Dear Colleagues,

An increasing number of fields in everyday life require development and application of ever more modern and efficient chemical sensors and biosensors, from drug detection to clinical diagnosis, from control of industrial quality and safety and combating bioterrorism to health and environmental monitoring. However, the general way to develop these sensors is by using hierarchical assembly of nanoscale building blocks as thin films sensing structures to adsorb each of the molecules to be detected typically by different methods such as potentiometry, amperometry, cyclic voltammetry, impedance spectroscopy, and also by other methods, for example, microcantilevers and surface acoustic waves, among others, and fiber optic-based sensor devices. The goal of this Special Issue on Thin Film-Based Sensor Devices is to give a survey of the state-of-the-art on organic and inorganic thin films sensor-based devices, which allow the detection of a determined molecular specie or set of molecules on a complex media, in order to compile, criticize, and systematize the achieved knowledge and to provide guidelines for a next generation of quantifying and selective sensor devices. Under this compliance, we are launching the challenge for the submission of review-like contributions covering both theoretical and practical aspects in the field of thin films sensor devices made of functional molecular layers, capable of detection and quantification particularly in complex media. A wide range of experimental techniques for the obtention of molecular layers can be envisaged herein, as, for example, Langmuir–Blodgett, self-assembly, layer-by-layer, molecularly imprinted polymers, sol–gel, casting, spin-coating, vacuum evaporating, plasma assisted deposition, electron beam deposition, chemical vapor deposition or molecular beam epitaxy.

Dr. Maria Raposo
Dr. Paulo A. Ribeiro
Guest Editors

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