In the last two decades, plasmon resonance in gold nanoparticles (Au NPs) has been the
subject of intense research efforts. Plasmon physics is intriguing and its precise modelling …

1. INTRODUCTION Detection of chemical and biological agents plays a fundamental role in
biomedical, forensic and environmental sciences 1− 4 as well as in anti bioterrorism …

A comprehensive review on the development and state of the art of colorimetric and
fluorometric sensor arrays is presented. Chemical sensing aims to detect subtle changes in …

Natural extracts are the source of many antioxidant substances. They have proven useful not
only as supplements preventing diseases caused by oxidative stress and food additives …

Nanoparticles are an essential component in the emerging field of nanomedical imaging
and therapy. When deployed in vivo, these materials are typically protected from the immune …

Bionanotechnology has now become firmly established in its own right as one of the
principle and focused subdisciplines within nanotechnology.(1-10) Bionanotechnology can …

Sensors are devices that respond to physical or chemical stimuli and produce detectable
signals. 1r4 They are a critical extension of human perception of the world in many aspects …

Rolling circle amplification (RCA) is an isothermal enzymatic process where a short DNA or
RNA primer is amplified to form a long single stranded DNA or RNA using a circular DNA …

Gold nanoparticles (AuNPs) provide excellent platforms for the development of colorimetric
biosensors as they can be easily functionalised, displaying different colours depending on …

Gold nanoparticles (GNPs) have generated keen interest among researchers in recent years
due to their excellent physicochemical properties. In general, GNPs are biocompatible …