Programmable assembly of CdTe quantum dots into microstructures by femtosecond laser direct writing

Bin Bin Xu; Yong Lai Zhang; Ran Zhang; Lei Wang; Xin Ze Xiao; Hong Xia; Qi Dai Chen; Hong Bo Sun

doi:10.1039/c3tc30666f

Programmable assembly of CdTe quantum dots into microstructures by femtosecond laser direct writing

Bin Bin Xu, Yong Lai Zhang^*, Ran Zhang, Lei Wang, Xin Ze Xiao, Hong Xia, Qi Dai Chen, Hong Bo Sun

^*Corresponding author for this work

Jilin University

Research output: Contribution to journal › Article › peer-review

33 Citations (Scopus)

Abstract

Reported here is the programmable assembly of CdTe quantum dots (QDs) into various pre-designed microstructures by using a femtosecond laser direct writing (FsLDW) technique. As nanobuilding blocks, CdTe QDs could be driven by a focused femtosecond laser beam to construct arbitrarily-shaped micropatterns with high resolution (170 nm). The optical properties of pristine CdTe QDs were well inherited after the FsLDW induced programmable assembly, which has been confirmed by the luminescence spectrum and the high resolution transmission electron microscope (HR-TEM) image of the assemblies. By using this technique, the CdTe QDs microstructures were integrated within microfluidic devices, which showed the capability of qualitative on-chip detection of heavy metal ions. The FsLDW induced assembly of QDs may open up a new way for the designable assembly of QDs towards the flexible fabrication and integration of QDs-based microdevices.

Original language	English
Pages (from-to)	4699-4704
Number of pages	6
Journal	Journal of Materials Chemistry C
Volume	1
Issue number	31
DOIs	https://doi.org/10.1039/c3tc30666f
Publication status	Published - 18 Jul 2013
Externally published	Yes

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title = "Programmable assembly of CdTe quantum dots into microstructures by femtosecond laser direct writing",

abstract = "Reported here is the programmable assembly of CdTe quantum dots (QDs) into various pre-designed microstructures by using a femtosecond laser direct writing (FsLDW) technique. As nanobuilding blocks, CdTe QDs could be driven by a focused femtosecond laser beam to construct arbitrarily-shaped micropatterns with high resolution (170 nm). The optical properties of pristine CdTe QDs were well inherited after the FsLDW induced programmable assembly, which has been confirmed by the luminescence spectrum and the high resolution transmission electron microscope (HR-TEM) image of the assemblies. By using this technique, the CdTe QDs microstructures were integrated within microfluidic devices, which showed the capability of qualitative on-chip detection of heavy metal ions. The FsLDW induced assembly of QDs may open up a new way for the designable assembly of QDs towards the flexible fabrication and integration of QDs-based microdevices.",

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AU - Xu, Bin Bin

AU - Zhang, Yong Lai

AU - Zhang, Ran

AU - Wang, Lei

AU - Xiao, Xin Ze

AU - Xia, Hong

AU - Chen, Qi Dai

AU - Sun, Hong Bo

PY - 2013/7/18

Y1 - 2013/7/18

N2 - Reported here is the programmable assembly of CdTe quantum dots (QDs) into various pre-designed microstructures by using a femtosecond laser direct writing (FsLDW) technique. As nanobuilding blocks, CdTe QDs could be driven by a focused femtosecond laser beam to construct arbitrarily-shaped micropatterns with high resolution (170 nm). The optical properties of pristine CdTe QDs were well inherited after the FsLDW induced programmable assembly, which has been confirmed by the luminescence spectrum and the high resolution transmission electron microscope (HR-TEM) image of the assemblies. By using this technique, the CdTe QDs microstructures were integrated within microfluidic devices, which showed the capability of qualitative on-chip detection of heavy metal ions. The FsLDW induced assembly of QDs may open up a new way for the designable assembly of QDs towards the flexible fabrication and integration of QDs-based microdevices.

AB - Reported here is the programmable assembly of CdTe quantum dots (QDs) into various pre-designed microstructures by using a femtosecond laser direct writing (FsLDW) technique. As nanobuilding blocks, CdTe QDs could be driven by a focused femtosecond laser beam to construct arbitrarily-shaped micropatterns with high resolution (170 nm). The optical properties of pristine CdTe QDs were well inherited after the FsLDW induced programmable assembly, which has been confirmed by the luminescence spectrum and the high resolution transmission electron microscope (HR-TEM) image of the assemblies. By using this technique, the CdTe QDs microstructures were integrated within microfluidic devices, which showed the capability of qualitative on-chip detection of heavy metal ions. The FsLDW induced assembly of QDs may open up a new way for the designable assembly of QDs towards the flexible fabrication and integration of QDs-based microdevices.

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Programmable assembly of CdTe quantum dots into microstructures by femtosecond laser direct writing

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