Printed graphene interdigitated capacitive sensors on flexible polyimide substrates

Sinar, Dogan; Knopf, George K.

doi:10.1109/nano.2014.6968041

Cited by 16 publications

(10 citation statements)

References 11 publications

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“…Ma and Tsukruk demonstrated a flexible GO-silk-based chemiresistive sensor, which showed a fast response time of 3 s, high sensitivity to humidity in the 20–97% RH range, and good stability to thousands of folding-unfolding cycles and chemical solvents . Knopf and co-workers printed graphene interdigitated capacitive (IDC) sensors on the flexible polyimide substrates . As the total capacitance of the IDC sensor is determined by multiplying each unit cell capacitance, interdigitated configuration can increase the effective capacitance of the structure and the effective active area of the sensor.…”

Section: Sensing Applicationsmentioning

confidence: 99%

Electrically-Transduced Chemical Sensors Based on Two-Dimensional Nanomaterials

et al. 2019

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Electrically−transduced sensors, with their simplicity and compatibility with standard electronic technologies, produce signals that can be efficiently acquired, processed, stored, and analyzed. Two dimensional (2D) nanomaterials, including graphene, phosphorene (BP), transition metal dichalcogenides (TMDCs), and others, have proven to be attractive for the fabrication of high−performance electricallytransduced chemical sensors due to their remarkable electronic and physical properties originating from their 2D structure. This review highlights the advances in electricallytransduced chemical sensing that rely on 2D materials. The structural components of such sensors are described, and the underlying operating principles for different types of architectures are discussed. The structural features, electronic properties, and surface chemistry of 2D nanostructures that dictate their sensing performance are reviewed. Key advances in the application of 2D materials, from both a historical and analytical perspective, are summarized for four different groups of analytes: gases, volatile compounds, ions, and biomolecules. The sensing performance is discussed in the context of the molecular design, structure−property relationships, and device fabrication technology. The outlook of challenges and opportunities for 2D nanomaterials for the future development of electrically-transduced sensors is also presented.

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Section: Sensing Applicationsmentioning

confidence: 99%

Electrically-Transduced Chemical Sensors Based on Two-Dimensional Nanomaterials

et al. 2019

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“…Finally, the inkjet-printed low pass filters were tested under mechanical stress. Inkjet-printed G-CMC films have already been shown to exhibit excellent flexibility under mechanical stress [ 19 , 21 ]. Shape conformable and wearable electronics should not only perform under mechanical stress but also behave in predictable fashion.…”

Section: Resultsmentioning

confidence: 99%

“…Both poor wetting and CRE can be addressed by choosing the correct solvent. Hence, a binary solvent system was proposed previously [ 19 ] where low rate of change in surface tension of binary system during evaporation can keep edge directed Marangoni flow under control. N-Propanol/water binary system has a relatively stable surface tension profile between 20% m/m to 100% m/m N-Propanol.…”

Section: Methodsmentioning

confidence: 99%

“…CMC is also known to decompose efficiently under thermal treatment [ 18 ] which can facilitate its partial removal from deposited films and improve the electrical properties of thin films. Preliminary experiments have shown that the proposed G-CMC ink could be used to fabricate interdigitated capacitors (IDCs) and resistors on mechanically flexible polyimide [ 19 ]. Although the fabrication of individual passive components—such as electrodes, inductors, resistors ( R ) and capacitors ( C )—is an important step, a deeper understanding of the combined response behavior of several interconnected components is essential for designing more complex inkjet-printed devices.…”

Section: Introductionmentioning

confidence: 99%

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Printed Graphene Derivative Circuits as Passive Electrical Filters

Sinar

Knopf

2018

Nanomaterials

Self Cite

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The objective of this study is to inkjet print resistor-capacitor (RC) low pass electrical filters, using a novel water-based cellulose graphene ink, and compare the voltage-frequency and transient behavior to equivalent circuits constructed from discrete passive components. The synthesized non-toxic graphene-carboxymethyl cellulose (G-CMC) ink is deposited on mechanically flexible polyimide substrates using a customized printer that dispenses functionalized aqueous solutions. The design of the printed first-order and second-order low-pass RC filters incorporate resistive traces and interdigitated capacitors. Low pass filter characteristics, such as time constant, cut-off frequency and roll-off rate, are determined for comparative analysis. Experiments demonstrate that for low frequency applications (<100 kHz) the printed graphene derivative circuits performed as well as the circuits constructed from discrete resistors and capacitors for both low pass filter and RC integrator applications. The impact of mechanical stress due to bending on the electrical performance of the flexible printed circuits is also investigated.

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“…Sinar and Knopf [137] fabricated extensively used Interdigitated capacitors (IDC) for a variety of chemical and biological sensing applications. They synthesized an electrically conductive aqueous graphene ink stabilized in deionized water using the polymer of a nontoxic hydrophilic food grade cellulose derivative carboxymethylcellulose (CMC).…”

Section: Carbohydrate Polymersmentioning

confidence: 99%

High-Performance Polymer Type Capacitors

İnan

2018

Materials Research Foundations

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This book chapter concentrates on energy storage applications of thin film containing electrochemical capacitors (supercapacitors) with specifically high-temperature polymers (fluorinated polymers, polyimides, polyarylenes, polyvinyl pyrollidone, etc.) for their good thermal and hydrolytic stability, excellent mechanical and chemical stability, low cost, flexibility and commercial availability. It consists of three main parts as given in the table of contents related to the 1) fluorinated high-performance polymers (FHPP) 2) nonfluorinated high-performance polymers (NFHPP) and 3) fluorinated and nonfluorinated high-performance polymers (FNFHPP) with their composites. A total of 141 literature reviewed references are cited.

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Printed graphene interdigitated capacitive sensors on flexible polyimide substrates

Cited by 16 publications

References 11 publications

Electrically-Transduced Chemical Sensors Based on Two-Dimensional Nanomaterials

Electrically-Transduced Chemical Sensors Based on Two-Dimensional Nanomaterials

Printed Graphene Derivative Circuits as Passive Electrical Filters

High-Performance Polymer Type Capacitors

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