A highly sensitive printed humidity sensor based on a functionalized MWCNT/HEC composite for flexible electronics application

Turkani, Vikram S.; Maddipatla, Dinesh; Narakathu, Binu B.; Saeed, Tahseen S.; Obare, Sherine O.; Bazuin, Bradley J.; Atashbar, Massood Z.

doi:10.1039/c9na00179d

Cited by 80 publications

(41 citation statements)

References 62 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…6, the resistance quickly rises upon change of the relative humidity, and returns to initial resistance when placed at ambient relative humidity. The response time achieved was similar to other humidity sensors based on carbon nanotubes [23]. The change is resistance was 2.6% when the humidity changed from 60 to 88%, or 0.093%/%RH.…”

Section: Inkjet Printing Of Humidity Sensorsupporting

confidence: 79%

Low-cost and customizable inkjet printing for microelectrodes fabrication

Costa

Choi

2020

Micro and Nano Syst Lett

View full text Add to dashboard Cite

Microelectrodes for detection of chemicals present several advantages over conventional sized electrodes. However, rapid and low-cost fabrication of microelectrodes is challenging due to high complexity of patterning equipment. We present the development of a low-cost, customizable inkjet printer for printing nanomaterials including carbon nanotubes for the fabrication of microelectrodes. The achieved spatial resolution of the inkjet printer is less than 20 µm, which is comparable to advanced commercially available inkjet printers, with the advantage of being low-cost and easily replicated.

show abstract

Section: Inkjet Printing Of Humidity Sensorsupporting

confidence: 79%

Low-cost and customizable inkjet printing for microelectrodes fabrication

Costa

Choi

2020

Micro and Nano Syst Lett

View full text Add to dashboard Cite

show abstract

“…Material selection is of vital importance in sensor performance; conductive electrodes can be printed with Ag [ 11 , 13 , 14 , 15 , 16 ] or PEDOT:PSS [ 17 ] and flexible substrates utilized can be PI (Kapton) [ 10 , 14 , 15 , 18 , 19 ], PET [ 16 , 20 , 21 , 22 ], polyester-based [ 23 , 24 ], paper [ 12 , 17 ]; or rigid, such as glass [ 25 ] or ceramic [ 26 ]; this is directly correlated to the printing technique. A hybrid approach has been proposed by numerous research groups, where the conductive electrodes are not printed but traditionally patterned and the sensing layer is printed on top [ 19 , 26 , 27 , 28 ].…”

Section: Printed Humidity Sensorsmentioning

confidence: 99%

“…A humidity-sensitive carbon nanotube (CNT) film was deposited via gravure printing on a set of screen-printed Ag electrodes [ 16 ] for successfully measuring relative humidity in the range 20 to 80% RH. Gravure printing was also utilized for depositing a functionalized multi-walled carbon nanotube (FMWCNTs)/hydroxyethyl cellulose (HEC) composite onto screen printed electrodes [ 21 ] ( Figure 7 a). This composite relies on two mechanisms for enhanced sensor response: on the one hand FMWCNTs, demonstrating p-type semiconductor characteristics, exhibit an increase in resistance driven by transfer of more electrons, due to adsorption via physisorption.…”

Section: Printed Humidity Sensorsmentioning

confidence: 99%

A Review on Humidity, Temperature and Strain Printed Sensors—Current Trends and Future Perspectives

Barmpakos

Kaltsas

2021

Sensors

View full text Add to dashboard Cite

Printing technologies have been attracting increasing interest in the manufacture of electronic devices and sensors. They offer a unique set of advantages such as additive material deposition and low to no material waste, digitally-controlled design and printing, elimination of multiple steps for device manufacturing, wide material compatibility and large scale production to name but a few. Some of the most popular and interesting sensors are relative humidity, temperature and strain sensors. In that regard, this review analyzes the utilization and involvement of printing technologies for full or partial sensor manufacturing; production methods, material selection, sensing mechanisms and performance comparison are presented for each category, while grouping of sensor sub-categories is performed in all applicable cases. A key aim of this review is to provide a reference for sensor designers regarding all the aforementioned parameters, by highlighting strengths and weaknesses for different approaches in printed humidity, temperature and strain sensor manufacturing with printing technologies.

show abstract

“…A great deal of research has been devoted to wearable sensors capable of detecting humidity changes . rGO fibers have been developed as highly sensitive humidity sensors .…”

Section: Applicationsmentioning

confidence: 99%

Fabrication and Patterning Methods of Flexible Sensors Using Carbon Nanomaterials on Polymers

Costa

Choi

2020

Advanced Intelligent Systems

View full text Add to dashboard Cite

Flexible sensors composed of carbon nanostructures and elastic materials have been developed for healthcare monitoring, environmental monitoring, disposable biochemical or electrochemical sensors, and many other applications. Fabrication approaches for such sensors and their advantages and current issues related to patterning high-performance flexible sensors are reviewed. A focus is placed on patterning techniques for carbon-based flexible sensors including carbon nanotubes, graphene, and other carbon nanostructures. First, novel patterning techniques for nanomaterials are described, along with their current challenges. Next, emerging flexible sensors including humidity, temperature, strain, and pressure sensors are discussed. Finally, the challenges and perspectives for flexible sensors are addressed. REVIEW www.advintellsyst.com

show abstract

A highly sensitive printed humidity sensor based on a functionalized MWCNT/HEC composite for flexible electronics application

Abstract: Fully printed, functionalized multi-walled carbon nanotube (FMWCNT)/hydroxyethyl cellulose (HEC) composite-based humidity sensor.

Cited by 80 publications

References 62 publications

Low-cost and customizable inkjet printing for microelectrodes fabrication

Low-cost and customizable inkjet printing for microelectrodes fabrication

A Review on Humidity, Temperature and Strain Printed Sensors—Current Trends and Future Perspectives

Fabrication and Patterning Methods of Flexible Sensors Using Carbon Nanomaterials on Polymers

Contact Info

Product

Resources

About