This is the first comprehensive review on methods and materials for use in optical sensing of
pH values and on applications of such sensors. The Review starts with an introduction that …

There has been a consistent increase in output related to the development and application
of optical chemical sensors since∼ 1980. The rise of activity was linked to the major …

This review summarizes principles and current stage of development of fiber-optic chemical
sensors (FOCS) and biosensors (FOBS). Fiber optic sensor (FOS) systems use the ability of …

Optical sensors, unlike most others, enable multiple sensing of (bio) chemical species by
making use of probes whose signals can be differentiated by spectral and/or temporal …

The pH dynamics plays an important role in maintaining the homeostasis of the brain and is
related to a variety of brain diseases. Yet, there are many challenges in designing long-term …

A novel electromagnetic sensor operating at microwave frequencies with quality factor of
22,000 at 1.4 GHz for real-time sensing of fluid properties is presented. The core of the …

Abstract A two-dimensional (2D) imaging technique, planar optode (PO) technique, is
developed to investigate biogeochemical processes at a high resolution in heterogeneous …

This article reports on a fiber‐based ratiometric optical pH sensor for use in real‐time and
continuous in vivo pH monitoring in human tissue. Stable hybrid sol–gel‐based pH sensing …

New aza-BODIPY pH indicators with spectral properties modulated solely by photoinduced
electron transfer (PET) are presented. The pH sensitive hydroxyl group is located in the meta …

pH-sensitive chromic textiles are promising materials that can be used as flexible sensor
systems providing an easily visible signal. However to date, mainly conventional dyeing …