Nacre-inspired layered composite gels with broad tunable mechanical strength and structural color for stress visualization

Wang, Yunpeng; Kan, Xinyu; Liu, Yaru; Ju, Jie; Yao, Xi

doi:10.1039/d3nr01362f

Cited by 4 publications

(3 citation statements)

References 44 publications

(61 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…16,17 Recently, photonic crystals composed of colloidal nanosheets have attracted much attention as a new class of dynamic photonic crystals. 18–41 To manipulate their photonic properties, it is important to control the orientation of nanosheets by applying external stimuli, such as shear forces, 25,26,38 electric fields, 27,28,38–40 and magnetic fields. 29–34 Among these stimuli, a strong magnetic field serves as a promising tool because it can be applied (1) in any direction, (2) with no limitations on size and shape as long as a sample can be placed within a magnetic bore, and (3) in a non-contact manner, avoiding damage to a sample.…”

Section: Introductionmentioning

confidence: 99%

A magnetically responsive photonic crystal of graphene oxide nanosheets

Ogawa,

Nishimura,

Nishina

et al. 2024

Nanoscale

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

A magnetically responsive photonic crystal of graphene oxide nanosheets

Ogawa,

Nishimura,

Nishina

et al. 2024

Nanoscale

View full text Add to dashboard Cite

show abstract

“…Photonic crystals (PCs), composed of periodic micro- or nanostructures, have received widespread attention due to their remarkable physical properties and structural color and have numerous applications in fields such as display, printing, , sensing, − and dye, especially in the field of information encryption and anti-counterfeiting. − The current anti-counterfeiting applications associated with PCs can be roughly divided into two methods: The first one is regarded as responsive PCs with the single-mode only containing one or multiphotonic band gaps (PBGs) and exhibit vivid structural colors with invisible or switchable patterns, which are sensitive to the environment, including pH, temperature, solvent, , angle-changing, mechanical force, , and so on. The other encryption method using PCs involves integrating fluorescence and PBG into a dual-mode system.…”

Section: Introductionmentioning

confidence: 99%

Photonic Crystals Based on ZIF-8 Nanoparticles with Embedded Carbon Dots for Optical Information Encryption

Gao,

Ji,

et al. 2023

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

Photonic crystals (PCs), composed of nanoparticles as building blocks, possess a unique photonic band gap (PBG). While incorporated with fluorescent materials such as quantum dots or dyes, the PCs could provide opportunities to expand their applications in anticounterfeiting and optical information security. Selecting suitable nanounits that can act as building blocks for constructing PCs and meanwhile serve as ideal carriers for fluorescent materials to maintain their intrinsic fluorescent properties has become a crucial challenge. In this study, carbon dots embedded ZIF-8 (ZIF-8/CDs) nanoparticles with different particle sizes were prepared, and ZIF-8/CDs-based PCs were successfully obtained via hand-writing and microfluidic technology. The CDs embedded in the ZIF-8 nanoparticles could effectively prevent the aggregation-caused quenching (ACQ) effect, resulting in enhanced fluorescence stability even in the solid form, which demonstrates that ZIF-8 could serve as ideal carriers for CDs. In this process, the monodispersity of the ZIF-8/CDs nanoparticles with a certain amount of CDs was maintained and could be used as building blocks for the construction of PCs. Consequently, dual-mode PCs exhibiting both PBGs and fluorescence characteristics were successfully obtained. Finally, ZIF-8/CDs-based PC beads with different structural colors and with/without CDs were employed as pixels to create an encrypted patterned array. The array can reveal an optical pattern via structural colors under visible light and a different pattern via fluorescence under UV light. The highly fluorescence-stable ZIF-8/CDs-based PCs explored in this study have paved the way for developing dual-mode optical encryption.

show abstract

“…4,24–26 In particular, these fish can abruptly change the tilt angles (like a venetian blind) or interlayer distances of the iridophores to create a fluid and flamboyant display of color in response to stimuli in a rapidly changing environment. 4,24–26 In a similar way, suspensions of nanosheets such as H 3 Sb 3 P 2 O 14 , 27–29 phosphate, 30–32 titanate, 33 niobate, 34 perovskites 35 and fluorohectorite clay 36–38 can also display fluidic photonic properties, as these nanoparticles can form lyotropic liquid crystalline lamellar phases in which the space between nanosheets is filled with solvent molecules. The spacings ( i.e.…”

mentioning

confidence: 99%