Journal: iScience

Article Title: Scalable visible light 3D printing and bioprinting using an organic light-emitting diode microdisplay

doi: 10.1016/j.isci.2021.103372

Figure Lengend Snippet: Basic working principles and components of the organic light-emitting diode (OLED) 3D printing system (A) Flexible OLED microdisplay adopted for use in the present platform. (B) A process performance comparison of OLED 3D fabrication to other polymer-based 3D printing methods. Resolution is defined as 1/(2δ), where δ is the minimum feature size. Plotted OLED data point is based on the average volume of cured material within three structures, computed using commercial CAD software (SolidWorks, 2021, Dassault Systèmes SolidWorks Corporation, Waltham, MA, USA). Other plotted data points represent published results, commercial manufacturer's specifications, and operating parameters best-known to the authors. Projection microstereolithography (PμSL)/large-area PμSL (LAPμSL), its large-area variant ( Zheng et al., 2012 , , ), continuous liquid interface printing (CLIP) ( Tumbleston et al., 2015 ); direct ink writing (DIW) ( Duoss et al., 2007 , ; Gratson et al., 2006 ); direct laser writing (DLW); stereolithography (SLA); selective laser sintering (SLS); volumetric ( Shusteff et al., 2017 ). The red dashed boundary represents the authors' speculation regarding the near-term potential of the OLED fabrication method reported in this work. (C) 3D schematics and (D) photographs of the OLED system components.

Article Snippet: Visible light absorption spectra data for photoinitiators and emission spectra for OLED , This paper; Mendeley Data , https://doi.org/10.17632/r8nzht4kjg.1.

Techniques: Comparison, Polymer, Software, Variant Assay

Journal: iScience

Article Title: Scalable visible light 3D printing and bioprinting using an organic light-emitting diode microdisplay

doi: 10.1016/j.isci.2021.103372

Figure Lengend Snippet: OLED-fabricated structures and self-formulated inks (A) Structures fabricated using commercial Daylight Hard resin (orange and yellow structures, 250 μm layer thickness, 1 min exposure time), and in-house-formulated ink containing PEGDA 700, 0.5% I784, and 0.001 wt% Rhodamine B (red structures, 50 μm layer thickness, 15 s exposure time). Scale bars represent 16 mm. (B) Parallel lines 100 μm in width, crosslinked using a 2-pixel wide OLED pattern. (C) Single-layer opacity comparison between OLED-vs DLP crosslinking methods, using the commercial Daylight resin in both cases. The exposure times for OLED and DLP were 15 s and 1 s, respectively. (D) Normalized absorption (norm. abs.) of photoinitiators I784, CQ, and blue food dye (BFD), and normalized emission (norm. em.) of the OLED light source. (E) Jacob's curve comparison between self-formulated (PEGDA-based) vs commercial resins described in the text. Data are represented as mean ± SEM for triplicate measurements for each layer. (F) 3D plot highlighting the synergetic effect based on the relative concentrations of the constituents of the I784-CQ initiation system. Data are represented as mean values for triplicate measurements for each layer. (G) Debound structures initially printed with resin containing 700 Da PEGDA, 0.5 wt% I784, and 50 v/w% aluminum oxide nanopowder (50 nm-average diameter) with 100 μm layer thickness, 30 s exposure time. See also Figure S1 .

Article Snippet: Visible light absorption spectra data for photoinitiators and emission spectra for OLED , This paper; Mendeley Data , https://doi.org/10.17632/r8nzht4kjg.1.

Techniques: Comparison

Journal: iScience

Article Title: Scalable visible light 3D printing and bioprinting using an organic light-emitting diode microdisplay

doi: 10.1016/j.isci.2021.103372

Figure Lengend Snippet: Characterization of the 3D light field generated by the OLED microdisplay (A) Measured spatial configuration, dimensions, and light intensity distributions. (B) Ray-tracing simulations of a 6 × 6 emissive OLED array and the corresponding light fields at various offsets away from the surface, i.e., at various cure depths.

Article Snippet: Visible light absorption spectra data for photoinitiators and emission spectra for OLED , This paper; Mendeley Data , https://doi.org/10.17632/r8nzht4kjg.1.

Techniques: Generated

Journal: iScience

Article Title: Scalable visible light 3D printing and bioprinting using an organic light-emitting diode microdisplay

doi: 10.1016/j.isci.2021.103372

Figure Lengend Snippet: OLED multi-material 3D printing (A) Schematic of the steps for multi-material fabrication whereby each layer is composed of more than one material. (B) Sample substrates fabricated using an ink containing PEGDA, 0.5% I784, with and without 0.005% BFD, using the described multi-material protocol with 250 μm layers and 30 s exposures. Scale bars are 5 mm.

Article Snippet: Visible light absorption spectra data for photoinitiators and emission spectra for OLED , This paper; Mendeley Data , https://doi.org/10.17632/r8nzht4kjg.1.

Techniques:

Journal: iScience

Article Title: Scalable visible light 3D printing and bioprinting using an organic light-emitting diode microdisplay

doi: 10.1016/j.isci.2021.103372

Figure Lengend Snippet:

Article Snippet: Visible light absorption spectra data for photoinitiators and emission spectra for OLED , This paper; Mendeley Data , https://doi.org/10.17632/r8nzht4kjg.1.

Techniques: Recombinant, Software, Control, Comparison