Bending stress induced improved chemiresistive gas sensing characteristics of flexible cobalt-phthalocyanine thin films

Singh, Ajay; Kumar, Ashwini; Kumar, Arvind; Samanta, Soumen; Joshi, Nirav; Balouria, Vishal; Debnath, A.K.; Prasad, Ram; Salmi, Zakaria; Chehimi, Mohamed M.; Aswal, D. K.; Gupta, S. K.

doi:10.1063/1.4800446

Cited by 40 publications

(27 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At higher bending angle, the average distance between film and the analytes increases leading to a lower sensitivity of the film. Similar increase in the sensitivity of the sensor with the bending angle is being reported by other groups4445.…”

Section: Discussionsupporting

confidence: 89%

Nanocomposite based flexible ultrasensitive resistive gas sensor for chemical reactions studies

Pandey

Goswami

Nanda

2013

Sci Rep

121

View full text Add to dashboard Cite

Room temperature operation, low detection limit and fast response time are highly desirable for a wide range of gas sensing applications. However, the available gas sensors suffer mainly from high temperature operation or external stimulation for response/recovery. Here, we report an ultrasensitive-flexible-silver-nanoparticle based nanocomposite resistive sensor for ammonia detection and established the sensing mechanism. We show that the nanocomposite can detect ammonia as low as 500 parts-per-trillion at room temperature in a minute time. Furthermore, the evolution of ammonia from different chemical reactions has been demonstrated using the nanocomposite sensor as an example. Our results demonstrate the proof-of-concept for the new detector to be used in several applications including homeland security, environmental pollution and leak detection in research laboratories and many others.

show abstract

Section: Discussionsupporting

confidence: 89%

Nanocomposite based flexible ultrasensitive resistive gas sensor for chemical reactions studies

Pandey

Goswami

Nanda

2013

Sci Rep

121

View full text Add to dashboard Cite

show abstract

“…An ideal sensor should meet the following significant criteria: i) operation at room temperature in an ambient environment; ii) fast response and recovery times without an external stimulus (e.g. UV lamp); iii) high sensitivity with a low detection limit; iv) high reproducibility with repeatable responses; v) cost effective and easy‐to‐fabricate; vi) low‐voltage (<5 V) power design; and vii) biocompatible and eco‐friendly …”

Section: Nanomaterial‐based Flexible Sensors For Volatolomic Applicatmentioning

confidence: 99%

Nanoscale Sensor Technologies for Disease Detection via Volatolomics

Vishinkin

Haick

2015

Small

172

209

View full text Add to dashboard Cite

The detection of many diseases is missed because of delayed diagnoses or the low efficacy of some treatments. This emphasizes the urgent need for inexpensive and minimally invasive technologies that would allow efficient early detection, stratifying the population for personalized therapy, and improving the efficacy of rapid bed-side assessment of treatment. An emerging approach that has a high potential to fulfill these needs is based on so-called "volatolomics", namely, chemical processes involving profiles of highly volatile organic compounds (VOCs) emitted from body fluids, including breath, skin, urine and blood. This article presents a didactic review of some of the main advances related to the use of nanomaterial-based solid-state and flexible sensors, and related artificially intelligent sensing arrays for the detection and monitoring of disease with volatolomics. The article attempts to review the technological gaps and confounding factors related to VOC testing. Different ways to choose nanomaterial-based sensors are discussed, while considering the profiles of targeted volatile markers and possible limitations of applying the sensing approach. Perspectives for taking volatolomics to a new level in the field of diagnostics are highlighted.

show abstract

“…These films showed high mobility and exhibited enhanced sensitivity towards ammonia on bending which shows its potential for ammonia sensor at curved surfaces 15,16. These devices were stable for 70 days under atmospheric conditions.…”

mentioning

confidence: 93%

“…[13][14][15][16][17] In-situ photopolymerisation of pyrrole using AgNO 3 as photosensitizer on modified BOPET substrate resulted in adhesive and flexible PPy-Ag nanocomposites films. [13][14][15][16][17] In-situ photopolymerisation of pyrrole using AgNO 3 as photosensitizer on modified BOPET substrate resulted in adhesive and flexible PPy-Ag nanocomposites films.…”

Section: Introductionmentioning

confidence: 99%

Flexible organic semiconductor thin films

Gupta¹,

Jha²,

Singh³

et al. 2015

J. Mater. Chem. C

Self Cite

View full text Add to dashboard Cite

Research on organic semiconductor thin films has been accelerated due to its potential for low cost large area flexible devices. Already there are various products based on organic semiconductor thin films such as displays which have been commercialized. Further studies are needed for the development of flexible devices. In this paper, investigations on various processes for organic semiconductor thin film deposition on flexible substrates and their characterization carried out by us will be reviewed. Two different strategies have been adopted for the fabrication of flexible thin films using conducting polymers as well as molecular semiconductors and these are: (i) synthesis of freestanding films where there is no need for substrate, and (ii) preparation of thin films on flexible substrates. Devices such as organic field effect transistors, memory devices and gas sensors have been demonstrated using various flexible films. Effect of bending on characteristics of films and devices has also been investigated.

show abstract

Bending stress induced improved chemiresistive gas sensing characteristics of flexible cobalt-phthalocyanine thin films

Cited by 40 publications

References 24 publications

Nanocomposite based flexible ultrasensitive resistive gas sensor for chemical reactions studies

Nanocomposite based flexible ultrasensitive resistive gas sensor for chemical reactions studies

Nanoscale Sensor Technologies for Disease Detection via Volatolomics

Flexible organic semiconductor thin films

Contact Info

Product

Resources

About