scholarly journals Rapid prototyping of a novel and flexible paper based oxygen sensing patch via additive inkjet printing process

RSC Advances ◽  
2019 ◽  
Vol 9 (39) ◽  
pp. 22695-22704 ◽  
Author(s):  
Dinesh Maddipatla ◽  
Binu B. Narakathu ◽  
Manuel Ochoa ◽  
Rahim Rahimi ◽  
Jiawei Zhou ◽  
...  
Keyword(s):  
Rapid Prototyping ◽  
Inkjet Printing ◽  
Manufacturing Process ◽  
Biomedical Applications ◽  
Food Packaging ◽  
Oxygen Sensing ◽  
Low Cost ◽  
Printing Process ◽  
Cost Efficient ◽  
First Time

A paper-based low cost and rapid prototypable flexible oxygen sensing patch was developed for the first time using a cost-efficient additive inkjet print manufacturing process for wearable, food packaging, pharmaceutical and biomedical applications.

Printing ultrathin graphene oxide nanofiltration membranes for water purification

2017 ◽  
Vol 5 (39) ◽  
pp. 20860-20866 ◽  
Author(s):  
Mahdi Fathizadeh ◽  
Huynh Ngoc Tien ◽  
Konstantin Khivantsev ◽  
Jung-Tsai Chen ◽  
Miao Yu
Keyword(s):  
Graphene Oxide ◽  
Water Purification ◽  
Inkjet Printing ◽  
Low Cost ◽  
Nanofiltration Membranes ◽  
Highly Effective ◽  
First Time ◽  
Polymeric Supports ◽  
Effective Water

We demonstrated for the first time that inkjet printing can be a low-cost, easy, fast, and scalable method for depositing ultrathin (7.5–60 nm) uniform graphene oxide (GO) nanofiltration membranes on polymeric supports for highly effective water purification.

scholarly journals Cost-Effective Fabrication, Antibacterial Application and Cell Viability Studies of Modified Nonwoven Cotton Fabric

2021 ◽  
Author(s):  
Rahat Nawaz ◽  
Sayed Tayyab Raza Naqvi ◽  
Batool Fatima ◽  
Nazia Zulfiqar ◽  
Muhammad Umer Farooq ◽  
...  
Keyword(s):  
Cotton Fabric ◽  
Biomedical Applications ◽  
Active Sites ◽  
Food Packaging ◽  
Low Cost ◽  
Bacterial Species ◽  
Enterobacter Aerogenes ◽  
Cost Effective ◽  
Bacterial Strains ◽  
Toxicity Assay

Abstract Nonwoven cotton fabric has been fabricated and designed for antibacterial applications using low cost and ecofriendly precursors. The treatment of fabric with alkali leads to formation of active sites. The surfaces were dip coated with silver nanaoparticles and chitosan. The surface was chlorinated in next step to transform amide (N-H) groups in chitosan into N-halamine (N-Cl). The modified and unmodified surfaces of the nonwoven cotton fabric have been characterized by FTIR, SEM, and XRD. The active chlorine loading is measured with iodine/ sodium thiosulphate. The antimicrobial activity and cell toxicity assay were carried out with and without modifications of nonwoven cotton fabric. The antimicrobial efficacies of loaded fabric were evaluated against four bacterial species (Micrococcus lutes, Staphylococcus aurea, Enterobacter aerogenes, and E.coli). It was found that modified fabric exhibited superior efficiency against gram-positive and gram-negative bacterial strains as compared to their bulk counterparts upon exposure without destroying and affecting fabric nature. The overall process is economical for commercial purposes. The modified fabric can be used for antimicrobial, health, and food packaging industries, and in other biomedical applications.

scholarly journals Recent advances in nonbiofouling PDMS surface modification strategies applicable to microfluidic technology

TECHNOLOGY ◽  
2017 ◽  
Vol 05 (01) ◽  
pp. 1-12 ◽  
Author(s):  
Aslihan Gokaltun ◽  
Martin L. Yarmush ◽  
Ayse Asatekin ◽  
O. Berk Usta
Keyword(s):  
Rapid Prototyping ◽  
Biomedical Applications ◽  
Gas Permeability ◽  
Low Cost ◽  
Microfluidic Devices ◽  
Mature Stage ◽  
Major Drawback ◽  
Pdms Surface ◽  
Recent Advances ◽  
Hydrophobic Recovery

In the last decade microfabrication processes including rapid prototyping techniques have advanced rapidly and achieved a fairly mature stage. These advances have encouraged and enabled the use of microfluidic devices by a wider range of users with applications in biological separations and cell and organoid cultures. Accordingly, a significant current challenge in the field is controlling biomolecular interactions at interfaces and the development of novel biomaterials to satisfy the unique needs of the biomedical applications. Poly(dimethylsiloxane) (PDMS) is one of the most widely used materials in the fabrication of microfluidic devices. The popularity of this material is the result of its low cost, simple fabrication allowing rapid prototyping, high optical transparency, and gas permeability. However, a major drawback of PDMS is its hydrophobicity and fast hydrophobic recovery after surface hydrophilization. This results in significant nonspecific adsorption of proteins as well as small hydrophobic molecules such as therapeutic drugs limiting the utility of PDMS in biomedical microfluidic circuitry. Accordingly, here, we focus on recent advances in surface molecular treatments to prevent fouling of PDMS surfaces towards improving its utility and expanding its use cases in biomedical applications.

