FRET lasing from self-assembled DNA tetrahedral nanostructures suspended in optofluidic droplet resonators

被引：9

作者：

Aas, M. ^{[1
]}

Ozelci, E. ^{[1
]}

Jonas, A. ^{[2
]}

Kiraz, A. ^{[1
]}

Liu, H. ^{[3
,4
]}

Fan, C. ^{[3
,4
]}

Chen, Q. ^{[5
]}

Fan, X. ^{[5
]}

机构：

[1] Koc Univ, Dept Phys, TR-34450 Istanbul, Turkey

[2] Istanbul Tech Univ, Dept Phys, TR-34469 Istanbul, Turkey

[3] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Div Phys Biol, Shanghai 201800, Peoples R China

[4] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Bioimaging Ctr, Shanghai 201800, Peoples R China

[5] Univ Michigan, Dept Biomed Engn, Ann Arbor, MI 48109 USA

来源：

EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS | 2014年 / 223卷 / 10期

关键词：

LASERS;

D O I：

10.1140/epjst/e2014-02280-1

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate Forster resonance energy transfer (FRET) lasing from self-assembled tetrahedral DNA complexes labeled with Cy3 and Cy5 dyes and suspended as a gain medium in aqueous micro-droplet cavities deposited on a superhydrophobic surface. Threshold fluence and differential efficiency are characterized for DNA complexes containing 1Cy3-3Cy5 and 3Cy3-1Cy5. We demonstrate that at a constant Cy5 concentration, average threshold fluence is reduced 3 to 8 times and average differential efficiency is enhanced 6 to 30 times for 3Cy3-1Cy5 as compared to 1Cy3-3Cy5. Using 3Cy3-1Cy5 nanostructures, FRET lasing is observed at very low concentrations down to similar to 1 mu M. This work shows that optofluidic microlasers based on droplet resonators can be combined with DNA nanotechnology to explore applications in bio/chemical sensing and novel photonic devices.

引用

页码：2057 / 2062

页数：6

共 16 条

[1] Self-assembled DNA tetrahedral optofluidic lasers with precise and tunable gain control [J].