公开(公告)号：CA2451615A1

公开(公告)日：2003-01-03

申请号：CA2451615

申请日：2002-06-25

Applicant: UNIV WASHINGTON

Inventor： TAYA MINORU ,  XU CHUNYE

IPC: C08G61/12 ,  C09K9/02 ,  G02F1/15 ,  G02F1/153 ,  H01L51/00 ,  H01L51/30

Abstract: Large contrast ratio and rapid switching laminated electrochromic (EC) polym er device (50b) includes transparent electrode (42), cathodic EC polymer (44b), gel electrolyte (46), and counter electrode (52). Preferably the cathodic EC polymer is a poly(3,4 propylenedioxythiophene) derivative, PProDOT Me2. Counter-electrode (52) is a conductive coating deposited on transparent substrate, with preferred coatings including gold and highly conductive carbon. Lithography and sputtering can be employed to pattern a gold layer, while screen printing can be employed to similarly pattern graphite. Empiric al studies of preferred device indicate a color change of high contrast ratio o f transmittance (> 50 %T) is rapidly (0.5 1s) obtained upon applied 2.5V, repeatable to at least 10,000 times, as estimated by electrochemistry. Dual layer EC devices including PProDOT Me2 are also disclosed, as are methods fo r synthesizing preferred EC polymers.

公开(公告)号：CA2517312A1

公开(公告)日：2004-09-10

申请号：CA2517312

申请日：2004-02-27

Applicant: UNIV WASHINGTON

Inventor： CHEN HSIUHUNG ,  TAYA MINORU ,  WADA TAISHI ,  KUSAKA MASAHIRO

IPC: C22C20060101 ,  F01B29/10 ,  F02G1/04 ,  F16F1/02 ,  F16F1/06 ,  F16K31/00 ,  H01F1/03 ,  H01F7/16 ,  H01L41/12 ,  H01L41/20

Abstract: Multiple embodiments of ferromagnetic shape memory alloy (FSMA) based torque actuators are described. These torque actuators include a magnetic trigger and an FSMA member, which when actuated by the magnetic trigger, produces a torque for rotating a member. Examples of magnetic triggers include hybrid magnetic triggers having at least one electromagnet and at least one permanent magnet. The FSMA member can be configured as a coil (or plate) spring and can be fabricated of a true FSMA alloy (i.e., an alloy that exhibits both ferromagnetic and shape memory properties) or of an FSMA composite that includes a ferromagnetic portion and an SMA portion. Several embodiments include a central orifice in which the FSMA member and an axial rod configured to rotate when actuated are disposed; the magnetic trigger system is disposed about the periphery of the orifice.

公开(公告)号：CA2549705A1

公开(公告)日：2005-09-15

申请号：CA2549705

申请日：2005-03-01

Applicant: UNIV WASHINGTON

Inventor： LEGENSKI SUSAN ,  LIU LU ,  TAYA MINORU ,  XU CHUNYE

IPC: C07D495/04 ,  C07D491/044 ,  C07F7/08 ,  G02F1/15 ,  G02F1/153

Abstract: Syntheses of a new blue EC monomer (ProDOT-MePro), and a new red EC monomer (ProDOP-Et2) are described. Two additional new types of EC monomers based on 3, 4-alkylenedioxythiophene include fluorinated EC monomers and an EC monome r including silicon. EC polymer devices having more than one different color E C polymer to enable additional colors to be provided using subtractive color mixing are also described, as well as EC polymer devices incorporating a log o, image, or text, are generally obscured when the device is colored, but becom e visible when the device is not colored. Also described are EC polymer device s that include a cathodic EC polymer layer, a gel electrolyte, a counter electrode, and a reference electrode. Working prototypes of such devices exhibit significant increases in the speed of transition of the EC device fr om a colored state to a transparent state.