Low-cost and rapid prototyping of microfluidic paper-based analytical devices by inkjet printing of permanent marker ink

RSC Advances ◽  
2015 ◽  
Vol 5 (7) ◽  
pp. 4770-4773 ◽  
Author(s):  
Chunxiu Xu ◽  
Longfei Cai ◽  
Minghua Zhong ◽  
Shuyue Zheng
Keyword(s):  
Rapid Prototyping ◽  
Inkjet Printing ◽  
Filter Paper ◽  
Low Cost

μPADS were fabricated by inkjet printing of permanent marker ink on filter paper, followed by evaporation of solvent.

scholarly journals Efficient Inkjet Printing of Graphene-Based Elements: Influence of Dispersing Agent on Ink Viscosity

Nanomaterials ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 602 ◽  
Author(s):  
Lucja Dybowska-Sarapuk ◽  
Konrad Kielbasinski ◽  
Aneta Arazna ◽  
Konrad Futera ◽  
Andrzej Skalski ◽  
...  
Keyword(s):  
Inkjet Printing ◽  
Low Cost ◽  
Process Window ◽  
Attractive Alternative ◽  
Printing Process ◽  
Microelectronic Devices ◽  
Dispersing Agent ◽  
Printing Technique ◽  
Different Strains ◽  
Lower Resistivity

Inkjet printing is an excellent printing technique and an attractive alternative to conventional technologies for the production of flexible, low-cost microelectronic devices. Among many parameters that have a significant impact on the correctness of the printing process, the most important is ink viscosity. During the printing process, the ink is influenced by different strains and forces, which significantly change the printing results. The authors present a model and calculations referring to the shear rate of ink in an inkjet printer nozzle. Supporting experiments were conducted, proving the model assumptions for two different ink formulations: initial ink and with the addition of a dispersing agent. The most important findings are summarized by the process window regime of parameters, which is much broader for the inks with a dispersing agent. Such inks exhibit preferable viscosity, better print-ability, and higher path quality with lower resistivity. Presented results allow stating that proper, stable graphene inks adjusted for inkjet technique rheology must contain modifiers such as dispersing agents to be effectively printed.

scholarly journals Photocatalytic Activity of Twist-Angle Stacked 2D TaS2

2021 ◽  
Author(s):  
Evgeniya Kovalska ◽  
Pradip Kumar Roy ◽  
Nikolas Antonatos ◽  
Vlastimil Mazanek ◽  
Martin Vesely ◽  
...  
Keyword(s):  
Hydrogen Generation ◽  
Low Cost ◽  
Twist Angle ◽  
Light Illumination ◽  
Interlayer Interaction ◽  
Electrochemical Exfoliation ◽  
Light Sensing ◽  
Cost Efficient ◽  
The Individual ◽  
First Time

The development of low-cost efficient photoelectrosensitive electrodes as an alternative to the expensive and complex rigid systems is yet in huge demand for advanced photoresponsive technology. Herein, the light-induced efficiency of electrochemically exfoliated TaS2 nanosheets for hydrogen generation catalysis and photodetectors has been demonstrated for the first time. The electrochemical exfoliation of TaS2 crystals toward a few-layer derivative has been pioneered in anhydrous tetrabutylammonium hexafluorophosphate in N, N-dimethylformamide. Comprehensive analysis of as-exfoliated TaS2 revealed the formation of nanoparticles and nanosheets with a lateral size of about several nanometers and micrometers, correspondingly. Observed mutual twisting of 2H-TaS2 flakes leads to the redistribution of charge density induced by interlayer interaction of the individual nanosheets. External light irradiation on the TaS2 surface influences its conductivity making the material feasible for photoelectrocatalysis and photodetection. The TaS2-based catalyst demonstrates high HER photoelectrocatalytic activity with the onset overpotential below 575 mV vs. RHE which can be lowered by thorough catalyst preparation. Finally, the TaS2-integrated photodetector in the acidic medium represents its broadband light sensing capability with the highest photoresponsivity (0.68 mA W-1 ) toward 420 nm light illumination. This finding will pave the way to a new realization of exfoliated twist-angle stacked TaS2 for photo-induced electrochemistry and sensing

scholarly journals Photocatalytic Activity of Twist-Angle Stacked 2D TaS2

2021 ◽  
Author(s):  
Evgeniya Kovalska ◽  
Pradip Kumar Roy ◽  
Nikolas Antonatos ◽  
Vlastimil Mazanek ◽  
Martin Vesely ◽  
...  
Keyword(s):  
Hydrogen Generation ◽  
Low Cost ◽  
Twist Angle ◽  
Light Illumination ◽  
Interlayer Interaction ◽  
Electrochemical Exfoliation ◽  
Light Sensing ◽  
Cost Efficient ◽  
The Individual ◽  
First Time

