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Intravascular Perfusion of Carbon Black Ink Allows Reliable Visualization of Cerebral Vessels

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Bioinspired Heterogeneous Structural Color Stripes from Capillaries.

Ze Zhao¹, Huan Wang¹, Luoran Shang¹

¹State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China.

Advanced Materials (Deerfield Beach, Fla.)

|October 19, 2017

Summary

Researchers developed intelligent structural color materials inspired by nature. These materials feature tunable patterns and near-infrared light-responsive bending, enabling applications like dynamic anti-counterfeiting labels.

Keywords:

anti-counterfeiting colloidal crystals graphene responsive structural color

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Area of Science:

Materials Science
Biomimetics
Nanotechnology

Background:

Structural colors are vital for organism survival and communication.
Bioinspired materials offer advanced functionalities mimicking natural phenomena.

Purpose of the Study:

To create stimuli-responsive structural color materials with tunable patterns.
To integrate near-infrared (NIR) light responsiveness for dynamic control.
To explore applications in anti-counterfeiting and intelligent sensing.

Main Methods:

Fast self-assembly of colloidal nanoparticles within capillaries to form striped patterns.
Precise tailoring of stripe width, spacing, and color by adjusting self-assembly parameters.
Integration of a NIR-light-responsive graphene hydrogel for light-induced bending.

Main Results:

Heterogeneous striped structural color materials with controllable patterns were fabricated.
The materials exhibited light-controlled reversible bending behavior with self-reporting color indication.
Demonstrated use as dynamic barcode labels triggered by NIR light for anti-counterfeiting.

Conclusions:

Bioinspired structural color materials offer precise control over optical and mechanical properties.
The developed materials show significant potential for intelligent sensors and anti-counterfeiting devices.
This work advances the field of stimuli-responsive materials and biomimetic design.