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Article
Publication date: 25 February 2014

S. Radavičiene, M. Jucienė, V. Sacevičiene, R. Sacevičius and K. Otas

The purpose of this paper is to determine conformity of geometrical parameters between the elements embroidered with photoluminescent threads and their digital images as well as…

Abstract

Purpose

The purpose of this paper is to determine conformity of geometrical parameters between the elements embroidered with photoluminescent threads and their digital images as well as to explore the change in photoluminescent radiation.

Design/methodology/approach

Using some different methodologies and apparatus, analysis shape of embroidered elements conformity and photoluminescent luminance attenuation are analysed.

Findings

The provided methodologies allow assessing the quality of embroidered elements area and photoluminescent properties.

Originality/value

The proposed approach can be adjusted to investigate photoluminescent properties of embroidered elements of different filling types.

Details

International Journal of Clothing Science and Technology, vol. 26 no. 1
Type: Research Article
ISSN: 0955-6222

Keywords

Article
Publication date: 11 January 2011

C. Wang, P. Yan, S. Wang, X. Bai, J. Yuan, E. Yan and Z. Huang

The purpose of this paper is to investigate the preparation process and the photoluminescent properties of poly‐(phenylene vinylene) (PPV)/polyvinyl alcohol (PVA)/Ag2S composite…

Abstract

Purpose

The purpose of this paper is to investigate the preparation process and the photoluminescent properties of poly‐(phenylene vinylene) (PPV)/polyvinyl alcohol (PVA)/Ag2S composite nanofibres.

Design/methodology/approach

A simple method coupling electrospinning technology and in situ self‐assembly was used to prepare PPV/PVA/Ag2S nanofibres from the solution containing precursory PPV, PVA and silver nitrate (AgNO3). The photoluminescent properties of the PPV/PVA/Ag2S composite nanofibres were characterised by fluorescence microscopy and eclipse fluorescence spectrophotometer.

Findings

The Ag2S nanoparticles were well dispersed in the PPV/PVA/Ag2S composite nanofibres, and their dimension was in the range of 10‐40 nm. Excessive doping of Ag2S nanoparticles will lead to rough and uneven fibres' surface.

Research limitations/implications

The size of Ag2S nanoparticles in the fibres was not uniform enough and the orientation of composite nanofibres was hardly controlled.

Practical implications

The coupling of electrospinning technology and in situ self‐assembly opened a new gate for preparing other nanoparticles doped composite nanofibres.

Originality/value

The in situ growing of Ag2S nanoparticles in PPV nanofibre improved the excellent properties of composite nanofibres. The morphology of composite nanofibres can be efficaciously controlled via adjusting the ratio between AgNO3 and polymer. The obtained PPV/PVA/Ag2S composite nanofibres will have potential applications in nano‐optoelectronic devices.

Details

Pigment & Resin Technology, vol. 40 no. 1
Type: Research Article
ISSN: 0369-9420

Keywords

Article
Publication date: 22 March 2011

J. Chen, P. Yang, Z. Huang, C. Wang and C. Wang

The purpose of this paper is to investigate three preparation processes and the photoluminescent (PL) properties of PbS/poly(p‐phenylene vinylene) (PPV) composite fibres.

Abstract

Purpose

The purpose of this paper is to investigate three preparation processes and the photoluminescent (PL) properties of PbS/poly(p‐phenylene vinylene) (PPV) composite fibres.

Design/methodology/approach

By the combination of electrospinning technology, chemical vapour deposition and chemical liquid deposition, PbS/PPV composite nanofibres were prepared by three simple methods. The morphologies of the fibres and the PL properties were researched with the transmission electron microscopy (TEM) and the eclipse fluorescence spectrophotometer.

Findings

By different synthetic methods, the dispersion morphologies of PbS nanoparticles and the PL properties of their respective PbS/PPV composite fibres were different. Moreover, the effects of PbS nanoparticles on the luminescence quenching of the PPV were observed in all the synthesised PbS/PPV composite fibres, respectively.

Research limitations/implications

The dispersion morphologies of PbS nanoparticles were not uniform enough.

Practical implications

A new method was used for preparing nanoparticles/polymer composite fibres.

