Abstract Three-dimensional printing has risen in recent years as a promising approach that fast-tracked the biofabrication of tissue engineering constructs most resemble utopian tissue/organ replacements for precision medicine. Additionally, by using human-sourced biomaterials engineered towards optimal rheological proprieties extrudable inks, best possible scaffolds can be created. These encom...

One of the main challenges for the characterization of printing systems consists, for a given substrate, in establishing the relationship between surface coverages of the selected set of inks and the spectral reflectances of the printed ink halftones. Knowledge of print halftone spectral reflectances enables deducing their colors. Models enabling the prediction of spectral reflectances as a fun...

Microcontact printing (μCP) has developed into a powerful tool to functionalize surfaces with patterned molecular monolayers. μCP can also be used to induce a chemical reaction between a molecular ink and a self-assembled monolayer (SAM) in the nanoscale confinement between stamp and substrate. In this paper, we investigate the Huisgen 1,3-dipolar cycloaddition, the Diels-Alder cycloaddition an...

A novel approach for the identification and dating of the fountain pen ink entries on paper has been established by ion-pairing high-performance liquid chromatography (IP-HPLC). Twelve black and six red fountain inks have been collected, and their ink entries have been prepared by drawing lines on paper. The chromatographic conditions for separation of their dye components after extraction with...

Direct ink writing (DIW) has demonstrated great potential as a multimaterial multifunctional fabrication method in areas as diverse as electronics, structural materials, tissue engineering, and soft robotics. During DIW, viscoelastic inks are extruded out of a 3D printer's nozzle as printed fibers, which are deposited into patterns when the nozzle moves. Hence, the resolution of printed fibers ...

Writing comprises writing tools to make documentation. With the advancement of technology, writing instruments have been developed in a phase wise manner and brought changes in ink chemistry. Recipes for formulation of inks have been modified over the years. Ink designed for use in different writing instruments or printing media have quite dissimilar components. There are occasions when documen...

The characterization of ink on paper is of importance for dating and comparing questioned ink entries in forensic document examination. Inks are commonly characterized by their colorant profile that is identified by well-established analytical methods. Numerous ink formulations show identical colorant profiles, though. In order to differentiate inks that are not distinguishable by colorant anal...

A formulation of regenerated silk fibroin solution that can be easily functionalized and inkjet printed on numerous surfaces is developed. As an example, the inks can be printed on laboratory gloves that change color when exposed to bacteria.

Abstract In the transition from carbon to iron-gall inks, two documents Egyptian Museum and Papyrus Collection in Berlin with shelfmarks P 13500 13501 discussed this work present an important case. Their inks appear brownish, although they date back fourth third century BCE, when are believed have been commonly if not exclusively used. Using imaging micro-X-ray fluorescence infrared reflectogra...

Objective: To review existing literature and provide an update on the current use of Bio-Inks potential future use. Material Methods: A MeSH keyword search was conducted to find out relevant articles for this short review. Results: Bio inks used in 3D printing grafting require various properties essential selection. Combining multiple methods improved is developing successful bio-inks functiona...