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Nanoindentation de couches minces déposées sur
substrat de verre de silice
Antoine Perriot
To cite this version:
Antoine Perriot. Nanoindentation de couches minces déposées sur substrat de verre de silice.
Mé-canique [physics.med-ph]. Université Pierre et Marie Curie - Paris VI, 2005. Français. �tel-00112005�
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h #Kf$$ K V K" " f $Vf e"eW Km kkk p K hKV" K " "$ "hK K e hf V hKV"K$ V" " feK$ " V" VKmf V" $ feK$ " hXV e"e$KV k z V KV eK$ $ K$ feK$ " K $ " eKKe$ Xf V K$" hK$ $ "f "V " f$e "V " $K$ KfX k pK fW VK V" f V " e K$ VK K$ K$ $" f k vVV e$ V K V$eK$ m$h " e f" " " "Ke K V #$K$ " $ " WX Kf$ KX kkk k v f"K $f"VKf VK K$ e $ K VK "Ke " #$ " $fK$ " V $ VK$ " VK$ " " eWK$VV k j KVW""f$V $e$ #K VK f" $f V $e$K V$ "" e Khe " $ f" VK K$ V i V$K$ "VK i $fK"i f KKfX W$ " $$X " hXV K " e$ f XV feK$ " ef Vi k dK V eK VK K$ K$ " "#K h h" " Vf V VK$ " VK$ " "i "Xf e$#" VK feK$ " mV#KV " Xf k q " #$ " i V$K$ K$K$K "VK " VV i $e $V eK$ Ke "$ " f$VV" ef W$ eWKe" e$#"$ e ff f$ k n K e $ " " " m K $ K "" "i Ki $e$ K "i dK" f$X K$""$K" #VXf " e" VKm feK$ " " Vf "#K V " $ K$ VK$ " k o X Kh$ K V eWK $ c V f XV Ke"VVf "$V$ " KKV V $" i $e K$ K$ " "#K"h""$ "$ " K eW f$KKV$ " " #VXf K" eWK $ b k t$V$K V "K$ K$$ K#V$ " e"$ " K Vm$Wf e K Ve"V fK $f"V K eKe V eKe VK$ " " $ " Ki$f$ " "Ve " " "#K h" Khe " K W$ Vf "#K KK$ k " eff K" eW K $ : V "VK #" " V hV"$ VK K$ " "$hKV " Xfe$ " K " eKe k v "$V$K V "VK #" " VK VK$ VK K$ V K eKe " f K" eWK $ ; " V fW eVK$ " KKV $ i $e K$ K$ $ "$ " " fK$ " " V K " eKe k " "i K eW " K e$m e " k " " WX "VK e K$ K" eWK $ g k dK " e K $ " " $ K" ef f VK$ " h $V$eK k v V h iW$# " ef f VK$ " V " $V VV$e$ V eWVV " f$e k " K V K" eWK $ < V "VK $e$ K "i "eWK V #hK$ f $$ " K "i e KhK"i f V$K$ VK$ K" ef f VK VK$ " h k " " ee " VK $V$e Kf W eW$$ eff Xf f XV " eff "$ V$ VK f$e ee $ r K fK eff " f$e K "m f K $ k dK V eWK $ " # " eKmK W$ K$VV " eWKf fK$ VK$ " #" V V $ K$ " eWK$VV $V$e Kf W k v "$V$ K VK f$e K "m r K fK" f K "$ h$ e " e K Ke$ " WfX e"$Km K VK $V$e Kf W k w e "i "VK " f " e WfX " " V $f K hK $ ef V VK fV$K$ " ef f VK VK$ " VK $V$e Kf W k o" eWK $ 9 " f eff "VK i $fK"i "h "$V$ " K#V$ " f V$K$ K Vf $ " ef f VK VK$ " VK $V$e K f W k o" eW K $ " "V " "VK " V hV" $ " f "V VK$ " VK $V$e Kf W e$ K $ k o" eWK $ c" feff V "$V$K$ VK V"f$ee " f$e "e"KV $e$ V $ n
