Active, paper-based, microfluidic chips driven by electrowetting are fabricated and demonstrated for reagent transport mixing. Instead of using the passive capillary force on pulp to actuate a flow liquid, group digital drops transported along programmed trajectories above electrodes printed low-cost paper, which should allow point-of-care production diagnostic activities in future.

We present the development of a flexible bimodal sensor using paper platform and inkjet printing method, which are suited for low-cost fabrication processes realization devices. In this study, we employed vertically stacked device architecture in temperature is on top pressure operated different principles, allowing minimization interference effects. For placed layer, used thermoelectric effect formed closed-loop thermocouple composed two printable inks (conductive PEDOT:PSS silver...

The printing and modular fabrication of a paper‐based active microfluidic lab on chip implemented with electrochemical sensors (ECSs) is developed integrated portable electrical control system. electrodes plate for electrowetting actuation digital drops an ECS multiple analysis assays are fabricated by affordable techniques. For enhanced sensitivity the sensor, working electrode modified through method, namely reducing graphene voltammetry coating gold nanoparticles amperometry. Detachable...

A novel platform of microfluidic paper-based analytical devices (μPADs) for dual detection bisphenol (BPA), a model analyte, was fabricated using an electronic digital plotter to create the stacked layer μPADs and generate lateral-flow channel without external pump. Two techniques, including electrochemical laser desorption ionization mass spectrometric (LDI-MS), were used complementarily improve precision in BPA. The fluid sample delivered both zones by capillary action, automatically...

In order to fabricate a digital microfluidic (DMF) chip, which requires patterned array of electrodes coated with dielectric film, we explored two simple methods: Ballpoint pen printing generate the electrodes, and wrapping plastic film coat electrodes. For precise programmable used plotter ballpoint filled silver nanoparticle (AgNP) ink. Instead using conventional material deposition methods, such as chemical vapor deposition, printing, spin coating, for fabricating thin layer, method in...

Flexible electronic circuits when integrated with different sensors to mimic the human skin can be referred as E-skin. E-skin used for monitoring of health, human-machine interface and humanoids. To skin, a variety have been studied, including those sensitive pressures, temperatures, flows, strain humidity levels. Herein, we demonstrate multifunctional sensor encompassed in single pixel which is inspired by skin. The proposed device contains pressure sensor, temperature piezoresistive...

Abstract A suture is a ubiquitous medical device to hold wounded tissues together and support the healing process after surgery. Surgical sutures, having incomplete biocompatibility, often cause unwanted infections or serious secondary trauma soft fragile tissue. In this research, UV/ozone (UVO) irradiation polystyrene sulfonate acid (PSS) dip‐coating used achieve fibronectin (FN)‐coated absorbable system, in which negatively charged moieties produced on change from soluble plasma form into...

Paper-based digital microfluidic biochips (P-DMFBs) have recently emerged as a promising low-cost and fast-responsive platform for biochemical assays. In P-DMFBs, electrodes control lines are printed on piece of photo paper using inkjet printer conductive ink carbon nanotubes (CNTs). Compared with traditional (DMFBs), P-DMFBs enjoy notable advantages, such faster in-place fabrication ink, lower costs, better disposability, etc. Because CNT the same side paper, new design challenge P-DMFB is...

A simple programmable contact printing method using ballpoint pens with silver nanoparticle (AgNP) and carbon nanotube (CNT) ink a digital plotter were developed for quick patterning of electrodes on paper. This enables sequential two different inks consisting high viscosity materials is amenable to reproducibility printed customized designs. With this method, AgNP CNT patterns low electrical resistance density the material can be printed. Using these inks, we fabricated disposable...

A spoof fingerprint was fabricated on paper and applied for a spoofing attack to unlock smartphone which capacitive array of sensors had been embedded with recognition algorithm. Using an inkjet printer ink made carbon nanotubes (CNTs), we printed having electrical geometric pattern ridges furrows comparable that the real fingerprint. With this fingerprint, were able successfully; due good quality CNT material, provided conductivities structural patterns similar those This result confirms...

We present a study on the initial wetting behaviors of two low molecular weight alkanes, heptane and octane, at vapor/water interface using both neutron X-ray reflectometry. Combined reflectivity studies data showed that uniform film, which has never been reported, was formed continuously 25 °C. As adsorptive deposition continued, each adsorbed film saturated specific equilibrium thickness: 48 36 Å for deuterated respectively, 21 hydrogenated octane. The thickness layer measured by is in...

A significant amount of polystyrene sulfonated acid (PSSA) and poly(styrene-ran-acrylic acid) (PSAA) random copolymer can be adsorbed by dispersion PS particles via a swelling-quenching process. THF-water mixed solvent was used in the swelling process large pure water used, to give low concentration THF% quenching Our results showed that functional PSSA groups were randomly tightly particles. When mol.% charged segments increased, progressive adsorption chains leads an increase...

Paper-based digital microfluidic biochips (P-DMFBs) have recently emerged as a promising low-cost and fast-responsive platform for biochemical assays. In P-DMFBs, electrodes control lines are printed on piece of photograph paper using an inkjet printer carbon nanotubes (CNTs) conductive ink. Compared with traditional (DMFBs), P-DMFBs enjoy significant advantages, such faster in-place fabrication ink, lower costs, better disposability. Since CNT the same side this paper, critical design...

Abstract Collagen is a complex, large protein molecule that presents challenge in delivering it to the skin due its size and intricate structure. However, conventional collagen delivery methods are either invasive or may affect protein's structural integrity. This study introduces novel approach involving encapsulation of monomers within zwitterionic nanoliposomes, termed Lip‐Cols, controlled formation fibrils through electric fields (EF) stimulation. The results reveal self‐assembly process...

Abstract Paper-based analytical devices are a strong candidate for development due to the global need accurate, easy-to-use, and cost-effective tools. Paper offers potential as substrate biomedical diagnostic devices, but on its own it is limited in versatility. By combining paper with hydrogel, researchers able improve automation, sensitivity, affordability, flexibility, speed. Hydrogel, highly biocompatible material, enhances fluid flow control biocompatibility of functional interaction...

The cervical spine is a less common site for metastatic disease than the thoracolumbar spine. Percutaneous vertebroplasty (PVP) in can be performed using an anteromedial or lateral approach. A 51-year-old woman with breast cancer had been experiencing severe weight-bearing neck pain 2 months, even after undergoing radiation therapy. Imaging studies revealed osteolytic compression fracture C7 vertebra. For performing PVP at approach, needle was inserted from left side of patient's neck....