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Article
Publication date: 17 December 2018

A. Vivek, K. Shambavi and Zachariah C. Alex

This paper aims to focus on research work related to metamaterial-based sensors for material characterization that have been developed for past ten years. A decade of…

Abstract

Purpose

This paper aims to focus on research work related to metamaterial-based sensors for material characterization that have been developed for past ten years. A decade of research on metamaterial for sensing application has led to the advancement of compact and improved sensors.

Design/methodology/approach

In this study, relevant research papers on metamaterial sensors for material characterization published in reputed journals during the period 2007-2018 were reviewed, particularly focusing on shape, size and nature of materials characterized. Each sensor with its design and performance parameters have been summarized and discussed here.

Findings

As metamaterial structures are excited by electromagnetic wave interaction, sensing application throughout electromagnetic spectrum is possible. Recent advancement in fabrication techniques and improvement in metamaterial structures have led to the development of compact, label free and reversible sensors with high sensitivity.

Originality/value

The paper provides useful information on the development of metamaterial sensors for material characterization.

Details

Sensor Review, vol. 39 no. 3
Type: Research Article
ISSN: 0260-2288

Keywords

Article
Publication date: 15 July 2021

Mehdi Habibi, Yunus Dawji, Ebrahim Ghafar-Zadeh and Sebastian Magierowski

Nanopore-based molecular sensing and measurement, specifically DNA sequencing, is advancing at a fast pace. Some embodiments have matured from coarse particle counters to…

Abstract

Purpose

Nanopore-based molecular sensing and measurement, specifically DNA sequencing, is advancing at a fast pace. Some embodiments have matured from coarse particle counters to enabling full human genome assembly. This evolution has been powered not only by improvements in the sensors themselves, but also in the assisting microelectronic CMOS readout circuitry closely interfaced to them. In this light, this paper aims to review established and emerging nanopore-based sensing modalities considered for DNA sequencing and CMOS microelectronic methods currently being used.

Design/methodology/approach

Readout and amplifier circuits, which are potentially appropriate for conditioning and conversion of nanopore signals for downstream processing, are studied. Furthermore, arrayed CMOS readout implementations are focused on and the relevant status of the nanopore sensor technology is reviewed as well.

Findings

Ion channel nanopore devices have unique properties compared with other electrochemical cells. Currently biological nanopores are the only variants reported which can be used for actual DNA sequencing. The translocation rate of DNA through such pores, the current range at which these cells operate on and the cell capacitance effect, all impose the necessity of using low-noise circuits in the process of signal detection. The requirement of using in-pixel low-noise circuits in turn tends to impose challenges in the implementation of large size arrays.

Originality/value

The study presents an overview on the readout circuits used for signal acquisition in electrochemical cell arrays and investigates the specific requirements necessary for implementation of nanopore-type electrochemical cell amplifiers and their associated readout electronics.

Case study
Publication date: 1 October 2011

Rajagopal Shambavi and Sitalakshmi Ramanan

Marketing Communication.

Abstract

Subject area

Marketing Communication.

Study level/applicability

At the undergraduate level, this case can be used in marketing courses such as Marketing Fundamentals, Marketing Management, Marketing Communication and Consumer Behavior. This case may also be used for Master's level students for Quality when focusing on safety/security in offices and factories.

Case overview

This case is used to introduce the concept of B2B and B2C marketing and explore the possibilities of converting an industry that essentially uses B2B marketing communication to choose B2C options. This case is also important for creating awareness on safety and preventive measures in the face of a fire crisis.

Expected learning outcomes

Understanding the role of marketing communication. Differentiating between B2B and B2C markets. Exploring the application of B2C marketing communication in the fire suppression systems market in the Middle East.

Supplementary materials

Teaching notes.

Details

Emerald Emerging Markets Case Studies, vol. 1 no. 4
Type: Case Study
ISSN: 2045-0621

Keywords

Article
Publication date: 3 January 2017

Mohd Helmi Ali, Kim Hua Tan and Md Daud Ismail

The purpose of this paper is to propose a food supply chain (SC) integrity framework in the context of halal food.

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Abstract

Purpose

The purpose of this paper is to propose a food supply chain (SC) integrity framework in the context of halal food.

Design/methodology/approach

This paper provides a discussion on the development of food SC integrity framework using triangulation of interviews’ insights with literature.

Findings

Current industry practices such as standards have not been sufficient in embracing the concept of food SC integrity. As the food SC is complex, food SC integrity framework is proposed as a solution. This paper proposes food SC integrity framework for halal food. It consists of four dimensions, namely: raw material, production, service, and information integrity. In addition, key elements for each dimension are derived from the interviews’ insights.

Research limitations/implications

The framework provides the evidence that the safeguarding of halal food integrity does not rely solely on certification; but it requires an extensive effort beyond certification.

Practical implications

Safeguarding of food integrity should involve all stages and actors of the SC. Religious standards should incorporate SC integrity profiling through a controlling mechanism to promote higher food product integrity.

Originality/value

Food SC integrity framework is important to religious food as it plays a significant role to the population. This study contributes to a newly developed SC integrity framework in the context of halal food.

Details

British Food Journal, vol. 119 no. 1
Type: Research Article
ISSN: 0007-070X

Keywords

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