Graphene-Like Based-Chemiresistors Inkjet-Printed onto Paper Substrate

2019 ◽  
pp. 337-343 ◽  
Author(s):  
F. Villani ◽  
F. Loffredo ◽  
Brigida Alfano ◽  
Maria Lucia Miglietta ◽  
L. Verdoliva ◽  
...  
Keyword(s):  
Paper Substrate

Dual Band Paper Substrate CPW Antenna for Wireless Applications

2019 ◽  
Vol 8 (9S3) ◽  
pp. 605-608
Keyword(s):  
Reflection Coefficient ◽  
Mobile Communication ◽  
Coplanar Waveguide ◽  
Dual Band ◽  
Antenna Feed ◽  
Paper Substrate ◽  
Frequency Bands ◽  
Wireless Applications

In this paper, a 15* 80 sized antenna is designed over a paper substrate to test its flexible properties. The proposed antenna feed by a grounded coplanar waveguide(GCPW) is stimulated and the measured results show the operating Dual Band of the antenna cover(3.34-3.62 GHz) and (5.92-6.24 GHz) with the reflection coefficient |S11|< -15dB.These frequency bands operate over SHF bands and hence supports Fixed Mobile Communication and WLAN applications.

scholarly journals A KBr-impregnated paper substrate as a sample probe for the enhanced ATR-FTIR signal strength of anionic and non-ionic surfactants in an aqueous medium

RSC Advances ◽  
2020 ◽  
Vol 10 (66) ◽  
pp. 40428-40441
Author(s):  
Ramsingh Kurrey ◽  
Manas Kanti Deb ◽  
Kamlesh Shrivas ◽  
Jayant Nirmalkar ◽  
Bhupendra Kumar Sen ◽  
...  
Keyword(s):  
Aqueous Medium ◽  
Signal Strength ◽  
Flow Diagram ◽  
Ionic Surfactants ◽  
Paper Substrate

Flow diagram of the procedures for the analysis of surfactants using modified GFF paper substrate.

scholarly journals Flow Control in Porous Media: From Numerical Analysis to Quantitative μPAD for Ionic Strength Measurements

Sensors ◽  
2021 ◽  
Vol 21 (10) ◽  
pp. 3328
Author(s):  
Pouya Mehrdel ◽  
Hamid Khosravi ◽  
Shadi Karimi ◽  
Joan Antoni López Martínez ◽  
Jasmina Casals-Terré
Keyword(s):  
Porous Media ◽  
Limit Of Detection ◽  
Fluid Dynamic ◽  
Porous Membrane ◽  
External Pressure ◽  
Paper Substrate ◽  
Sensor Performance ◽  
Food Applications ◽  
Substrate Nature

Microfluidic paper-based analytical devices (µPADs) are a promising technology to enable accurate and quantitative in situ assays. Paper’s inherent hydrophilicity drives the fluids without the need for external pressure sources. However, controlling the flow in the porous medium has remained a challenge. This study addresses this problem from the nature of the paper substrate and its design. A computational fluid dynamic model has been developed, which couples the characteristics of the porous media (fiber length, fiber diameter and porosity) to the fluidic performance of the diffusion-based µPAD sensor. The numerical results showed that for a given porous membrane, the diffusion, and therefore the sensor performance is affected not only by the substrate nature but also by the inlets’ orientation. Given a porous substrate, the optimum performance is achieved by the lowest inlets’ angle. A diffusion-based self-referencing colorimetric sensor was built and validated according to the design. The device is able to quantify the hydronium concentration in wines by comparison to 0.1–1.0 M tartaric acid solutions with a 41.3 mM limit of detection. This research showed that by proper adjustments even the simplest µPADs can be used in quantitative assays for agri-food applications.

A novel glass-fiber-aided cold-press method for fabrication of n-type Ag2Te nanowires thermoelectric film on flexible copy-paper substrate

2017 ◽  
Vol 5 (47) ◽  
pp. 24740-24748 ◽  
Author(s):  
Jie Gao ◽  
Lei Miao ◽  
Chengyan Liu ◽  
Xiaoyang Wang ◽  
Ying Peng ◽  
...  
Keyword(s):  
Glass Fiber ◽  
Paper Substrate ◽  
Cold Press ◽  
Press Method

A novel glass-fiber aided cold-press method for achieving n-type Ag2Te nanowires film on a flexible copy paper substrate.