The development of low-cost efficient photoelectrosensitive electrodes as an alternative to the expensive and complex rigid systems is yet in huge demand for advanced photoresponsive technology. Herein, the light-induced efficiency of electrochemically exfoliated TaS2 nanosheets for hydrogen generation catalysis and photodetectors has been demonstrated for the first time. The electrochemical exfoliation of TaS2 crystals toward a few-layer derivative has been pioneered in anhydrous tetrabutylammonium hexafluorophosphate in N, N-dimethylformamide. Comprehensive analysis of as-exfoliated TaS2 revealed the formation of nanoparticles and nanosheets with a lateral size of about several nanometers and micrometers, correspondingly. Observed mutual twisting of 2H-TaS2 flakes leads to the redistribution of charge density induced by interlayer interaction of the individual nanosheets. External light irradiation on the TaS2 surface influences its conductivity making the material feasible for photoelectrocatalysis and photodetection. The TaS2-based catalyst demonstrates high HER photoelectrocatalytic activity with the onset overpotential below 575 mV vs. RHE which can be lowered by thorough catalyst preparation. Finally, the TaS2-integrated photodetector in the acidic medium represents its broadband light sensing capability with the highest photoresponsivity (0.68 mA W-1 ) toward 420 nm light illumination. This finding will pave the way to a new realization of exfoliated twist-angle stacked TaS2 for photo-induced electrochemistry and sensing

scholarly journals Low-Cost Inkjet Printing Technology for the Rapid Prototyping of Transducers

Sensors ◽  
2017 ◽  
Vol 17 (4) ◽  
pp. 748 ◽  
Author(s):  
Bruno Andò ◽  
Salvatore Baglio ◽  
Adi Bulsara ◽  
Teresa Emery ◽  
Vincenzo Marletta ◽  
...  
Keyword(s):  
Rapid Prototyping ◽  
Inkjet Printing ◽  
Low Cost ◽  
Printing Technology ◽  
Inkjet Printing Technology

Synthesis of Value Added Nanoparticles from Biomass Resources

2021 ◽  
Vol 25 (11) ◽  
pp. 175-183
Author(s):  
Gobinda Prasad Chutia
Keyword(s):  
Biomedical Applications ◽  
Food Packaging ◽  
Low Cost ◽  
Value Added ◽  
Green Energy ◽  
Practical Applications ◽  
Biomass Resources ◽  
Biomass Materials ◽  
Biological Methods ◽  
Potential Use

The utilization of sustainable biomass materials provides a versatile route for the development of new alternatives to replace traditional petro-materials for a variety of purposes such as green energy, paint, food packaging and biomedical applications. This study reviews the potential use of various sustainable biomass materials for the production of low-cost, highvalue- added materials for practical applications including bio-printing, drug delivery/controlled release, tissue engineering, energy storage and biosensing. This study highlights the fabrication of novel nanomaterials from various biowastes including crop residue, food waste and industrial waste (e.g. spent battery waste and polythene waste) through physical, chemical, or biological methods.

scholarly journals Enhancement of High-Resolution 3D Inkjet-Printing of Optical Freeform Surfaces Using Digital Twins

Micromachines ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 35
Author(s):  
Ingo Sieber ◽  
Richard Thelen ◽  
Ulrich Gengenbach
Keyword(s):  
Sensitivity Analysis ◽  
Inkjet Printing ◽  
Optical Model ◽  
Measurement Data ◽  
Optical Power ◽  
Printing Process ◽  
Digital Twins ◽  
Optical Freeform Surfaces ◽  
Cost Efficient ◽  
Nominal Performance

3D-inkjet-printing is just beginning to take off in the optical field. Advantages of this technique include its fast and cost-efficient fabrication without tooling costs. However, there are still obstacles preventing 3D inkjet-printing from a broad usage in optics, e.g., insufficient form fidelity. In this article, we present the formulation of a digital twin by the enhancement of an optical model by integrating geometrical measurement data. This approach strengthens the high-precision 3D printing process to fulfil optical precision requirements. A process flow between the design of freeform components, fabrication by inkjet printing, the geometrical measurement of the fabricated optical surface, and the feedback of the measurement data into the simulation model was developed, and its interfaces were defined. The evaluation of the measurements allowed for the adaptation of the printing process to compensate for process errors and tolerances. Furthermore, the performance of the manufactured component was simulated and compared with the nominal performance, and the enhanced model could be used for sensitivity analysis. The method was applied to a highly complex helical surface that allowed for the adjustment of the optical power by rotation. We show that sensitivity analysis could be used to define acceptable tolerance budgets of the process.

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