Pen Writing Only
Pen Writing Only - Related Videos
08:48
Writing Bragg Gratings in Multicore Fibers
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Cited by 3 •
2016
We describe a technique for inscribing identical fiber Bragg gratings into each core of a multicore fiber. This is achieved by introducing an additional surface into the optical path to mitigate lensing by the curved surface of the fiber cladding.
06:30
Noninvasive, In-pen Approach Test for Laboratory-housed Pigs
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Cited by 3 •
2019
This protocol describes a new behavioral test—the human approach test in the pigs' home pen—to detect functional deficits in laboratory pigs after subconcussive traumatic brain injury.
01:11
Guidelines for Writing Outcome
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2023
When developing expected outcomes for a patient care plan, the nurse should adhere to the following recommendations: Patient outcomes reflect the patient's response to the goal rather than what the nurse aims to achieve. Terminology should be observable and measurable to avoid the reader's interpretation. The desired outcome should be realistic and achievable in the designated care timeframe. Expected outcomes should align with adjunctive therapies. The outcome should enhance care evaluation by...
06:44
3D Printing - Evaluating Particle Emissions of a 3D Printing Pen
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Cited by 20 •
2020
This protocol presents a method to analyze the emission of 3D printing pens. Particle concentration and particle size distribution of the released particle is measured. Released particles are further analyzed with transmission electron microscopy (TEM). Metal content in filaments is quantified by inductively coupled plasma mass spectrometry (ICP-MS).
10:36
Prescribed 3-D Direct Writing of Suspended Micron/Sub-micron Scale Fiber Structures via a Robotic Dispensing System
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Cited by 6 •
2015
Here, we present a protocol to fabricate freely-suspended, micron/sub-micron scale polymer fibers and “web-like” structures generated via automated direct writing procedure by means of a 3-axis dispensing system.
FAQs
These variables influence how far the ink spreads and how sharply the written feature remains defined. Ink composition controls which dyes, pigments, and additives are deposited after solvent evaporation. Surface properties affect interaction with the deposited material, while pressure changes the amount and distribution of ink transferred, producing differences in line width or intensity.
Drying provides a visible example of solvent evaporation and the retention of dissolved or dispersed components on a substrate. As the solvent leaves, dyes, pigments, and additives remain behind, so the final appearance reflects both the original ink formulation and the way the liquid moved across the surface before drying.
Chromatography adds a separation step to the written pattern. When ink components move through a solvent, different constituents can travel differently, allowing a visibly uniform mark to reveal multiple dyes or other components. This makes the technique useful for connecting direct pattern formation with chemical composition and solvent-driven movement.
The substrate is not merely a support; its properties influence how the ink spreads and how deposited substances remain in place. Stronger or weaker interactions can change feature definition and the appearance produced after evaporation. Comparing patterns on different surfaces can therefore demonstrate how material properties affect chemical deposition and visible results.
Write a controlled mark on a suitable substrate, then allow a solvent to move through the region containing the ink. Observe whether the original mark remains together or separates into visibly different regions as the solvent travels. The resulting pattern can be examined for evidence that the ink contains components with different movement behavior.
A single activity can introduce solubility, adsorption, diffusion, and chromatography through visible changes in an ink pattern. Students can relate solvent movement and surface interactions to the distribution of dyes or pigments. Because the materials are familiar and the outcome is observable, the approach supports accessible demonstrations as well as introductory analytical investigations.