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  • Received: Feb. 1, 2019

    Accepted: Mar. 14, 2019

    Posted: Jun. 12, 2019

    Published Online: Jun. 12, 2019

    The Author Email: Aiwu Li (, Han Yang (

    DOI: 10.3788/COL201917.061702

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    Zhishan Hou, Jiaji Cao, Aiwu Li, Han Yang. Tunable protein microlens array[J]. Chinese Optics Letters, 2019, 17(6): 061702

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Chinese Optics Letters, Vol. 17, Issue 6, 061702 (2019)

Tunable protein microlens array 

Zhishan Hou, Jiaji Cao, Aiwu Li*, and Han Yang**

Author Affiliations

  • State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China


Based on natural protein materials, a series of lenses with different heights and focal lengths were assembled on glass substrates by femtosecond laser non-contact, masking, and cold processing. This lens array itself possesses unique and characteristic optical performance in three-dimensional parallel imaging and bending imaging. What is more profound is that by using equilibrium swelling of protein-hydrogel, once the lens array was placed in a liquid environment, with the change of ion concentration (e.g., pH), the refractive index and curvature of the protein-hydrogel would change, which leads to the flex of the focal plane of the lens, finally realizing the dynamical tunability of a protein microlens. These smart stress devices may have great potential in optical biosensing and microfluidic chip integration fields.

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