Journal ArticleDOI
Electrokinetics with “paper-and-pencil” devices
TLDR
The underlying electrokinetic phenomenon results in enhanced liquid transport through the paper-fibre matrix, which exhibits significant active electrical controllability and improved repeatability.Abstract:
We demonstrate the occurrence of electrokinetic phenomenon in paper substrates, by developing a simple “paper-and-pencil” device. The underlying electrokinetic phenomenon results in enhanced liquid transport through the paper-fibre matrix, which exhibits significant active electrical controllability and improved repeatability. These bear far-ranging consequences towards opening up a new paradigm of fluidics over small scales.read more
Citations
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Journal ArticleDOI
Flexible supercapacitors based on paper substrates: a new paradigm for low-cost energy storage.
TL;DR: This review introduces the design, fabrication and applications of paper-based SCs, giving a comprehensive coverage of this interesting field.
Journal ArticleDOI
Flexible Electronics Based on Micro/Nanostructured Paper.
TL;DR: It is envisioned that more design concepts, working principles, and advanced papermaking techniques will be developed in the near future for the advanced functionalization of paper, paving the way for the mass production and commercial applications of flexible paper-based flexible electronics.
Journal ArticleDOI
Pencil-on-paper: electronic devices
TL;DR: This focus article highlights the recent efforts in the literature employing pencil drawings in various ways including sensors, microfluidics, energy storage and microanalytical devices, and suggests Pencil-on-paper may offer a viable route for developing lab- on-paper applications through suitable integration of the passive and active roles of the pencil-trace.
Journal ArticleDOI
Pencil Drawn Strain Gauges and Chemiresistors on Paper
TL;DR: Pencil traces drawn on print papers are shown to function as strain gauges and chemiresistors, and could also lead to new applications integrating art and electronics.
Journal ArticleDOI
A paper based self-pumping and self-breathing fuel cell using pencil stroked graphite electrodes.
TL;DR: This simple and efficient paper fuel cell can generate energy to the tune of 32 mW cm(-2) over a prolonged duration of around 1000 minutes, and with the consumption of a very low volume of formic acid as fuel (~1 mL).
References
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Journal ArticleDOI
The Dynamics of Capillary Flow
TL;DR: In this article, the rate of penetration into a small cylindrical capillary of radius $r$ was shown to be: ρ(r}^{2}+4\ensuremath{\epsilon}r)
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Patterned Paper as a Platform for Inexpensive, Low‐Volume, Portable Bioassays
TL;DR: This communication describes a simple method for patterning paper to create well-defined, millimeter-sized channels, comprising hydrophilic paper bounded by hydrophobic polymer, that will become the basis for low-cost, portable, and technically simple multiplexed bioassays.
Journal ArticleDOI
Diagnostics for the Developing World: Microfluidic Paper-Based Analytical Devices
TL;DR: Microfluidic paper-based analytical devices are a new class of point-of-care diagnostic devices that are inexpensive, easy to use, and designed specifically for use in developing countries.
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Simple telemedicine for developing regions: camera phones and paper-based microfluidic devices for real-time, off-site diagnosis.
Andres W. Martinez,Scott T. Phillips,Emanuel Carrilho,Samuel W. Thomas,Hayat Sindi,George M. Whitesides +5 more
TL;DR: A prototype system for quantifying bioassays and for exchanging the results of the assays digitally with physicians located off-site offers new opportunities for inexpensive monitoring of health, especially in situations that require physicians to travel to patients to obtain diagnostic information that might be obtained more effectively by less valuable personnel.
Journal ArticleDOI
Three-dimensional microfluidic devices fabricated in layered paper and tape.
TL;DR: A method for fabricating 3D microfluidic devices by stacking layers of patterned paper and double-sided adhesive tape to carry out a range of new analytical protocols simply and inexpensively without external pumps is described.