3+
f h V" ef Vi V fW eKmK W$ f" V e"$Km hV e f " VK $V$e Kf W k " W$ "VK K" eWK $ cc k
dK e eWK $ " $ "$ V $ K$ fK$K"i fK$ " h" k " V KhK"i K" y K V fK$ " eKe " $ "$ V $e$ V eV VK fW sV$h q WKK$$ " "V " f $eK$"mm K" e" VK $X e$ k " "$ V V K" " Vf " V $ feK$ " f" K $ K$ Khe VK fW sV$h q W K k " $ "$ V f XV V V" e" " f V$ V hV"$ VK VK$ " Xf h" " " $ " k __ ^[\ ^\ [Z\ a $ V e$ X " fK$K" $ WfmX "f$ " VV$e$K$ feK$ " f " Ke$ $f V eK " $V $#V $ "i K ef f $ n k m" c k c 6 dK " f$ f VK fK$ " fK$K" h$#V $VV VK eK$ "#$ KV ef f VK$ " V$K$ k pK VK$ VK eK$ K V$ "
σ
VK fK$ε
"#$ K V fK$K" KV ieV"$hf "i KKfX $$X " K" fK$K" V f "V "mE
V e e$ q $ν
ef $ c k g K V #$K$ VK V$ yε =
1 + ν
E
σ −
ν
E
T r σ
I
c k cI
VK fK$e "$T r(σ)
VK Ke " " eK$ k 6 d K " e f K" V " eK$ "$Vσ
Y
0
$ V$f$ VK$e$ " fK$ $h$#V $ VK$ "ε
p
K" VK fK$ VK$ " h$#Vε
el
k d V" eK "h " VK V$f$ VK$e$ " f K $K"< hV" e$ VK fK$ VK$ " "#$ K e $
σ
Y
= σ
Y
(ε
P
)
k n WfX K V e"$Km k c k c n"# eK$ fK$ $" " K$ Ke$ $f V k U K " VK eK$ Ke$ K V$ " K" fK$K" $$" VK V$f$ VK$e$σ
Y
0
V fK$K" K " ef f VK$ " k o" V$V f VK$ "f k dKV#" eKKe$V ef f VK$ " fK$K"iVf$KVm$ $ "$VK$ " $"fK$K" o K " fK$K"xKVo V" " " x ! kj K$e $$Ke VKmfe$ VK mf$ " eKe VfKVV"m$K#V$ K$fKV$ $ K$ k z V Km$ K V$ " KV #$K$ " $ " $ fK#V mf$ e" " eWKmf fKV VK "Ke " fK$K" " $ k z V i$ f#" mf$ $#V k p V" "$V$ e m" c k b k s $ KV fVVf VK "H
" fK$K" eff V K VK eP
K V$ " " VK$A
Vf $ $ "VV #" K X eWKmfH =
P
A
c k b pK " K$$ $ e WfmX " eK$ k n K e fW hXV K $ e$V "$V$ " eKKe$ V ef f " fK$K" fK$ k v VK f" e" f " VK $ VK$ " VK$ " f K Kee $ef K"i K KfX $$X " " fK$K" k q " K V K VK ef KK$ K$VV f $ $V e eK$ K#V$ " f$VV" f V$K$ " eKe kc k b p $ $ $K$ fKV$ k
9 Z _]\ \ \ ^\ ^ [Z[ v c 99 b y " V #VXf "eKe VK$ " "i e KK#V$ K"i c k z V f Kff " K V eK V VK$e$ V$K$ $$$fKV e #VXf KfX eV"$ " eKe WX $m$ VK k " " $ $e$ e $ eK k " K V VK $$ " #VXf V "VK $V " " eff #$Xhf k # ($ ' a $ " f$ Ke VK$ "
E
f "V VK$ "E
e e$ q $ν
k a $ " $ " W$ " KR
$m$ k s " " VK WX K" eKe " VK " VV "f$ " e KVP
$$m hE
fKVf K "Ke k z V K $ f $ K W$ VK WX V f$ Ke k p #VXf Ki$f$ " " e e$ K V VK(O, ~
e
r
, ~
e
z
)
n k m" c k: nff $V " Kh$ $ K$ "i e eff VK WX $m$ VK "KeE
eW$ K " V m$ VK$ " e KV fK$K" $ mKV K" KhK$V feK$ " m K VK eP
k s $ "$ eu(r)
V VKef fKV VK "Keq(r)
VK eK$ fKV "$ V"$ K V$ " k s $ "$ V"δ
VK K$ VK WX K V f$ KeE
$ effu(0)
a
V K eKe VK WX VK "KeE