Low-Loss Paper Substrate for Printed High Efficiency Antennas at 2.45 GHz

2015 ◽  
Vol 14 ◽  
pp. 1400-1403 ◽  
Author(s):  
I. Kharrat ◽  
P. Xavier ◽  
T.-P. Vuong ◽  
J.-M. Duchamp ◽  
Ph. Benech ◽  
...  
Keyword(s):  
High Efficiency ◽  
Low Loss ◽  
Paper Substrate

scholarly journals Performance analysis of a ultra-compact low-power rectenna in paper substrate for RF energy harvesting

2017 ◽  
Author(s):  
V. Palazzi ◽  
C. Kalialakis ◽  
F. Alimenti ◽  
P. Mezzanotte ◽  
L. Roselli ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Energy Harvesting ◽  
Low Power ◽  
Paper Substrate ◽  
Rf Energy Harvesting ◽  
Rf Energy

scholarly journals Fabrication of Porous Silicon Based Humidity Sensing Elements on Paper

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Tero Jalkanen ◽  
Anni Määttänen ◽  
Ermei Mäkilä ◽  
Jaani Tuura ◽  
Martti Kaasalainen ◽  
...  
Keyword(s):  
Porous Silicon ◽  
Smart Cities ◽  
Low Cost ◽  
Electrical Characterization ◽  
Fabrication Process ◽  
Sensing Element ◽  
Paper Substrate ◽  
Roll To Roll ◽  
Silver Electrodes ◽  
Silicon Based

A roll-to-roll compatible fabrication process of porous silicon (pSi) based sensing elements for a real-time humidity monitoring is described. The sensing elements, consisting of printed interdigitated silver electrodes and a spray-coated pSi layer, were fabricated on a coated paper substrate by a two-step process. Capacitive and resistive responses of the sensing elements were examined under different concentrations of humidity. More than a three orders of magnitude reproducible decrease in resistance was measured when the relative humidity (RH) was increased from 0% to 90%. A relatively fast recovery without the need of any refreshing methods was observed with a change in RH. Humidity background signal and hysteresis arising from the paper substrate were dependent on the thickness of sensing pSi layer. Hysteresis in most optimal sensing element setup (a thick pSi layer) was still noticeable but not detrimental for the sensing. In addition to electrical characterization of sensing elements, thermal degradation and moisture adsorption properties of the paper substrate were examined in connection to the fabrication process of the silver electrodes and the moisture sensitivity of the paper. The results pave the way towards the development of low-cost humidity sensors which could be utilized, for example, in smart packaging applications or in smart cities to monitor the environment.

Performance evaluation of a dual band paper substrate wireless sensor networks antenna over curvilinear surfaces

2015 ◽  
Vol 9 (8) ◽  
pp. 715-722 ◽  
Author(s):  
Jayaram Kizhekke Pakkathillam ◽  
Malathi Kanagasabai
Keyword(s):  
Wireless Sensor Networks ◽  
Performance Evaluation ◽  
Sensor Networks ◽  
Wireless Sensor ◽  
Dual Band ◽  
Paper Substrate

Catalyst Coated Paper Substrate Strategy: Development and Its Application for Copper-Catalysts Screening and Activity Studies

2016 ◽  
Vol 1 (12) ◽  
pp. 3297-3305 ◽  
Author(s):  
Xuan Wang ◽  
Yajun Zheng ◽  
Teng Wang ◽  
Haijun Yang ◽  
Zongquan Bai ◽  
...  
Keyword(s):  
Copper Catalysts ◽  
Strategy Development ◽  
Paper Substrate ◽  
Coated Paper

Direct Writing on Paper Substrate to Prepare Silver Electrode Structures for Flexible Sensors

2021 ◽  
Vol 21 (12) ◽  
pp. 6048-6053
Author(s):  
Qi Wang ◽  
Mingwei Li ◽  
Yao Xie ◽  
Yun Ou ◽  
Weiping Zhou
Keyword(s):  
Low Cost ◽  
Rapid Development ◽  
Silver Electrode ◽  
Silver Nanostructures ◽  
Direct Writing ◽  
Paper Substrate ◽  
Electronic Products ◽  
Glass Substrates ◽  
Different Temperatures ◽  
Writing Technology

With the rapid development of the electronics industry, electronic products based on silicon and glass substrates electronic products will gradually be unable to meet the rising demand. Flexibility, environmental protection, and low costs are important for the development of electronic products. In this study, an efficient and low-cost method for preparing silver electrode structures by direct writing on paper has been demonstrated. Based on this method, a flexible paper-based sensor was prepared. The liquid printing ink used mainly comprises a precursor liquid without pre-prepared nanomaterials. The precursor liquid is transparent with good fluidity. Simple direct writing technology was used to write on the paper substrate using the precursor ink. When the direct-writing paper substrate was subsequently heated, silver nanostructures precipitated from the precursor liquid ink onto the paper substrate. The effect of different temperatures on the formation of the silver nanostructures and the influence of different direct writing processes on the structures were studied. Finally, a paper-based flexible sensor was prepared for finger-bending signal detection. The method is simple to operate and low in cost and can be used for the preparation of environment-friendly paper-based devices.

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