Abstract: There is provided a temperature sensor including an optical fiber, and a sensing element spaced from the optical fiber. The sensing element is encapsulated in a optically transparent, non-porous material, isolating the sensing element from a surrounding environment. The optical fiber is aligned with the sensing element to deliver a source beam to interact with the sensing element and detect a return beam, where the return beam exhibits a temperature dependent property that is measured to determine a temperature of a measured object thermally coupled to the sensing element.

Abstract: The invention provides sensing devices for measuring an electrochemical parameter in a reactor. The sensing devices include one or more electrodes, a fastener comprising a female part and a male part, a compressible sealant inside an internal cavity of the male part, a spacer inside the internal cavity of the male part adjacent to and abutting the compressible sealant, a connector for connecting the compressible sealant and the male part and a connector for connecting the spacer and the compressible sealant. The male part, compressible sealant and spacer include one or more channels through which one of the one or more electrodes passes.

Abstract: There is provided a temperature sensor comprising: an optical fiber; and a sensing element spaced from the optical fiber; wherein the optical fiber is aligned with the sensing element to deliver a source beam to interact with the sensing element and detect a return beam, the return beam exhibiting a temperature dependent property that is measured to determine a temperature of a measured object thermally coupled to the sensing element.

Abstract: A sensing device for determining the presence of hydrogen peroxide is disclosed. The sensing device comprises a light guide having a distal portion terminating at a light guide tip and a proximal portion, wherein the light guide tip is proximal to a layer of Prussian blue (PB), which is pure (or essentially free of contaminants). The sensing device produces a fast linear response and is durable, due to the robustness and purity of the PB. The PB is chemically deposited proximal to, or on, the light guide tip using a single-source precursor technique. Methods of making and using the device also are disclosed herein.

Abstract: A sensing device for determining the presence of hydrogen peroxide is disclosed. The sensing device comprises a light guide having a distal portion terminating at a light guide tip and a proximal portion, wherein the light guide tip is proximal to a layer of Prussian blue (PB), which is pure (or essentially free of contaminants). The sensing device produces a fast linear response and is durable, due to the robustness and purity of the PB. The PB is chemically deposited proximal to, or on, the light guide tip using a single-source precursor technique. Methods of making and using the device also are disclosed herein.