k s " eK " V e $$ K"i V$f$ e #VXf f$i k v K
∀r ≤ a, u(r) = δ −
r
2
2R
Le d´eplacement est d´efini sous le contact
∀r ≥ a, q(r) = 0
La contrainte est d´efinie hors du contact
c k : y eWeW KV $
u(r)
q(r)
" " V $Ke $ V VK$a
P
δ
k '% " #%$"% " ' ' dKVeK VVK$e$ V$K$$$$fKV"VW WX " VeK$ K V$ " " V fK$K" " V $ " $ "f fKV y K#V$ V i $ "$hK
∀r ≤ a, u(r) = δ −
r
2
2R
∀r ≥ a, u(r) = −
πR
a
√
r
2
− a
2
+
2
πR
r
2
2
− a
2
arcsin(
a
r
)
c k ;c k : a eWfK " eKe WX $m$ VK " eKe y
∀r ≤ a, q(r) =
3
2
P
πa
2
r
1 −
r
a
2
∀r ≥ a, q(r) = 0
c k gδ =
a
2
R
c k <P =
4
3
E
∗
R
a
3
c kE
∗
=
E
1 − ν
2
K V f "V "$ " fK$K" k s " f"V " e VK$ V effK$ "$hK 6 pK Vm"" eKKe$$ " " eKe V K eKea
eff V f c k < c k k 6 s eK " V KKfX e$hK V $ feK$ " K# V i $ c k < k nK$f e " V "K$e$ee$ $m$ K " e f"V K "$ " VK$ "f mf$ " "$ K$ hKV$ "V " $ V V$ " $ k vVV #" K V #$K$ " e $$ mf$ " VK e$ "Ke V$" " e$$ " V $ VK$ " " f$ KeE
Wfm$ k 6 v "$V$K V "K$ c k < c k $V $#V f$ V f "V "$ " fK$K" K$ VK e"# eWKm VKef e $$ " eV"$e$ VK$ " k n $ $e$" " V$f$K$ e " V K V$eK$ i $fKV VK$ K#V$ K y k n K V #" VKi e V$f$K$ " sV$h q WK K#V$ V" fW kc !Z \^ ^\ ^ Z_\ ^]Z ] pK fW sV$h q WK b Ke"VVfVK fW VK V""$V$ " KK V V "VK $ K$ k v "$V$K V KhK"i a ; $V e" V e$#"$ VK$ " e$#"$ VK$ " K "h$ VK e K e $$ K V "VV V K i$fK$ " ef f VK$ " $#V k p $ eV V" fW "h$ f$ V K
a
VK eKe K$ "V KKfX i $fKVf #hK#V k " " K# V $ $$ i $fKV K$ K$ k " $ "$ "$ V W WX VK fW sV$h q WK V "K$ "$ VK e$" k " "$ "V "eK V$f$K$ e fW Vf $eK$"mm " e" V #VXf "$ Ke$ k + %% ' $' '#'"$ 4/ 1 04 dX V " V eWeW KV$ " i $e K$ K$ $V h$ $ e$V " K$ eWVV Kee $ef KKfX $f K V K VK eKe K if V k s " K$ Kee $ef " $mK " i $fKV k d"i VV h$ $V K m$ VK e K V$ "P
VK K$δ
k pK $$Xf VK K$ " " eKeS
$ eff VK $h VK eP
K K VK K$δ
V " eWKm $$$fKV V $ " k n e $#hK#V " V $ $$ K$ K$ $"f h$ f" k pK m" c k ; f " K$ eWfK$ " " $ $$ K$K $ a $e$ K $f V k pK eP
K V$ " K $ "e$e "$ f "$h K hKV" K V #$K$ " e"K e$e"VK K VK ##$ k t eK " eK Ke$$ f K ee VK f" " VKef K #V" VK $ K$ K" #" VK "VV $" VK $ $ K$ k s #$ K$$ #" e VKef kq " #$ VK K$ K$ VKef $V K" "h$ f$ VK $$ $$$KV VK "Ke V eW K $VV K "h$ #$ " e"# $ K$ i V$K#V h$ m" c k g k q " e K$ i " "$V K$ " eKe "$ V " $V K $ $ " " VK $ K K$ VK "Ke VeWK$VV k s #$ K$$" e"# " eVV m" c k g KV hV"$ VK e K V$ " e$ VK K$ VK $ $ K$ K VK "Ke V eWK$VV k o VK eWKm VK e K"V " " hKV" K$#. +$%&-./)(&+*, /$*.2%(-/ &(%,*%,-*&.% /(,./ '*&,$0.(,/-*$'(3*%& '( *& %,/*$/(
