Direct 3D-printed CdSe quantum dots via scanning micropipette. Issue 4 (29th November 2022)

• Record Type: Journal Article
• Authors: Yun, Taesun; Kim, Yong Bin; Lee, Taegeon; Rho, Heesuk; Lee, Hyeongwoo; Park, Kyoung-Duck; Lee, Hong Seok; An, Sangmin
• Is Part Of: Nanoscale advances. Volume 5:Issue 4(2023)
• Page Start: 1070
• Page End: 1078
• Publication Date: 2022-11-29
• Subjects: 620.5
• DOI: 10.1039/d2na00627h
• Languages: English
• ISSNs: 2516-0230

Abstract

Abstract : The pencil-shaped micropipette is a potentially promising tool for the three-dimensional micro/nanoscale printing based on its capability to deliver low volumes of nanomaterial solution on a desired spot. Abstract : The micropipette, pencil-shaped with an aperture diameter of a few micrometers, is a potentially promising tool for the three-dimensional (3D) printing of individual microstructures based on its capability to deliver low volumes of nanomaterial solution on a desired spot resulting in micro/nanoscale patterning. Here, we demonstrate a direct 3D printing technique in which a micropipette with a cadmium selenide (CdSe) quantum dot (QD) solution is guided by an atomic force microscope with no electric field and no piezo-pumping schemes. We define the printed CdSe QD wires, which are a composite material with a QD–liquid coexistence phase, by using photoluminescence and Raman spectroscopy to analyze their intrinsic properties and additionally demonstrate a means of directional falling.