approach for fabricating ELP-triggered transient electronics.

Main Results:

• ELP-AgNW mixtures demonstrated agile response to local temperature changes in deionized water.
• Ratio gradient experiments revealed programmable transience properties (resistance, timing) with optimized ELP-AgNW proportions.
• Successfully fabricated transient wireless charging LEDs using the ELP-triggering method.

Conclusions:

• The proposed ELP-based method offers a simple, effective approach for creating controllable transient electronics.
• These devices, including ELP-AgNW and PLGA-Ag, respond rapidly below 10°C and degrade predictably.
• This advancement enhances the precision and safety of transient biomedical implants.