% -/ /(/* '* + ,)( )$,()(.(, 3 ' &*$, $ $ ). %*%$%)(%,(./
*% %&,/.+(%,& ! #"3
cc c k ; r K$ eWfK$ " " $ $$ i $fKV K$ K$ k
h
f
ef $δ
e VK " V $ VK$ K V eWK$VV k q " Kh$ KeeX VK K$ " " eKe "i fW $$e "h "$V$ VK fW f" VK K$ " VK eWKm " VK fW f" e$" VK K$ " eKe k !" #$%& '( ) ( * $# * + ,) -. /0 1234 56 7 0 1234 c k g vif V e"# $ K$ k89% ) :%$, *'/&'(/(,./ '*&,$0.( ).% +*, /$*. *. ./& )( &% $%)(%,*,$% ++( '* -/-/,$%
)('* - % ,/*,$% 0.$ (&, '*&,$0.(&$,
(δ − h
f
)/δ
cb 7 / > p $ VK f" VK K$ " eKe VK eWKm $f V $V Km$ f" VK VK K$ eWKm VK e"# $ K$ VK eWKm fKi$fKV k q " e K$ sV$h q WK b K" VK e"# eWKm K " V$ "$Ke "
P = B(δ − h
f
)
m
c k 9 z V KV Ke$V hKV" K " $f V eKVe"V $hK$ VK K$ " " eKe K" $ eWKm fKi$fKVS = Bm(δ − h
f
)
(m−1)
c k s K K$$ KeeX K" $ V{P ; S; δ}
k n K eW " $f K V$f$ K$ V$ K" K$ " V "$V$ KVf " " "V $ VK e"# k a $ V eWeW #$ f" $ " $V K" KV KV$ V"$" K$ "ee$ k 7 >/ / / 7 7 n e #VXf e K e$ " h$ " V K eW K f" e$" VK K$ " k s KhK$ KeeXP
δ
" " VK e"# eWKm eWKm $V Km$ fK$K Kee VK K$ " eKeS
" VK ff mKff $ i $fK"i k p $e$ V K fW e$ K" K" eWKmf Kf K V$ " " V eWK$VV " eWKmf $" KV X K$#V Kf V$" g k nVK h$ K$ e" eWK " $ VK e"# eWKmf " eWKm $$$fKV k n$ V " eWKmf $" KV X K$#V Kf V$" " V eWK $VV k nff V VKef VK $ e" ieV"$hf VK h$eKV V #VXf $f Vff V$K#V K " e$VVK" WKf$ " Kf$ h$ m" c k <m¨
δ + (D
ind
+ D
´
ech
) ˙δ + K
rs
+ (K
bˆ
−1
ati
+ S
−1
)
−1
δ = F
0
e
iωt
c k c Khem
VK fK VK $ K$D
ind
kD
´
ech
V Kf$f V $ " k V eWK$VVK
rs
kK
bˆ
ati
VK K$ " "$ k " #$S
VK K$" " eKeF
0
kω
VKf V$" k VK "VK$ VK VV$e$K$ $" KV k q K "e K Ve"V K eVK$ " eWeW Kδ
"VKfδ
0
e
iωt+φ
δ
0
V K f V$" VK " Xfφ
WKKm K#"$S =
F
0
1
δ
0
cos φ − (K
rs
− mω
2
)
−
1
K
bˆ
ati
!
−1
c k cc nffF
0
ω
$fδ
0
φ
f" V KVKm KVK#VK
rs
m
K
bˆ
ati
f Kee VK K$ " " eKe " $ k z V " K$ " Vc : c k < r K$ VK Kf$ " " K$" eKe Khe VeWK$VV "f$ " VV$e$K$ $" KV K$#V Kf V$" k VK ef K $" KV VK " Xf K V #$K$ " V Ve" "e Ve$ k s #$ K$$ VK hKV"
{P ; S; δ}
" K" Vm VK$ e "$ f " "$h$ e$" VhV"$ $ fe K $ " VK "Ke k + %'% ' $" #' ' $)' ' " p#e$ VK fW sV$h q WK be$ $VVf "h$ K Ve$#"$VK$ " VK$ " VK " Xf k o$$$Vh$ $#V K$ VK K$ VK$ " VK$ "K$ KKV$ " "$ K y a kkk sV$h q WK V "i W WX "$hK p K eW K m $$$f K V " $" Ki$f$ " "Ve " e$ K V ff "K$ " VK eWKm " $ VK ff K$ eKe $ m" c k k v $ e$X VK K$" " eKeS
#$S = 2aE
∗
c k cba
