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"An Asymmetric Layer Structure Enables Robust Multifunctional Wearable " by Yanlong Yang, Liang Shao et al.

Highly robust flexible multifunctional film with excellent electromagnetic interference shielding and electrothermal/photothermal characteristics are highly desirable for aerospace, military, and wearable devices. Herein, an asymmetric gradient multilayer structured bacterial cellulose@Fe3O4/carbon nanotube/Ti3C2Tx (BC@Fe3O4/CNT/Ti3C2Tx) multifunctional composite film is fabricated with simultaneously demonstrating fast Joule response, excellent EMI shielding effectiveness (EMI SE) and photothermal conversion properties. The asymmetric gradient 6-layer composite film with 40% of Ti3C2Tx possesses excellent mechanical performance with exceptional tensile strength (76.1 MPa), large strain (14.7%), and good flexibility. This is attributed to the asymmetric gradient multilayer structure designed based on the hydrogen bonding self-assembly strategy between Ti3C2Tx and BC. It achieved an EMI SE of up to 71.3 dB, which is attributed to the gradient “absorption–reflection–reabsorption” ....

Asymmetric Gradient Multilayer Structure , Composite Films , Electromagnetic Interference Shielding , Joule Heating , Hotothermal Conversion ,

What is a Graphene Lens?

As one of the most versatile materials, graphene continues to advance in several fields, from medicine and drug delivery systems to biosensors and ocular applications. This highly regarded nanomaterial has become notorious for its remarkable physicochemical properties. With novel traction in optics over recent years, this area requires an overview in the form of graphene lenses. ....

Marzia Khan , Tatiana Kochkina Shutterstock , Marzia Khanmay , Chemical Research In Toxicology , Physicochemical Properties , Device Developments , Meibomian Gland Dysfunction , Family Nanomaterials , Ocular Applications , Chemical Research , Contact Lenses , Graphene Coating , Electromagnetic Interference Shielding , Engineering Aspects , Graphene Lens ,