Originality/value

The combination of electrospinning technology and chemical liquid deposition was used for the first time to fabricate the sulfide/polymer composite fibres. In addition, we hope that the results obtained here will provide some useful evidences for the interaction mechanism between IV‐VI group semiconductors and conjugated polymers, and the prepared composite fibres will have applications in the nano‐optoelectronic field.

Details

Pigment & Resin Technology, vol. 40 no. 2
Type: Research Article
ISSN: 0369-9420

Keywords

Article
Publication date: 1 June 2002

Roshan Shishoo

This paper outlines the innovations in high functional and high performance fibres for applications in protective clothing, including fibres for flame and heat protection. It also…

4291

Abstract

This paper outlines the innovations in high functional and high performance fibres for applications in protective clothing, including fibres for flame and heat protection. It also describes some typical woven and non‐woven constructions for such applications. And presents the trends in producing smart textile materials, capable of interacting with human/environmental conditions.

Details

International Journal of Clothing Science and Technology, vol. 14 no. 3/4
Type: Research Article
ISSN: 0955-6222

Keywords

Article
Publication date: 4 September 2017

R.D. Zhu, Y.H. Wang, N.G. Wang, L.N. Zhang, A. Lu, M.J. Wang and X. Liu

This paper aims to introduce a novel approach to the fabrication of photoluminescent materials by coating rare earth aluminate luminescent materials on metallic substrates and a…

Abstract

Purpose

This paper aims to introduce a novel approach to the fabrication of photoluminescent materials by coating rare earth aluminate luminescent materials on metallic substrates and a readily manufacturable light source with robust structure in the form of photoluminescent sphere (APS).

Design/methodology/approach

The clean and dried stainless steel sphere was sprayed with UH 2593, a white undercoat, the luminescent coating and the weather resistance coating in chronological order.

Findings

After adhered onto the stainless steel sphere, the peaks corresponding to the N-H stretching vibrations were changed. The intensity of free N-H stretching at 3,536 cm−1 dramatically decreased and the peak of hydrogen-bonded N-H stretching of PU moved to lower wavenumbers. The red shift of the infrared bands of functional groups was attributed to the strengthened hydrogen bonding. The hydrogen bonding interactions between the stainless steel substrates and the polyurethane coating endowed the APS with excellent adhesive property and also promoted the evenly distribution of the photoluminescent particles in the polymer coating matrix.

Practical implications

This approach can be applicable in the fabrication of the photoluminescent materials. The APS can be used as signs and guiding post in remote areas without sufficient electricity supply and in the seas and rivers with complicated hydrological conditions.

Originality/value

This approach has provided a method to produce tough and durable luminescent signs for remote areas and dangerous seas and explained the functional mechanism of the combined application of metallic materials and non-metallic materials.

Details

Pigment & Resin Technology, vol. 46 no. 5
Type: Research Article
ISSN: 0369-9420

Keywords

Article
Publication date: 1 February 1992

Radislav Potyrailo and Sergei Golubkov

Achievements in guided wave optics have had a great influence on many areas of technology for several years. Fibre optic communication links, sensors for various parameters…

Abstract

Achievements in guided wave optics have had a great influence on many areas of technology for several years. Fibre optic communication links, sensors for various parameters, recently developed distributed temperature sensors, integrated optical switches, etc. are all applications that are commercially available. The field of analytical chemistry is no exception in this growing technology. In order to compete with well‐established chemical‐sensing instrumentation, optical waveguide chemical sensors (OWCSs) must show all the qualities of such instrumentation. OWCSs combine well‐known features of sensors, based on waveguide optics, with optical methods of chemical analysis and offer advantages over other types of chemical sensor. OWCSs are electrically passive, corrosion‐resistant, can respond to analytes for which other chemical sensors are not available, and referencing can be carried out optically. They allow multicomponent measurements at several wavelengths, have a common technology for fabrication of sensors for different chemical and physical parameters and are easily compatible with telemetry etc. Further, only OWCSs are capable of distributed sensing. However, interference from ambient light, temperature, long‐term instability, relatively slow response time, and limited dynamic range may be a problem for some types of OWCS. These disadvantages can be considerably reduced using various methods.