V K " eKe k dK V eK " eKe "f VK$ " e "K$ "" hKVK#V k p$ $e$ e$ $ " ff $ VeWK$VV K "#$ " fK$ VK$ "VK eW K m $$$fKV K" "f VK$ " e V "K$ c k cb K V$ " kc; p mK $ e f"V " #$ "K#V$ $$$KVf " $" Ki$f$ " "$V$K$ " $" Kf$K"i V " V $ $e " xh$eW < 9 $"$ " $$" g
%
k dK VK K$ " K$f$V "h " $" Kf$KV e "$hKV $ eff KeV"$ VKe$ X VK ff K$ eKeA
" $Ke " ff VK $ k o$$ " $ xh$eW "$hKV " $" e$ " f$KmV K" ffω = 70, 3
o
k p K " e "$hKV " $" $" Ki$f$ " KV $ effa =
p
A/π
A
VK "Ke VK eKe k c k pK eWKm $$$fKV " $" f "Ve " "$hK" VK eWKm $$$fKV " $ VK ff K eKe pK i$h
s
VK "Ke Vi$" VK eKe " K" "f VK$ " $ m" c k9 k vh$ff hKV$ VVK"$ K V eK " eKe "f VK$ " e W WX K V eK " eKe VK VK$ "K"K V" hK$ " V e$X " $ VK "Ke V$m VK VK$ " k dK e $ eKeVK h$ " " VK fK$ VK$ "e "V eKe k sV$h q WK VKee KV eK" f K $K" WfmXVK VK$ " V$K$ VW WX " Vef f VK$ " " fK$K" $ $$ K $$ K" $V" m" c k k n $ eKKe$ K VK fK$ #"V VK$ " K"" V K $K K$$ $hKV$ VW WX " i$ VK$ " W " eKe h$§
c k:k ; k + + '% % #&"% $)' ' " pK fW sV$h q WK ef $ "K$ k pK f$X K$ " e$" c k cbE
∗
=
S
2βa
c k c :β
" e e$ ee" V c "$ ef VK Ki$f$ V$" k n "K$ "$ V f"V "$ " fK$K" K$ VK K$"*/ '* &.$,(&*.-/ $&$% %,/*$/(% *&&$+$'(/* ,. ./& .% $%)(%,(./ %$0.( %%*2$&+ ,/$0.(
&% %( 0.$1*'(%, (% * .,*%, *. (&$% )(& ( $(%,& //( ,(./&3
$ '$%)(%,(./ %(&, -*&*2$&+ ,/$0.(
a
cg ! "#$ % & ' ( &)( *+ , - ./ 0 1 #/ 021
S
02$2# 3#1 -a
2#4 5 6 26 # - "#$ % #h
c
# ## # $ # 7 #h
s
# 83 # % 9 3 ! #δ
0$ 9! 1: # $ ;h
s
= δ − h
c
0<1 = #-4h
s
# : 2 # $h
c
= δ − ε
P
S
0>1 ?ε
4 # ! # 0ε = 0.75
4ε =
π
2
(π − 2)
@1 A# # 7#: # ! # : # $# -a
; ##h
c
5 /2 # ; # 2 : ## $ 4
h
c
9: "#$ % $# #H
# 2 # 7 # $H =
P
πa
2
0 1 " 7 9 7 $# ## 2 # # ; 7 # # 7 # # 7 # ## : 9 # ; # 7 # 7 # # 7 # ; # ! 7: # "#$ % # # ## - # # #! ! "#" $%& '( )# !* " $'( ' ) +(, (" - #,, (" ., &( (% / $!."( '( / $,,( / " $%& " $ $ # "#$ % 2 -4: 6 $#0 # / 2#4 # # # # "#$ % ## $ # # !! - 1 23 456789:; <= >?8;@=> AB C B # D $§
E: #C F 4 FC # GC B B F F 7 C #C F-B GC # H B C GC B #C GC # B GC GD "#$CF C %FF:a
C $# B #D- B 4C GD B B FCC C ./ "F: #C B 4C GC #C/ C FC B FC B F C G # F C # B F C #D B DFC C ; GC F 3 F4 B " C C FC # B F 7 C #C F-B GC B C B /$# F 0>1 0$ B F 9! FC I1 A CC CFFC F G C FC B B CC GC $#C F G B G #C FGE
∗
0F B B F B C# ;a
1 C F B GC # G FCH
0F B B F B C##C ;a
2
1 J,K L M N O P Q L M O RS Q T O *+ I CFC B C GC #DCFFC F F #C F-B GC B G C F # FCC GC #C/ U# B F C #C F-B GC B Ca
r´
eel
: #D # B GC 0>1 B C B 4 C GC ./ 5 C F-B GC B C # B F $# ! # ;a
evalu´
´
e
