Abstract: The invention concerns electrodes suitable for use in a redox flow battery, the electrode comprising a plurality of perforations ranging in diameter from 100 ?m to 10 cm. The introduction of such perforations is correlated to at least a 10% increase in the power density of the redox flow battery. The invention also concerns methods of making such electrodes and flow batteries having at least one such electrode.

Abstract: A sensing device for detecting a physical parameter exemplified by pressures, strains, temperatures, indices of refraction, and combinations thereof. The sensing device comprises a probe having a housing for sealably mounting therein an optical fiber. The optical fiber is provided at its distal end with at least two spaced apart fiber Bragg gratings. The proximal end of the probe is engagable with a holder, and is in communication with fiber Bragg grating interrogation systems. Spacers and seals may be provided about the optical fiber between the fiber Bragg gratings. An orifice may be provided and sealed with a resilient membrane to provide a contained airspace around each fiber Bragg grating. The contained airspace may be optionally filled with a fluid or a gas.

Abstract: A sensing device for detecting a physical parameter exemplified by pressures, strains, temperatures, indices of refraction, and combinations thereof. The sensing device comprises a probe having a housing for sealably mounting therein an optical fibre. The optical fibre is provided at its distal end with at least two spaced apart fibre Bragg gratings. The proximal end of the probe is engagable with a holder, and is in communication with fibre Bragg grating interrogation systems. Spacers and seals may be provided about the optical fibre between the fibre Bragg gratings. An orifice may be provided and sealed with a resilient membrane to provide a contained airspace around each fibre Bragg grating. The contained airspace may be optionally filled with a fluid or a gas.

Abstract: A pressure sensor for connecting to a detector is provided. The pressure sensor comprises: an optical fibre, having a distal end with a distal plane for sensing pressure, a proximal end for communicating with a patch cord, and an In-fibre Bragg grating (FBG) therebetween; a housing, having a distal aperture, a proximal aperture and a bore therebetween, and sized to accept the optical fibre; an annular ring, forming a flexible seal between said optical fibre and housing at least distal to the FBG and a holder for retaining the housing. The FBG is housed in the housing such that in use, axial strain is transferred to said In-fibre Bragg grating housed within said housing by pressure exerted on the distal plane.

Abstract: An optical fiber sensing device for detecting physical parameters such as pressures, strains and temperatures comprises a probe housing therein an optical fiber. The distal end of the probe houses a distal portion of the optical fiber having a section provided with a fiber Bragg grating. The proximal end of the probe is mounted into a holder. The optical fiber is sealably mounted into the probe housing with a first seal overlaid the proximal portion of the optical fiber The seal may extend to about the proximal end of the optical fiber section with the Bragg grating. A second seal is overlaid the distal portion of the optical fiber and extends from the distal end of the probe to about the distal end of the optical fiber section with the Bragg grating. The proximal end of the probe is communicable with a fiber Bragg grating interrogation system.

Abstract: An optical fibre sensing device for detecting physical parameters such as pressures, strains and temperatures comprises a probe housing therein an optical fibre. The distal end of the probe houses a distal portion of the optical fibre having a section provided with a fibre Bragg grating. The proximal end of the probe is mounted into a holder. The optical fibre is sealably mounted into the probe housing with a first seal overlaid the proximal portion of the optical fibre The seal may extend to about the proximal end of the optical fibre section with the Bragg grating. A second seal is overlaid the distal portion of the optical fibre and extends from the distal end of the probe to about the distal end of the optical fibre section with the Bragg grating. The proximal end of the probe is communicable with a fibre Bragg grating interrogation system.

Abstract: A pressure sensor for connecting to a detector is provided. The pressure sensor comprises: an optical fibre, having a distal end with a distal plane for sensing pressure, a proximal end for communicating with a patch cord, and an In-fibre Bragg grating (FBG) therebetween; a housing, having a distal aperture, a proximal aperture and a bore therebetween, and sized to accept the optical fibre; an annular ring, forming a flexible seal between said optical fibre and housing at least distal to the FBG and a holder for retaining the housing. The FBG is housed in the housing such that in use, axial strain is transferred to said In-fibre Bragg grating housed within said housing by pressure exerted on the distal plane.