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Laser-induced Forward Transfer for Flip-chip Packaging of Single Dies

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Published on: March 20, 2015

DNA Self-Switchable Microlaser.

Yifan Zhang¹, Xuerui Gong¹, Zhiyi Yuan¹

¹School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore.

|November 2, 2020

Summary

This summary is machine-generated.

Researchers developed a novel switchable laser controlled by DNA. This biointerface technology allows for reversible wavelength tuning, paving the way for programmable photonic devices.

Keywords:

DNA liquid crystals microcavity switchable biointerface tunable microlaser

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Area of Science:

Optics and Photonics
Biotechnology
Materials Science

Background:

Switchable microlasers are crucial for integrated photonics and controlling light-matter interactions.
Stimuli-responsive biointerfaces offer advanced functionalities for nanoscale optical tailoring.
Biological recognition for laser emission switching, especially with reversibility and broad spectral tunability, remains an underexplored area.

Purpose of the Study:

To demonstrate a self-switchable laser utilizing a biointerface for biological recognition-based control.
To achieve reversible and broadly tunable laser emission by exploiting DNA conformation changes.
To explore the potential of biomolecules in developing programmable photonic devices.

Main Methods:

Fabrication of a Fabry-Perot microcavity incorporating a dye-doped liquid crystal matrix.
Integration of label-free DNA molecules at the biointerface to act as a switching mechanism.
Utilizing DNA conformation changes induced by varying concentrations to alter liquid crystal orientation and control laser emission.

Main Results:

Demonstrated laser emission switching among different wavelengths triggered by DNA conformation changes.
Observed distinct temporal switching patterns of lasing wavelengths and intensities based on single-stranded DNA concentration.
Achieved reversibility of lasing wavelength through DNA hybridization with complementary sequences.

Conclusions:

The study presents a milestone in biologically controlled lasers, leveraging DNA-liquid crystal biointerfaces.
DNA conformation changes effectively control laser emission switching and wavelength tuning.
This work opens avenues for sub-nanoscale programmable photonic devices utilizing biomolecular self-recognition.