C GC2C FGC # B GC #DGC B F B GC GC#C9 JIK C C G B F C : G #C GC GC B B C : #C FC B F # C FCC FC F ; I B B 4C B /!#!C2#C GDF B !C #C :#C B 4C GC #C/ FCC !#!C2#C #C B ? #C B 4C GC #C/ DC !#!C2#C: # C B 2#C GD$# CF #DFC GC B ; # F!C 3#C C !C #DCFCC FG C##C GC #DGC F4 GF!C J,: K 5 C F B 2#4C GC C##C F B C C #C C C C# GC # C FC GC # FGC FGC B F # B GC GC # GF!C C B F2C GDGC B C 7 B F D C B GC C FC $CFC C GC FCCFC B C##CC C3# B FC $C B F B 26C7 GC B $ B F CC CF GC C FC B # B ! G F!CC JE: : <K 1 73 456789:; <; 82 65:; ; ;?; <; 8?<;;=5 5 D FC - B 4C 7C F "#$CF C %FF B FC F # GF!C 9#C GC #DGCC F B GFC B C #2#C ; # GF!C 9#C G C GCC F B 2C C F F FCC # C 5 C F B 2#4C C C CC F B C !#!C B B F = #C B # C C B / B 7 B FC: # G7 B F B # C 2C F #D## B C FG F # CFC GC CC B / B 7 B F 5 GF!C GC #DGCC F DC G B # GFC F #C B GC # B C F GC/CC: F #C B GD GCC F F C F7C G6; G7 B FC 0$ B F 9! FC 1 !" # $ $ % % !" # # # # & ' ( & ' ( & ' ( % & ' ( ) ** )+ , -.) -/ 0 )/ , )12 3 45) *+ CFC B C 0FC GC J>K1GC B C # B FF B G FC # B B GC 7 B FC CC$C GC #DGCC F 5B F GC # GF!C: #DGCC F DC G6; # C B B / B 7 B FC $C #D## B G 7 GC # FCC GC #DGC 5 C B C C FCCF ; B B / B 7 B FC: $C GCC F GC 7 B FC GFCC FCFC #C # # G$C# B F = CGG B J<K G #C G B B C: GFC C F J : : K B B F C #C B B 7 B FC CFC #DGCC F C B B B
B /G7 B F C GCC F GC 7 B FC CC$C GFCC GC # 7 B FC FC##C GC #DGCC F 5 B FFC B ; B FCF B FC # B F F # $#C F G F 4FC ! B F C
ε
U: Bε = m
1 −
2Γ
m
2(m − 1)
√
πΓ
1
2(m − 1)
(m − 1)
01 B ? C #C C F4FC C C# F B G G#D6 CCGC # B F2C GC GF!C # B F $# CF # FGC F GC B F # B GC GC # GF!C 0 0 11 # F C: #DCC GC CC B FFC B C CH 72#C:G # C FC B ? # $F B GCε
C B FC CFC I < C I 13 6@?<28? <; 82 >6?; ; 6;?; <; 46?6 %F#DF B G B GD F4FCβ
G#D B 01:"#$CF C %FFCFC ; B FF!CF #C 7 C #C B C -FG#C 0CF. B $:.CF:1 C B G#CC 3-F C 5 C $#C F D# F B B C G # 2# B GF$ #C F B GC JEK B FC GC F$ 3 FGC J,K B ? C##C B $# C B -C GC # B F #C 9 C GC B 2FC 3 C F C B FC ; #D$# B GC C F4FC J EI: EK 5 C F F$ 3 B B F C CFC GCGC GC # $#C F GCβ
$C #C B CC GC % B B G F GC 5 C $F B G F4FCβ
G #C GD GCC F B F C #DGCC F CF. B $ C2#C CCG B FC CFC IE C I J>KA# D! G B GC B FFC B G B #D B FGFC GC !FGC F FCC CH C GC$ #C CF GC GC C FC 5 DGC B F CC: B #C $C C B GC B FFCC GD#-C GC G B C C3FC#C: CFC C FF B 7C GC F B F C GD F 7 A CC B GC F B $C B C B F G # D GC GD ## B F B C B F B 7F!#C B F C GC C # GFG 0F B 3#C:8C3 B < B : 1 C FC F# 5 D# B # # B FC GC CC B GC C3/ F C #C FCC B # FF B C GC FC$C C C GC F7 C " C C FC CCG FGCC F B 2#4C GC #DC F 9C G FC$CC0 B FC B #C F # B 2C CF CC # B F GC #DGC B GD 2F FC$ C #C F CFF B*&)"#"& (!. , (&
