Polarization Stability of Amorphous Piezoelectric Polyimides

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NASA/CR-1999-29833 ICASE Report No. 99-53 Polarization Stability of Amorphous Piezoelectric Polyimides C. Park NASA Langley Research Center, Hampton, Virginia Z. Ounaies ICASE, Hampton, Virginia J. Su, J.G. Smith, Jr., a J.S Harrison NASA Langley Research Center, Hampton, Virginia Institute for Computer Applications in Science a Engineering NASA Langley Research Center Hampton, VA Operated by Universities Space Research Association National Aeronautics a Space Administration Langley Research Center Hampton, Virginia 23681-2199 Prepared for Langley Research Center uer Contract NAS1-9746 December 1999

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8} sz sab% ( ]VI %sjz BP x}]\w s Y ti BP Y ni Zt s dx( ] sti Ys BP d(}]\w s 1(( ] s Y ti BP Y ;Y Zt b BAs$t I qy R RZjR s t{bzs$t sti }B ti ZR BP Y R }Bjk$8$I R sr R trbr $t Y$Y 8} sz s BR}s{ s}}j${s$btr 1.9 8 d 31 (pc/n).8.7.6 up to 5 C up to 1 C.5 d 31 (pc/n) 6 4 up to 5 C up to 1 C.4.3 3 4 5 6 7 8 9 1 Temperature, T ( C) 2 up to 15 C up to 2 C 5 1 15 2 Temperature, T ( C) 3yp 1*kts8${ RsA$j$k BP I BP PZjjk {Z I {Bt% t$btsjjk }Bj I }Bjk$8$I P$j8 wd <9D n1 _s$sjjk {Z I {BBts }Bj I wβt]wdv_ \!*_V V }BR$$% {BBts }Bj$t bsr ZR I PB Y }s$sjjk {Z I }Bjk8 R $t st s 8} B 8s-$8$9 Y I BP I$}Bjs B$ ts$bt sti 8$t$8$9 jb{sj$9 I s{$t IZ$t $ttr$z $8$I$9s$Bt sti }Bj$t qy sj$t I }Bjs BZ}R RYBZjI A $88BA$j$9 I Ak sii$$btsj $8$I$9s$Bt sti RZAR JZ t {BBj$t $t Y } R t{ BP st j {${ P$ ji qsaj d RZ88s$9 R Y {Z {k{j q sti I BP $8$I$9s$Bt BP Y }Bjk$8$I R BY Y q sti Y I BP $8$I$9s$Bt $t{ sr I sj8br j$t sjk b$y Y P$tsj {Z 8} sz qyzr Y$Y 8BA$j$k BP Y I$}Bj R RYBZjI A -} { I PB Y }Bjk8 R {Z I s s jbb 8} sz qy 8st t }Bjs$9s$Bt BP Y R R} {$8 tr bsr 8 srz I sti j$r I $t qsaj d qy %sjz BP _ s}} s I Y$Y by t {Z I s jbb 8} sz 7$t{ Y 8BA$j$k BP Y 8Bj {Zj R BP Y }s$sjjk {Z I }Bjk$8$I RYBZjI A 8Z{Y Y$Y Yst Ys BP Y PZjjk {Z I Bt Y }Bjs BZ}R BP Y PB8 s -} { I B B$ t }ssjj j B Y P$ ji I$ {$Bt 8B PP${$ tjk Yst Y js qy PB }Bj$t $t s }s$sjjk $8$I$9 I Rs 8sk }BIZ{ s Y$Y I BP I$}Bj B$ ts$bt Yst }Bj$t $t s PZjjk $8$I$9 I Rs Y Ak t s$t Y$Y _ qy _dx( }s$sjjk {Z I }Bjk$8$I -Y$A$ I R$- $8 R Y$Y _ Yst Y PZjjk {Z I Bt ZtI Y Rs8 {BBts }Bj$t {BtI$$Bt by${y bsr s Yst -} { I PB8 Y } j$8$tsk I$ j {${ 8 srz 8 t 3$Z n RYBbR st -s8}j BP Y _ BP s }s$sjjk {Z I {BBts }Bj I wβt]wd V_ \!*_V w_dx(d qy }s$sjjk {Z I }Bjk8 R ti B RYBb ABsI IBZAj I }Bjs$9$t {Z t } s,r IZ$t q7] 8 srz 8 t by$j Y PZjjk {Z I Bt R I }Bjs$9 b$y Bt RYs} } s, t s q qy IBZAj } s,r $8}jk $t{b8}j $8$I$9s$Bt IZ$t }Bj$t R$t{ Y } s, } R t Y q sti Y I$}Bj R }Bj I $t s }s$sjjk $8$I$9 I Rs s Y 8sjjk j RR RsAj Yst YBR }Bj I $t s PZjjk $8$I$9 I Rs 7$t{ Y }Bj$t 8} sz PB Y }s$sjjk {Z I }Bjk8 R bsr R j { I x ] sab% q BP Y PZjjk {Z I Bt Y I$}Bj R sj$t I $t Y sjk Rs wzt$8$i$9 I Rs D 8sk tb Ys% YsI tbzy $8 B js- Y $ -{ RR$% P %BjZ8 IZ$t Y $ttr$z $8$I$9s$Bt sti }Bj$t }B{ RR V sizsj $t{ sr BP Y }Bj$t ;

