Silica based biocompatible random lasers implantable in the skin

被引：15

作者：

Van Duong Ta ^{[1
]}

Tam Trong Nguyen ^{[2
]}

Thi Ha Lien Nghiem ^{[3
]}

Hong Nhung Tran ^{[3
]}

Anh Tu Le ^{[4
]}

Nguyen Thuan Dao ^{[4
]}

Phuoc Dinh Duong ^{[1
]}

Hanh Hong Mai ^{[2
]}

机构：

[1] Le Quy Don Tech Univ, Dept Opt Devices, Hanoi 100000, Vietnam

[2] Vietnam Natl Univ, Univ Sci, Fac Phys, Dept Quantum Opt, Hanoi 100000, Vietnam

[3] Vietnam Acad Sci & Technol VAST, Inst Phys, Hanoi 100000, Vietnam

[4] Vietnam Acad Sci & Technol VAST, Inst Mat Sci, Hanoi 100000, Vietnam

来源：

OPTICS COMMUNICATIONS | 2020年 / 475卷

关键词：

Random laser; Silica nanoparticle; Biocompatible; Implantable; Skin; EMISSION; NANOPARTICLES;

D O I：

10.1016/j.optcom.2020.126207

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate efficient random lasing from microslices containing dye-doped colloidal silica nanoparticles. The nanoparticles with diameters of 20 nm were synthesized by a modified Stober method, having a high emission efficiency and well dispersed in an aqueous medium. From the suspension of the nanoparticles, a film is created via self-assembly of colloidal nanoparticles. After grinding the film, microslices with dimensions of around 100-200 mu m and thickness of 2 mu m are obtained. Under optical pulse excitation, these microslices emit random lasing. The lasers operate well in the air and also in water. Their emission spectrum and lasing threshold in both conditions are studied and compared. Interestingly, lasing emission can be observed from a laser embedded into the porcine skin tissue. Our work provides a simple technique and architecture for biocompatible random lasers which have potential for biosensing and biological probes.

引用

页数：5

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