C # ##C FF C G B 0C #C F-B GC # H B C GC B 1 FCC B B B
, 9# 7 # F C: C DC CCG # B 2#C G4 # B F C #D B B G4FC 9# C U: B CFCF C 03 J EEK B B 2C : C # # B GC GD"#$CF C %FF F -4C FC$ GD 9# C: C $ B # B G B G #C FG C F B F G F!CC: C# B G #C $#C FG A CC $ B # B C ## FC F # 9/ ! FC E G #C GD $CFFC B G B # C FC$ GD 9# GC #C GD C C F GC C# C CC GC B 4FC " C G! CF F B C GC G #C F!CC U 72#C F B : #C B G #C FG G 2F FC$ C B C !# ; C# G 9# 5 C -4C C B B FC G B GC # C 7 B C D# D! GD ## B 7 B B !4C B G F G 9# U F4 7 B FC F B : #C B G #C FG G 2F FC$ C C B FC B CC 7 B !# ; C# G 2F 5 C -4C C B B FC C3CC B C D# D! G D ## B GC 2F C !C CFGFC GC F B : #C B G #C FG G -4C !/ CC B C $C # F B :CC C F B CFC # H B C 9# 7 C # H B C 2F !"#$ %&'!"#$ %&'!"#$ () * ) + , -+ . /* 0 *1 2 3 4 5 6 7 8 5 6 9:7 ; 3 4 5 6 7 8 5 6<6 = < > ?@ > ABC D DEFF BG H I J F K LE K MI N OMP Q P K LEMF B K B OM *+ E $ B # B $C G B G #C $#C FG B 2C F # B GC GD"#$CF C %FF F $CFFC B G B # C FC$ GD 9# GC #C GC C# C CC GC B 4FC B F GD C B GC B CF. B $ % B F GC F4 72#C F B : #C B G #C FG G -4C C C# G 9#U C FC C # F B !CC: #C B G #C G -4C !CC B F CGFC #C B G #C G 2F ; 7 B FC FF B 5 DCFF B GC C B 4C C C 7 CH #C FCCF C: ; 72#C F B : #C F-B
a
G B FCC C GC$ #C GC B G 9# C G BRST UVWXYZ [V\Y]^__T`\Z ]a_ZYbVZ c dYX_ e]YdZ fV`VdYTd^]` fZgd hdYZ TddY^agVZ c [Z_ fiV`]jX`Z_ [Z
k
__gYTd^]`l`]dTjjZ`dZ`dYZUZ k
Uj Zd UZ_ga_dYTdlmg^ dZ`[Z`d c YV[g^YZUT Y^W^[^dV\]jf]_^dZ [g _n_dXjZ
EI #C -4C C B B FC B C #C 9# 7 U C FC C #C F-B G B F B : # B F2 B G 2F ; # G7 B F B G C$C GC # C # B FC AB C #C 2F C # FGC C #C 9#: # FGC F B B C GC #DCC2#C F B 9: ; F4 7 B F F-B GC B : # B F2 B G 2F ; # FGC F G -4C GC$C F4 !FGC GC$ C##C G 9#:G B #D8 CC GC$C !#!C2#C A CC CFF B C C FC#C7 B B F: ; C FC C #DC F G 9# G C: # H B C 9# 7 GC$C GC # C # FG C A# FF$C CH 7F CC: # B F C #D B CFC ; GCF FC$CC F4 9: C #D B D- #CC 4 A# GC$C # B F CFC GC B $ B F C3FFC:; FF GC # H B C GC F B :#C F B F C G 9# $'*) &#" $%& ' !$')( * +#)(%" = # B G# B G B B FCC G 2F FC$ G #C H B C 9# 7 C 2F C B C GC F B 2#4C: # GCF B GC #D$ B # B GC B F2 B FC#$C G 9# C G 2F B F GC #DGC B C F$4#C CH B #C3C " CFC C !F# ; B G#CF #C B G #C $#C FG G 2F FC$ B # 7 B FC GD C # B GC #!C G -C
E
eq
∗
= E
sub
∗
+ (E
f ilm
∗
− E
sub
∗
)Φ(a/t)
01B ?
