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Current issue

ELEKTRO 1/2019 was released on January 16th 2019. Its digital version will be available on February 12th 2019.

Topic: Electrotechnology; Materials for electrical engineering; Wiring material

Main Article
Electrically conductive adhesives for electrical engineering
Smart Cities (part 6)

SVĚTLO (Light) 6/2018 was released on December 3rd 2018. Its digital version will be available on January 4th 2019.

Luminaires and light apparatuses
Modular floodlights Siteco
Decorative luminaire PRESBETON H-E-X from the integral series town equipment
LED luminaires ESALITE – revolution in sphere of industrial lighting

Daylight
About median illumination by daylight
Professional colloquium Daylight in practice

Self-healable electroluminescent devices

20.12.2018 | City University of Hong Kong | www.cityu.edu.hk

In a recent study, materials scientists Guojin Liang and his coworkers at the Department of Materials Science and Engineering, City University of Hong Kong, have developed a self-healing, electroluminescent (EL) device that can repair or heal itself after damage.

Inspired by the self-healing capacity of biological systems, the novel process paves the way for a range of new electronic applications. While EL devices are typically used in digital displays, backlights for control panels and wearable electronics, they are prone to damage. The fragility can restrict device working life, sustainability and reliability for long-term electronic applications.

Self-healing electroluminescent devices

The first self-healing EL device developed in the study was constructed by using a modified self-annealing polyacrylic acid hydrogel for electrodes, coupled to self-healing polyurethane as a phosphor host for electric insulation. The scientists demonstrated that the physiochemical properties of device restoration could be maintained even after experiencing catastrophic damage. Such EL systems will have new and exciting next-generation applications as healing hydrogels and dielectric polymers in wearable devices. The work is now published on Light: Science & Applications.

Read more at City University of Hong Kong

Image Credit: Light: Science & Applications

-jk-