Protein-Based Three-Dimensional Whispering-Gallery-Mode Micro-Lasers with Stimulus-Responsiveness
| Autor: | Qi-Dai Chen, Bo-Yuan Zheng, Yun-Lu Sun, Zhi-Shan Hou, Si-Ming Sun, Wen-Fei Dong, Hong-Bo Sun, Jin-Feng Ku |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
chemistry.chemical_classification
Multidisciplinary Active laser medium Annealing (metallurgy) business.industry Computer science Polymer Laser Bioinformatics Article law.invention Blueshift chemistry.chemical_compound chemistry law Femtosecond Rhodamine B Optoelectronics Whispering-gallery wave Photonics business Lasing threshold |
| Zdroj: | Scientific Reports |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/srep12852 |
| Popis: | For the first time, proteins, a promising biocompatible and functionality-designable biomacromolecule material, acted as the host material to construct three-dimensional (3D) whispering-gallery-mode (WGM) microlasers by multiphoton femtosecond laser direct writing (FsLDW). Protein/Rhodamine B (RhB) composite biopolymer was used as optical gain medium innovatively. By adopting high-viscosity aqueous protein ink and optimized scanning mode, protein-based WGM microlasers were customized with exquisite true 3D geometry and smooth morphology. Comparable to previously reported artificial polymers, protein-based WGM microlasers here were endowed with valuable performances including steady operation in air and even in aqueous environments and a higher quality value (Q) of several thousands (without annealing). Due to the “smart” feature of protein hydrogel, lasing spectrum was responsively adjusted by step of ~0.4 nm blueshift per 0.83-mmol/L Na2SO4 concentration change (0 ~ 5-mmol/L in total leading to ~2.59-nm blueshift). Importantly, other performances including Q, FWHM, FSR, peak intensities, exhibited good stability during adjustments. So, these protein-based 3D WGM microlasers might have potential in applications like optical biosensing and tunable “smart” biolasers, useful in novel photonic biosystems and bioengineering. |
| Databáze: | OpenAIRE |
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