8} sz 8sk A I R$sAj B RY$P Y jbb } s, 8s-$8Z8 B Y Y$Y 8} sz }B%$I$t 8B Y 8sj RsA$j$k B Y }Bjs$9 I I$}Bj R 3$Z R ;wsd sti wad RYBb Y tb8sj$9 I t$bt BP Y }$ 9B j {${ Rs$t {B PP${$ t I BP Y Ikts8${ RsA$j$k RR PB ABY PZjjk {Z I {Bt% t$btsjjk }Bj I sti Y }s$sjjk {Z I {BBts }Bj I wβt]wdv_ \!*_V w_dx(d R} {$% jk yt ABY {sr R Y P$j8R -Y$A$ % k BBI Y 8sj RsA$j$k sti.14 3 2 Current/area (ma/m ).12.1.8.6.4.2 2 Current/area (ma/m) P r (mc/m 2 ) 25 2 15 1 5 P r (mc/m 2 ) 5 1 15 2 25 Temperature ( C) 3yp n qy 8sjjk R$8Zjs I {Z t 8 srz 8 tu {Z t\s s sti _ % RZR 8} sz PB }s$sjjk {Z I wβt]wd V_ \!*_V w_dx(d %$Zsjjk tb jbrr BP I bsr BAR % I }$B B s{y$t dx( ] VP dx( ] ABY P$j8R -Y$A$ I tb${ saj jbrr BP I YBb % Y PZjjk {Z I R} {$8 t R$jj s$t I sabz E( BP Y $t$$sj %sjz by$j Y }s$sjjk {Z I Bt s$t I j RR Yst 1( qy jbb %sjz BP Y }s$sjjk {Z I Bt 8sk A st s$ps{ IZ $t }s B $t{b8}j $8$I$9s$Bt w3$z nd 3ZY $t% R$s$BtR $t Y$R 8s s ZtI bsk qy Y 8sj RsA$j$k BP Y }Bj I s8b}ybzr }Bjk$8$I P$j8R I$I tb RYBb s R$t$P${st {Yst $t Y st BP Y 8 srz 8 t P JZ t{$ R PB8 d<9 B d((<9 PB ABY }Bj$t }B{ RR R ; ]Bt{jZR$BtR qy 8sj RsA$j$k BP Y s8b}ybzr }$ 9B j {${ }Bjk$8$I bsr %sjzs I sr s PZt{$Bt BP {Z$t sti }Bj$t {BtI$$BtR qy }$ 9B j {${$k BP Y$R }Bjk8 bsr RsAj ZtI ABY Ikts8${ sti Rs${ Y 8sj R$8Zj$ sti Rs$R${sjjk tb jbrr bsr BAR % I Z} B d(( ] qy }s$sjjk {Z I {BBts }Bj I }Bjk8 R -Y$A$ I $8}B% I 8st t }Bjs$9s$Bt 7$t{ Y$R s8b}ybzr }$ 9B j {${ }Bjk$8$I {st t s s }$ 9B j {${ R}BtR s j %s I 8} sz R $R Y 8sj RsA$j$k RYBZjI A A t P${$sj PB Y$Y 8} sz s BR}s{ s}}j${s$btr x V{,tBbj I 8 tr qy szybr s{,tbbj I * q k N 7 ]js$ BP WV7VTNsi] PB Y$R {Yt${sj $tr$y G sjrb s{,tbbj I $jj GY$ BP Gkj NsABsB$ R PB I % jb}8 t BP Y {Yss{ $9s$Bt 8 srz 8 t RBPbs x

% Retention of piezoelectricty, d 31 12 1 8 6 4 2 a t 5 o C 5 1 1 5 2 Final cycle temperature ( C) wsd 1Hz 1Hz 1Hz % Retention of piezoelectricty, d 31 12 1 8 6 4 2 a t 5 o C 5 1 15 2 Final cycle temperature ( C) 1Hz 1Hz 1Hz wad 3yp ;_ { t t$bt BP Y }$ 9B j {${ Rs$t {B PP${$ t I s x( ] sp {k{j$t Z} B x( d(( dx( sti 1(( ] wsd PZjjk {Z I Rs8}j w{bt% t$btsj }Bj$tU M(z\8 11( ] PB E(8$tD wad }s$sjjk {Z I Rs8}j w{bbts }Bj$tD REFERENCES >dh F! 7y_7!W 77 GeN]< sti qn 7 ]NVyi $ts $sjr PB 78s 7kR 8R yy e_ p B sj IR s i R 7B{ _B{ ;x BRBt V d }} nxdtnxe >1H F! 7y_7!W!=WVye7 sti ] 3VO $ts $sjr PB 78s 7kR 8R yy e_ p B sj IR s i R 7B{ _B{ ;x BRBt V d }} xte; >nh!=wvye7 ] _Vi F7 <Viiy7!W Fp 7yq< sti F <yw NeO $t 78s 7Z{Z R sti s $sjru ej {Bs{$% _Bjk8 V{ZsBR sti * %${ R O st]by t I _B{ 7_ye nee W b}b s{y ]V d }} ddtdm >;H <yn]ei sti F VNe] y ej { R 7ZI$ R $t ej {${sj sti ej {Bt${ et$t $t d; ejr %$ W b OB, } d dme >xh ]V _io*e F _Bjk8 7{$U _s VU _Bjk8 ]Y 8 1 wdmd } dd E

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