a
C #C F-B GC B :t
#DC F G 9# CE
∗
f ilm
0FCE
∗
sub
1#C B G #C FG G 9# 0FC G 2F1 5 C 2 GC GFC B G4#C C # B F GC F B B CF C 7 B BΦ
FCG B C GC #DC3FCC " C #CF #C B G4#C F B B C F B !FGC 7##C #C B G4#C CF C: #C B G4#C #- C F B C #C B G4#C C/ F C 0 B B #CF B C G B C # C GC CC GC ; GC B GC FC FCC # C 1 23 6<98; ;:>?5?=; " C F C 2#CF G C C ! B FC B #C B G4#C F B B GC FCGFC B FΦ
C 7 B B #C CFC GD6 CF !F CC # 7 B FC GC # B F2CE
∗
eq
= f (a/t)
" CF F C 3/ #C B G4#C C3 B CC#: B F #C C# BE
∗
eq
= E
sub
∗
+ (E
f ilm
∗
− E
sub
∗
)e
−αa/t
0,1 C #C B G4#C GC B CFCF C 03 JEEK
1
E
∗
eq
=
1
E
∗
f ilm
+
1
E
∗
sub
−
E
∗
1
f ilm
!
e
−αt/a
0EI1 #C GC 3 : B G B C GD F4FC 6 2#Cα
FC##C !9 B - C A C B G4#C B G B 7#C ; #CF J EK B C DCFF B !CF F #C FE 1 73 6<98; 228 ?=; 2>>56 A DC B F CC F B C GC F$ 3 B C B F B G#CF #- CC #C B F 2F FC$ 5 C B C C 6C CCG B #C3C: CF C F B CF ; F B GFC #C F B 2#4C GC 7 B F B C 5 DF B C # # B C G F B 2#4C C C##C GC B C B ## JE<K # C F B C C F F2$C F #D CF!C # C: B C B CF$ #C GC G7 B F B B 2C G #C G -4C B B !4C: B C B ##2 B C 3 # B GC #!C $C
ν
eq
= ν
sub
+ (ν
f ilm
− ν
sub
)
2
π
arctan(t/a) +
t
πa
ln
1 + (t/a)
2
(t/a)
2
0E1 Cµ
eq
= µ
sub
+ (µ
f ilm
− µ
sub
)
×
2
π
arctan(t/a) +
1
2π(1 − ν)
(1 − 2ν)(t/a) ln
1 + (t/a)
2
(t/a)
2
−
t/a
1 − (t/a)
2
0EE1 B ?ν
eq
Cµ
eq
= E/2(1 + ν
eq
)
B FCC$CC #C B CC GC % B B C #C B G #C GC ##CC $#C G 2F FC$ :ν
f ilm
Cµ
f ilm
0FCν
sub
Cµ
sub
1 #C B CC GC % B B C #C B G # C GC ##C C G 9# 0F C G 2F1:a
#C F-B GC B Ct
#DC F G 9# 9:GDF4 #C G# GC # # JE<K:ν
C #C B CC GC % B B G -4C B B !4C $ CF F2 B G C# F B $C #C GC G7 B F B B C B ## C F # 72#C 8 CC GC # $#C F FC Fν
F 0 EE1 5 D # B F C C C 7C F C. C B ## J EK F B G ; C##C #C F B 2#4C GC 7 B # #Cν
f ilm
C B !# ;ν
sub
C # B FC: 0 E1 D # GC F B GDFC C 0EE1 GC $CE
∗
eq
= E
sub
∗
+ (E
f ilm
∗
− E
sub
∗
)
×
2
π
arctan(t/a) +
1
2π(1 − ν
sub
)
(1 − 2ν
sub
)(t/a) ln
1 + (t/a)
2
(t/a)
2
−
t/a
1 − (t/a)
2
0E1 C GC F C F #C 9 J E<K C C3FC#C J EK $#GC C B G4#C B F GC B FC GC B G #C 7FC F ; E 00.5 < E
∗
sub
/E
f ilm
∗
< 2
1 C F B C CH #FC B #C G # F C C C##C GC B C JE>K: B ? C C 7 B #C C F F2 B B FC F #C GC B FC 9 G D FCF C B G B GDG B F7C ; #DCF7C 9# 2F 9: C F B 4C F B C C C##C G$C# B C F C C B ## JK AB GF GD C F C #C -4C 9# 2F C FC B G# F GC FGC F C FC: # B C C FGC F G B C FS
sub
= 2aE
sub
∗
CS
f ilm
= aE
f ilm
∗
πa/t
A# F$C # B
F
C
S
eq
−1
= (f (a)S
f ilm
)
−1
+ (g(a)S
sub
)
−1
0E<1 B ?
f
Cg
: FCCFC B # 7 B FC1 + ka
n
:G B $C !FF C: #C 9# C F4 B B 4GC #C C F B F # C C #C 2F: B FCF B $C 2CS
eq
= S
f ilm
EE A# 2 B C # B F ;