Abstract:
:Photonic materials with positionally ordered structure can interact strongly with light to produce brilliant structural colors. Here, we found that the nonperiodic nematic liquid crystals of nanoplates can also display structural color with only significant orientational order. Owing to the loose stacking of the nematic nanodiscs, such colloidal dispersion is able to reflect a broad-spectrum wavelength, of which the reflection color can be further enhanced by adding carbon nanoparticles to reduce background scattering. Upon the addition of electrolytes, such vivid colors of nematic dispersion can be fine-tuned via electrostatic forces. Furthermore, we took advantage of the fluidity of the nematic structure to create a variety of colorful arts. It was expected that the concept of implanting nematic features in photonic structure of lyotropic nanoparticles may open opportunities for developing advanced photonic materials for display, sensing, and art applications.
journal_name
Proc Natl Acad Sci U S Aauthors
Zeng M,King D,Huang D,Do C,Wang L,Chen M,Lei S,Lin P,Chen Y,Cheng Zdoi
10.1073/pnas.1906511116subject
Has Abstractpub_date
2019-09-10 00:00:00pages
18322-18327issue
37eissn
0027-8424issn
1091-6490pii
1906511116journal_volume
116pub_type
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