Luminescence Phenomena: An Introduction

Murthy, K. V. R.; Virk, H.S.

doi:10.4028/www.scientific.net/ddf.347.1

Cited by 61 publications

(39 citation statements)

References 40 publications

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“…Luminescence is a phenomenon where certain molecules emit light not resulting from heat [97]. Luminescence can be of different types depending on the source of energy or the trigger for luminescence, some examples being chemiluminescence (CL) and electrochemiluminescence (ECL).…”

Section: Chemiluminescence and Electrochemiluminescence-based Detectionmentioning

confidence: 99%

Lab-on-a-Chip Systems for Aptamer-Based Biosensing

Khan

Song

2020

Micromachines

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Aptamers are oligonucleotides or peptides that are selected from a pool of random sequences that exhibit high affinity toward a specific biomolecular species of interest. Therefore, they are ideal for use as recognition elements and ligands for binding to the target. In recent years, aptamers have gained a great deal of attention in the field of biosensing as the next-generation target receptors that could potentially replace the functions of antibodies. Consequently, it is increasingly becoming popular to integrate aptamers into a variety of sensing platforms to enhance specificity and selectivity in analyte detection. Simultaneously, as the fields of lab-on-a-chip (LOC) technology, point-of-care (POC) diagnostics, and personal medicine become topics of great interest, integration of such aptamer-based sensors with LOC devices are showing promising results as evidenced by the recent growth of literature in this area. The focus of this review article is to highlight the recent progress in aptamer-based biosensor development with emphasis on the integration between aptamers and the various forms of LOC devices including microfluidic chips and paper-based microfluidics. As aptamers are extremely versatile in terms of their utilization in different detection principles, a broad range of techniques are covered including electrochemical, optical, colorimetric, and gravimetric sensing as well as surface acoustics waves and transistor-based detection.

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Section: Chemiluminescence and Electrochemiluminescence-based Detectionmentioning

confidence: 99%

Lab-on-a-Chip Systems for Aptamer-Based Biosensing

Khan

Song

2020

Micromachines

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“…Defect densities as low as 10 7 cm −3 can produce a measurable TL signal, whereas techniques such as Electron Paramagetic Spectroscopy (EPR) and Optical Absorption Spectroscopy (OAS) are only sensitive for higher defect concentrations of 10 12 cm −3 or more [2,15]. Finally, we like to mention that thermoluminescence is a phenomenon that can be observed from materials in various appearances.…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Thermoluminescence as a Research Tool to Investigate Luminescence Mechanisms

Bos

2017

Materials

231

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Thermally stimulated luminescence (TSL) is known as a technique used in radiation dosimetry and dating. However, since the luminescence is very sensitive to the defects in a solid, it can also be used in material research. In this review, it is shown how TSL can be used as a research tool to investigate luminescent characteristics and underlying luminescent mechanisms. First, some basic characteristics and a theoretical background of the phenomenon are given. Next, methods and difficulties in extracting trapping parameters are addressed. Then, the instrumentation needed to measure the luminescence, both as a function of temperature and wavelength, is described. Finally, a series of very diverse examples is given to illustrate how TSL has been used in the determination of energy levels of defects, in the research of persistent luminescence phosphors, and in phenomena like band gap engineering, tunnelling, photosynthesis, and thermal quenching. It is concluded that in the field of luminescence spectroscopy, thermally stimulated luminescence has proven to be an experimental technique with unique properties to study defects in solids.

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“…Franck-Condon principle can be described the transition between two electronic transitions using a simple harmonic oscillator [7]. In this paper, we will explore the harmonic relationship between ground state and excited state of electronic energy levels to describe the transition state.…”

Section: Introductionmentioning

confidence: 99%

General description of configurational coordinate model and kinetic of luminescence

Alias

Yaacob

Zabidi

et al. 2018

J. Fundam and Appl Sci.

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The configuration coordinate model has been used to explain the luminescence behavior of luminescence materials. In order to understand the luminescence process, the configuration coordinate model has explored. We begin by describing some of the early obse interpretations of optical absorption and of luminescence. The absorption and emission process are involving the optical transition between two harmonic oscillators ground state and excited state. The principal emphasis is on radiative transit optical absorption and luminescent emission. Finally, the luminescence determination has examined to study the effect of concentration of excited species to the luminescence process.

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Luminescence Phenomena: An Introduction

Cited by 61 publications

References 40 publications

Lab-on-a-Chip Systems for Aptamer-Based Biosensing

Lab-on-a-Chip Systems for Aptamer-Based Biosensing

Thermoluminescence as a Research Tool to Investigate Luminescence Mechanisms

General description of configurational coordinate model and kinetic of luminescence

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