Details

Sensor Review, vol. 12 no. 2
Type: Research Article
ISSN: 0260-2288

Article
Publication date: 1 March 2005

M. McSherry, C. Fitzpatrick and E. Lewis

There are various temperature measuring systems presented in the literature and on the market today. Over the past number of years a range of luminescent‐based optical fibre

1445

Abstract

Purpose

There are various temperature measuring systems presented in the literature and on the market today. Over the past number of years a range of luminescent‐based optical fibre sensors have been reported and developed which include fluorescence and optical scattering. These temperature sensors incorporate materials that emit wavelength shifted light when excited by an optical source. The majority of commercially available systems are based on fluorescent properties.Design/methodology/approach – Many published journal articles and conference papers were investigated and existing temperature sensors in the market were examined.Findings – In optical thermometry, the light is used to carry temperature information. In many cases optical fibres are used to transmit and receive this light. Optical fibres are immune to electromagnetic interference and are small in size, which allows them to make very localized measurements. A temperature sensitive material forms a sensor and the subsequent optical data are transmitted via optical fibres to electronic detection systems. Two keys areas were investigated namely fluorescence based temperature sensors and temperature sensors involving optical scattering.Originality/value – An overview of optical fibre temperature sensors based on luminescence is presented. This review provides a summary of optical temperature sensors, old and new which exist in today's world of sensing.

Details

Sensor Review, vol. 25 no. 1
Type: Research Article
ISSN: 0260-2288

Keywords

Article
Publication date: 12 September 2008

Z.Y. Sun, G. Xie, X.D. Bai and Y.J. Chen

The purpose of this paper is to study the preparation and characterisation of poly(p‐phenylene vinylene), PPV/TiO2 photoluminescent (PL) nanofibres, and the causes of the…

Abstract

Purpose

The purpose of this paper is to study the preparation and characterisation of poly(p‐phenylene vinylene), PPV/TiO2 photoluminescent (PL) nanofibres, and the causes of the blue‐shift in PL spectrum of the as‐prepared composite nanofibres.

Design/methodology/approach

A simple method coupling sol‐gel method and electrospinning technology was used to prepare PPV/TiO2 nanofibres from precursory PPV solution.

Findings

Small‐angle X‐ray diffractometer showed that the nano‐TiO2 was mainly amorphous in composite nanofibres. The PL spectrum of the composite nanofibres confirmed the conclusion that there was a slight blue‐shift in the PL spectrum owing to the existence of TiO2 nanoparticles.

Research limitations/implications

The nanofibres collected aligned in random orientation, if parallel nanofibres were obtained. Practical applications will be effected.

Practical implications

The electrospinning method provides an effective strategy for preparing polymer composite nanomaterials.

Originality/value

Composite nanofibres will have potential applications for green optical/electric devices such as LEDs, sensors, transducers and flat panel displays.

Details

Pigment & Resin Technology, vol. 37 no. 5
Type: Research Article
ISSN: 0369-9420

Keywords

Article
Publication date: 14 September 2010

Robert Bogue

The paper aims to provide a technical review of the application of quantum dot (QD) technology to sensors.

Abstract

Purpose

The paper aims to provide a technical review of the application of quantum dot (QD) technology to sensors.

Design/methodology/approach

Following a brief introduction to QD technology, this paper considers recent research on QD‐based physical, chemical and gas sensors.

Findings

This shows that QDs are being exploited in a range of experimental sensors for detecting physical variables, notably radiant/electromagnetic quantities and temperature; chemical compounds, such as metals and many species of clinical interest; and a variety of gases and vapours. Prospects also exist to develop improved sources and detectors for use in optical gas sensors.

Research limitations/implications

The paper does not consider biomedical uses of QDs such as cellular imaging, bioassays and biosensors.

Originality/value

This provides a detailed insight into recent research on physical, chemical and gas sensors based on QD technology.

Details

Sensor Review, vol. 30 no. 4
Type: Research Article
ISSN: 0260-2288

Keywords

Article
Publication date: 1 August 1986

IT IS AN AXIOM that engineers never stop learning. Every fresh job is a fresh challenge that must be met and overcome.

Abstract

IT IS AN AXIOM that engineers never stop learning. Every fresh job is a fresh challenge that must be met and overcome.

Details

Work Study, vol. 35 no. 8
Type: Research Article
ISSN: 0043-8022

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