BACKGROUND Automated and convenient multianalyte detection with high throughput is increasingly needed in clinical diagnosis. We developed a disposable 4-by-2 array for programmed simultaneous amperometric immunoassay of 4 tumor markers. METHODS We used a screen-printed technique, 1-step immobilization method, and flow injection technique. We immobilized carcinoembryonic antigen, alpha-fetopr...

Three dimensional printing was investigated for fabricating hydroxyapatite (HA) and tricalcium phosphate ( -TCP) composite scaffolds using calcium phosphate based ceramics and calcium phosphate cement chemistry. Scaffolds were formed by printing an aqueous sodium phosphate solution on the powder bed consisting of a mixture of dicalcium phosphate anhydrous (DCPA) and calcium hydroxide powders. T...

We describe a simple and affordable "Disposable electrode printed (DEP)-On-Go" sensing platform for the rapid on-site monitoring of trace heavy metal pollutants in environmental samples for early warning by developing a mobile electrochemical device composed of palm-sized potentiostat and disposable unmodified screen-printed electrode chips. We present the analytical performance of our device f...

4340 steel powders were processed with an additive manufacturing process using the FFF (Fused Filament Fabrication) technique. A composite filament was developed to print samples and study effect of bed nozzle temperatures on its physical microstructural properties. The printed debinded sintered by: Solid State (SS) at 1300 °C or SLPS (Supersolidus Liquid Phase Sintering) 1420 °C. Metallography...

In-situ pre-decorated different content of TiB2 particle reinforced 2024 Al matrix composites (xTiB2/2024Al composite, x = 0, 1, 2, 4, 6, 8 wt.%) were printed by laser powder bed fusion (LPBF). A quantitative equation was established to quantify heterogeneous nucleating potency nanoparticles on the grain size LPBFed samples. Optimized mechanical properties obtained in as-printed 4TiB2/2024Al al...

This present study focuses on evaluation of mechanical properties three dimensional (3D)-printed carbon fiber/polylactic acid (CF/PLA) composites, using fused deposition modeling (FDM) technique. The composites were prepared with different slicing parameters: layer heights or thicknesses, infill densities and patterns. 3D-printed composite samples subjected to tensile, flexural interlaminar she...

Purpose: In this study, it is aimed to evaluate the radiological tissue equivalency of different 3D printed samples obtained at printing temperatures, flow rates and infill rates.
 Materials Methods: Ultimaker 3 Extended printer LW-PLA filament were used witin scope study. A total 18 cylinders by using temperatures 195°C, 200oC 205oC, 60%, 80% 100%, 2 infilling 90% 100%. Each sample 1 cm i...

We describe a novel coating process for preserving and enhancing color images from ink jet prints. It involves stabilizing the printed image, followed by selective chemical interaction with the inks. The coating provides liquid, gas and UV light protection. It also changes the way light interacts with the original colorants. Untrained viewers (e.g. ordinary consumers) report the coated images a...