A breakthrough in fabric cleaning: coating-at-will concept for stainproof fabrics

Surfactants are extensively used in daily life and industrial production, posing significant challenges to global sustainability. Household detergents, including dishwashing detergents and laundry, alone account for over 40% of the global surfactant market [1].

Bio-derived crystalline silk nanosheets for versatile macroscopic assemblies

Silk fibroin with sophisticated hierarchical architectures from nano to macro scale shows excellent mechanical properties,good biocompatibility,and outstanding processability.In particular,the crystalline region in silk fibroin contributes high strength and toughness.However,it is difficult to obtain the crystalline silk nanofibrils or nanosheets through top-down methods.The existing silk-derived components are mainly amorphous and sacrifice the delicate structure of the pristine silk.Herein,we report a gentle method to extract the crystalline silk nanosheet(SNS)from the degummed silk fibers.The crystalline SNS has seven strands ofβ-sheet nanocrystal layer and shows a thickness of 2.75 nm.It can assemble into a membrane via a vacuum filtration process and shows high transparency,excellent thermal stability,outstanding cytocompatibility,and efficient dye interception.Moreover,without external stimuli,the crystalline SNS is capable of reversibly self-assembling to well-organized microfibers.The crystalline SNS is not only a new member of silk fibroin derivatives,but also a promising assemblable unit for versatile applications.We anticipate this work will provide a new insight into the construction and applications of diverse two-dimensional(2D)functional silk materials.

An intelligent light-managing ionic skin for UV-protection,IR stealth,and optical camouflaged Morse codes

Ionic skins that demonstrate great advantages in the mechanical properties and multiple sensory capabilities are regarded as an attractive candidate to mimic functions of human skin.However,human skin is vulnerable to be damaged under long-time sunlight irradiation,and most of the current ionic skins also lack a protection against harmful ultraviolet and infrared lights.Herein,this work develops a multifunctional ionic skin based on ionic conductive and light-managing hydrogels via a facile one-step locally confined polymerization.It is mechanically adaptable,able to modulate light in the broadband solar spectrum,and protect human skin from the harmful ultraviolet and infrared lights.Moreover,without complicated processing,the ionic skin enables human-machine interactions via wireless and optical camouflaged Morse codes.We believe this work will promote the development of smart wearable devices with multiple customizable functions.

Erratum to:Bio-derived crystalline silk nanosheets for versatile macroscopic assemblies

Erratum to Nano Research 2022,15(6):5538–5544 https://doi.org/10.1007/s12274-022-4124-x The article Bio-derived crystalline silk nanosheets for versatile macroscopic assemblies,written by Baochang Cheng et al.,was erroneously originally published electronically on the publisher’s internet portal(currently SpringerLink)on 15 March 2022 with Fig.6.

Hierarchical Network-Augmented Hydroglasses for Broadband Light Management

Light management is essential for military stealth,optical information communication,and energy-efficient buildings.However,current light management materials face challenges of limited optical modulation range and poor mechanical properties.Herein,we report a locally confined polymerization(LCP)approach to develop hierarchical network-augmented hydroglasses(HNAH)based on poly(methacrylic acid)for broadband light management as well as mechanical enhancement.The dynamic geometry of the networks ranging from nano-to micro-scale enables to manage the light wavelength over three orders of magnitude,from the ultraviolet(UV)to infrared(IR)band,and reversibly switches transmittance in the visible region.A smart hydroglass window is developed with elasticity,outstanding robustness,self-healing,notch resistance,biosafety by blocking UV radiation,and high solar energy shielding efficacy with a temperature drop of 13℃.Compared to current inorganic glasses and Plexiglas,the hydroglass not only is a promising and versatile candidate but also provides novel insights into the molecular and structural design of broadband light management and optimized mechanical properties.

Bioinspired Quasi-Solid Ionic Conductors:Materials,Processing,and Applications

CONSPECTUS:Human−machine interactions in the era of the Internet of Things call for the development of intelligent bionic materials.Inspired by the biological tissues’macromolecular networks and ionic signals,quasi-solid ionic conductors,including artificial hydrogels and nonvolatile ionic elastomers,have attracted increasing interest as a promising candidate to facilitate the human−machine interactions.Benefiting from many bionic features such as biocompatibility,softness,and ionic conductivity,the quasi-solid ionic conductors evolve various functions and achieve a broad scope of applications.This Account highlights the recent progress of bioinspired quasi-solid ionic conductors as a versatile platform for human−machine interactions.It covers topics ranging from materials,processing,and applications to future opportunities and challenges.We begin by introducing bioinspired concepts and the history of artificial ionic conductors.Then,we discuss the optimization of quasi-solid ionic conductors in terms of mechanical performance,sensory capabilities,optical properties,and environmental stability.Afterward,we introduce processing methods and discuss the integration possibility and recyclability of quasisolid ionic conductors.Next,we show the human−machine interactions enabled by the quasi-solid ionic conductors,including skinlike sensors,theranostic patches,and ionic power supplies.In the end,we describe the exciting future of integrated artificial ionic systems and briefly discuss opportunities in bioinspired designs and practical applications of the quasi-solid ionic conductors.