A guest-host smectic cell incorporates an alkyl 1,4-diaminoanthraquinone-2-carboxylate blue dye which is relatively highly resistant to degradation when exposed to the fields and current densities typically employed for switching by means of electrohydrodynamic induced instability effects. Such dyes may be employed admixed with other stable dyes to provide a black dye.
Indicating devices based on lateral diffusion of a mobile phase through a non-porous stationary phase
申请人:JP LABORATORIES, INC
公开号:US10451595B2
公开(公告)日:2019-10-22
This invention relates to indicating devices, such as time-temperature indicators based on lateral diffusion of a vapor of a solid and/or liquid mobile phase (e.g., a sublimeable dye or an activator) through a non-porous stationary phase, such as a thin layer of a polymeric material. The lateral diffusion of the mobile phase creates a noticeable boundary in the stationary phase whose movement depends upon processes, such as time and temperature.
INDICATING DEVICES BASED ON LATERAL DIFFUSION OF A MOBILE PHASE THROUGH A NON-POROUS STATIONARY PHASE
申请人:JP LABORATORIES, INC
公开号:US20160349224A1
公开(公告)日:2016-12-01
This invention relates to indicating devices, such as time-temperature indicators based on lateral diffusion of a vapor of a solid and/or liquid mobile phase (e.g., a sublimeable dye or an activator) through a non-porous stationary phase, such as a thin layer of a polymeric material. The lateral diffusion of the mobile phase creates a noticeable boundary in the stationary phase whose movement depends upon processes, such as time and temperature.
Imazeki, S.; Mukon, A.; Ozawa, T., Molecular Crystals and Liquid Crystals (1969-1991), 1989, vol. 170, p. 107 - 118