All-printed humidity sensor based on graphene/methyl-red composite with high sensitivity

Ali, Shawkat; Hassan, Azman; Hassan, Gul; Bae, Jinho; Lee, Chong Hyun

doi:10.1016/j.carbon.2016.04.013

Cited by 140 publications

(83 citation statements)

References 51 publications

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“…There are several types of humidity sensors that include resistive [244,[470][471][472][473][474][475][476][477][478][479][480][481][482], capacitive [339,[483][484][485], piezoelectric [486,487], TFT [36], and fibre optic [468,488]. Relative Humidity (RH) is the percentage amount of water vapour in air with regard to the amount needed for saturation at a given temperature and gas pressure, and is the most commonly used term to indicate humidity level in air.…”

Section: Humidity Sensorsmentioning

confidence: 99%

“…Resistive humidity sensors are the most commonly fabricated humidity sensors and are generally fabricated using CB [471], CNTs [472][473][474][475][476], graphene [477][478][479][480], PMMA/poly-[3-(methacrylamino)propyl] trimethyl ammonium cloride (PMAPTAC) [470], SnO 2 / PANI [481], and organohydrogel [482]. A resistive humidity sensor showing a sensitivity of 0.0327 log Z/%RH over a relative humidity range of 10-90% RH was demonstrated [470].…”

Section: Resistive Humidity Sensorsmentioning

confidence: 99%

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Flexible Sensors—From Materials to Applications

et al. 2019

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Flexible sensors have the potential to be seamlessly applied to soft and irregularly shaped surfaces such as the human skin or textile fabrics. This benefits conformability dependant applications including smart tattoos, artificial skins and soft robotics. Consequently, materials and structures for innovative flexible sensors, as well as their integration into systems, continue to be in the spotlight of research. This review outlines the current state of flexible sensor technologies and the impact of material developments on this field. Special attention is given to strain, temperature, chemical, light and electropotential sensors, as well as their respective applications.

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Section: Humidity Sensorsmentioning

confidence: 99%

Section: Resistive Humidity Sensorsmentioning

confidence: 99%

Flexible Sensors—From Materials to Applications

et al. 2019

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“…The non-linear sensitivity of the reported sensors in the range from 15%-95%RH was 12.27 fF/%RH and 40.86 fF/%RH, for RH < 65% and RH > 65% respectively. Another sensitive layer used for the development of capacitive RH sensors is a graphene (G)/methyl-red (M-R) composite [124]. In this sensor, silver interdigitated electrodes were inkjet printed on PET and the sensitive composite was deposited over then by electrohydrodynamics.…”

Section: Relative Humidity Detectorsmentioning

confidence: 99%

Recent Advances in Printed Capacitive Sensors

Rivadeneyra

López‐Villanueva

2020

Micromachines

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In this review paper, we summarize the latest advances in the field of capacitive sensors fabricated by printing techniques. We first explain the main technologies used in printed electronics, pointing out their features and uses, and discuss their advantages and drawbacks. Then, we review the main types of capacitive sensors manufactured with different materials and techniques from physical to chemical detection, detailing the main substrates and additives utilized, as well as the measured ranges. The paper concludes with a short notice on status and perspectives in the field.

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“…In accordance with the electronic industry roadmap, the research in this field is slowly inching toward a merge of well-established microelectronics and the age-old printing technologies. Traditionally, prepatterned parts of a printing module are brought in conformal contact to the target flexible (nonflexible) substrates, resulting in the transfer of functional inks/solutions on target surfaces [15][16][17][18][19][20][21]. The mechanisms to transfer inks/solutions on target substrates divide printing technologies into two main streams, where the surfaces come in physical contact in one, and in the second approach, ink is deposited through noncontacting the surfaces.…”

Section: Introductionmentioning

confidence: 99%

Smart Manufacturing Technologies for Printed Electronics

Khan¹,

Ali²,

Bermak³

2020

Hybrid Nanomaterials - Flexible Electronics Materials

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Fabrication of electronic devices on different flexible substrates is an area of significant interest due to low cost, ease of fabrication, and manufacturing at ambient conditions over large areas. Over the time, a number of printing technologies have been developed to fabricate a wide range of electronic devices on nonconventional substrates according to the targeted applications. As an increasing interest of electronic industry in printed electronics, further expansion of printed technologies is expected in near future to meet the challenges of the field in terms of scalability, yield, and diversity and biocompatibility. This chapter presents a comprehensive review of various printing electronic technologies commonly used in the fabrication of electronic devices, circuits, and systems. The different printing techniques based on contact/noncontact approach of the printing tools with the target substrates have been explored. These techniques are assessed on the basis of ease of operation, printing resolutions, processability of materials, and ease of optimization of printed structures. The various technical challenges in printing techniques, their solutions with possible alternatives, and the potential research directions are highlighted. The latest developments in assembling various printing tools for enabling high speed and batch manufacturing through roll-to-roll systems are also explored.

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All-printed humidity sensor based on graphene/methyl-red composite with high sensitivity

Cited by 140 publications

References 51 publications

Flexible Sensors—From Materials to Applications

Flexible Sensors—From Materials to Applications

Recent Advances in Printed Capacitive Sensors

Smart Manufacturing Technologies for Printed Electronics

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