Magnetochromic Photonic Hydrogel for an Alternating Magnetic Field‐Responsive Color Display. Issue 4 (27th December 2017)

• Record Type: Journal Article
• Authors: Wang, Wentao; Fan, Xiaoqiao; Li, Feihu; Qiu, Jinjing; Umair, Malik Muhammad; Ren, Wenchen; Ju, Benzhi; Zhang, Shufen; Tang, Bingtao
• Is Part Of: Advanced optical materials. Volume 6:Issue 4(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2017-12-27
• Subjects: alternating magnetic field -- color displays -- magnetothermal effect -- photonic crystals -- stimuli‐responsive chromic materials; Optical materials -- Periodicals; Photonics -- Periodicals; 620.11295
• DOI: 10.1002/adom.201701093
• Languages: English
• ISSNs: 2195-1071

Abstract

Abstract: As an external stimulus for stimuli‐responsive chromic materials, a magnetic field has the benefits of contactless control, instant action, and ease of integration into electronic devices. Hence, the development of a magnetically responsive photonic crystal provides a new platform for color displays. However, magnetically controlled display systems have been primarily limited to liquid systems of colloidal crystals; their application to solid chromic systems has been difficult because the ordered array structure is fixed by a polymer network. A novel solid magnetochromic photonic hydrogel is developed that enables colorimetric responses to an alternating magnetic field (AMF). This notable magnetochromic performance is attributed to the superior magnetothermal effect of 1D aggregates of magnetic chains fixed in a thermosensitive hydrogel. The AMF‐responsive magnetic hydrogel exhibits excellent stability for repeated use. This study presents a basis for the development of responsive solid materials with new optical effects for future chromatic applications. Abstract : A solid photonic hydrogel for a colorimetric response to an alternating magnetic field is developed through a rapid magnetically induced self‐assembly of magnetic colloids followed by an instant UV curing process. The performance of this magnetochromic display is attributed to the superior magnetothermal effect of 1D aggregates of magnetic chains fixed in the thermosensitive hydrogel.