A soil moisture indicator contains a water-absorbing material and a color-changing part. A body part is formed and hollow by a material through which water does not pass, and has a water-absorbing opening proximate one end and a transpiration opening positioned near the other end. A display part is connected to the other end of the body part and allows an inner hollow portion to be viewed. An upper-end part that constitutes the end portion of the display part can be removed from and connected to the display part at the end portion on the opposite side to the end portion connected to the body. There is a change in color tone indication between a water-absorbed state and a dry state.

A humidity controlling material includes: a first particle; and a second particle. The first particle includes: a first humidity controlling liquid containing a hygroscopic substance; and a first holding portion holding the first humidity controlling liquid. The second particle includes: a second humidity controlling liquid containing the hygroscopic substance; and a second holding portion holding the second humidity controlling liquid. The first holding portion and the second holding portion are formed of a polymeric material. The first humidity controlling liquid includes a first indicator a color of which changes according to an amount of moisture contained in the first humidity controlling liquid. The second humidity controlling liquid includes a second indicator a color of which changes, in a transition range different from a transition range of the first indicator, according to an amount of moisture contained in the second humidity controlling liquid.

A humidity controlling material includes: a first particle; and a second particle. The first particle includes: a first humidity controlling liquid containing a hygroscopic substance; and a first holding portion holding the first humidity controlling liquid. The second particle includes: a second humidity controlling liquid containing the hygroscopic substance; and a second holding portion holding the second humidity controlling liquid. The first holding portion and the second holding portion are formed of a polymeric material. The first humidity controlling liquid includes a first indicator a color of which changes according to an amount of moisture contained in the first humidity controlling liquid. The second humidity controlling liquid includes a second indicator a color of which changes, in a transition range different from a transition range of the first indicator, according to an amount of moisture contained in the second humidity controlling liquid.

The present invention relates to a humidity-sensing structural color emitting laminate and a structural color display device self-powered by triboelectricity including the same, and more specifically to a structural color display device self-powered by triboelectricity, which can directly sense humidity among human body signals and display the same in structural color immediately without a separate power source and without data processing, and a humidity-sensing structural color emitting laminate for implementing the same.

The present invention relates to a humidity-sensing structural color emitting laminate and a structural color display device self-powered by triboelectricity including the same, and more specifically to a structural color display device self-powered by triboelectricity, which can directly sense humidity among human body signals and display the same in structural color immediately without a separate power source and without data processing, and a humidity-sensing structural color emitting laminate for implementing the same.

A fiber optic sensing device includes an optical fiber having a polished end defining a flat sensory portion coated with a lossy-mode-resonance (LMR) coating. A reflective coating on an end face of the optical fiber facilitates propagation of a return signal. An optic circuit for identifies a wavelength attenuated by the LMR coating from the return signal reflected by the reflective coating based on a moisture presence at the sensory portion. Various gaseous parameters may be detected based on the coating on the sensory portion. An LMR coating of tin oxide (SnO.sub.2) is employed for moisture sensing.

Recent progress related to energy harvesting solutions and printed electronics is opening the opportunity for a smart label to combine chemical/physical color change technology with an electronic based reader architecture, which can be achieved with printed electronics technologies and can be suitable for monitoring applications that are very cost sensitive. The smart label provides an innovative product architecture to achieve a very low cost solution to monitor packaged items during storage and shipment. Exemplary applications of the smart label include, but are not limited to, cold chain monitoring, food monitoring, and in-package control of sensitive devices, such as electronic components.

Recent progress related to energy harvesting solutions and printed electronics is opening the opportunity for a smart label to combine chemical/physical color change technology with an electronic based reader architecture, which can be achieved with printed electronics technologies and can be suitable for monitoring applications that are very cost sensitive. The smart label provides an innovative product architecture to achieve a very low cost solution to monitor packaged items during storage and shipment. Exemplary applications of the smart label include, but are not limited to, cold chain monitoring, food monitoring, and in-package control of sensitive devices, such as electronic components.

A chemical indicating composition. The composition can include an aqueous resin in a form of polymer emulsion or polymer dispersion, the aqueous resin comprising a first aqueous resin composition and a second aqueous resin composition; a film-forming agent; a color changing composition; and water as a solvent. The chemical indicating composition of this disclosure can be used in an autoclave process indicator.

There is provided an external load transport assembly for an aerial vehicle. The assembly includes a load suspension line having a first end connectable to the aerial vehicle and a second end connectable to an external load. The assembly includes a relative humidity indicator positioned to monitor moisture content of the load suspension line. The assembly includes an at least partially transparent coating encasing the load suspension line and the relative humidity indicator.