Äîêóìåíò âçÿò èç êýøà ïîèñêîâîé ìàøèíû. Àäðåñ îðèãèíàëüíîãî äîêóìåíòà : http://chem.msu.ru/rus/journals/membranes/24/html/mb_242.pdf Äàòà èçìåíåíèÿ: Mon Feb 13 17:56:08 2006 Äàòà èíäåêñèðîâàíèÿ: Mon Apr 11 05:33:44 2016 Êîäèðîâêà:

- .. , .. *, .. ** . .. .. , * . .. ** . .. ,
() ­ . - , ( ). , , , , , . - . : , , , . Surface enhanced Raman scattering spectroscopy (SERS) is the perspective method of the of the macromolecules analysis. In the presented work the nonlinear-optic properties of new type of SERSactive track nanostructures were investigated. The surfaces were produced by template method on the base of track membranes porous system (protruding structures and systems of hollow nanotubes). The correlation of the surfaces optical properties, geometrical characteristics of surface heterogeneity and the material parameters were found by methods of optical radiation of enhanced second harmonic generation, Raman scattering and estimation of linear optic properties of the new track nanostructures. Key words: track-etched nanostructures, non-linear optics, Raman-spectroscopy, template method.

1. , () 1973 [1, 2], - [3-7] . , , ( ) . - -, "" (, - , ) [8, 9]. , , -

() , . , , "" . . - - , () / . 2. 17

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-

[10-13], E loc ( ) :

^ E loc ( ) = L( )E 0 ( ) ,

(1)

E 0 ( ) ­

( ) () , ^ ef , . [16-18]. . : Pef(2) = L(2)·[fm(2) + N·(2)]·L2()·E02() , (3) (2) fm ­ ; N (2) . Pef(2) , , N = 0, ­ , , . , , . L( ) G . . : [19-21], [22]. , - , .

^ ; L( ) ­
. E loc ( ) E 0 ( ) . (, , ) E loc ( ) ( ) E 0 ( ) . , , , d ( - ) :

^ ^^ d( - ) = ef Eloc ( ) = ef L( )E0 ( ) , (2) ­ , ^ ; ef ­ , , [14, 15]. , d( - ) , D( - ) , d( - ) . ( - )

g = L' ( - ) L( )

2

,

L' ( - ) ­ , . g : G = g , G ­ , . , : 18

. . , 2004, 4 (24)


. . , . . , . .

3. - 3.1. ­ . 2. () (. 1). () (), (- (JSM-840, JEOL). ) (); 10 (JEM-100CX, JEOL, Japan). 2,2 /... -400 (- . .. - ( , . - ) ) [23]. . - , . - (Al, Cu, Ag) (p = 2·10-6 ) / . , ­ (. 2). , , . 3.2. , ( ), . 1. ( ) : ­ , (1) (2) . [2, 10, 16] (3); , ­ Eloc (4); ­ (5); ­ (6); ­ ( ) [10]. .
. . , 2004, 4 (24)

19


-

, , , = ' + i·'' : ' < 0. p, . , Eloc , . , . ( ) Eloc . , " " ("lightning-rod effect", ) [24, 25] ­ . , , ''. , ' > 0. : = ' + i·'' , ||. , ' < 0. ­ (a, b << , a b ­ ), E0, , :

­ ·Q1'()/Q1(), = a/(a2­b2)1/2, Q1 Q1' - . (4) , . , , . 3. L LLR, " ", a/b. (4), () |()|. L/LLR . LR(a/b) = L(a/b)/LLR(a/b) , . LR 1. , a/b " ". ,
|L| 10
3

1




1

102 10 2 1 |L| 102 10 1 4 3

3

2


4 5 6 5



6

0 10 20 a/b 0 5 10 15 a/b

. 3.
L (1) LR (2) LLR (3) ( ). LLR(a/b) (4), (5) (6) ( ). = 1064 ( ) = 532 ( ).

E loc ( ) =

( ) E 0 ( ) , 1 + [ ( ) - 1]A

(4)

A ­ a/b A(a/b) = 1 20

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. . , . . , . .

, . , : ( ''). . ||. 3.3. . . . [10]. (~1000 ). , ''. ( ), ( , . 1). h/r ( ) 100. , h/r a/b > 10. a/b ( ) . , , , .

YAG:Nd- = 1064 , f = 10 , = 15 W = 100/2. 2 = 532 -24, -79 . 2cp . "" [26, 27] s- , "" p- p-, s- . [27, 28]. W, I2(W) . , . . G2 . 1. . . , || || , G2 . , 21

. . , 2004, 4 (24)


-

1 . - ( 107 -2, 0,8 , 2/1; YAG:Nd, = 1064 , 10 , 15 , 100 /2) = 1064 ' + i·'' Ag Cu Al -58,1 + i·0,61 -49,1 + i·4,9 -100 + i·26 || 58 49 104 = 532 ' + i·'' -11,8 + i·0,37 -5,5 + i·5,8 -36,6 + i·11,5 || 12 8 38 G2 (5-10)·10 10 10
2 3 3

, E . , 350 ( , , - , [10]). a/b. - E, , - . - - ( - (4)). , . = 600 ( a/b = 4 - = 500 ). s- GLR 500. ( 50-100. ) GR 15 , a/b = 4 . = 500 , 45 E. E0 GR . 75 , E. - 75 (.. ). a/b = 1 15 3.4. . = 355 45 . E E0 S- , 400 500 600 700 800 , , . . 4 . 4. s- p- p- () s- (). 80 , . 2/1 ( ( ) p- a/b = 4), 8·108 -2. - = 15º, 45º 75º.
70 60 50 40 30

, %

20



10

0

70

60



50

40





30

20

10

0

22

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. . , . . , . .


75



N
, ..

4,4-
N

, . .

15



= 568,1 W = 30
1296 1010 1223 1595
1400 1600
-1

p -
0

75





1000

1200

,
15


s -
0

500

550

600

650

,

. 5. 4,4- ( 1296 -1),
( 80 , 2/1, 8·108 -2) p- () s- () = 15º 75º. 4,4 (). . 20 . Coherent Ar+ (Innova 90-5) Coherent Kr+ (Innova 100).

E, . , ( h/d = 1 ­ 6), , , . 3.5. . . 5 4,4- ( , ), . -

­ . 4. , , . , .

. 6.
L() = L(2c/) = (r1/r2)2 = 0,1 (); 0,5 () 0,7 (). Z ­ .

. . , 2004, 4 (24)

23


-

4. , , - , . . Eloc . Eloc , E0, (. 6). , . , :

2'', . 2() 2() = 1 ­ p2/·( + i·) (7) p = 1,3·1016 -1 = 1,1·1014 -1, . . 6 () = L() 1 = 2 = 1 (r1/r2)2 = 0,1; 0,5 0,7. . , (r1/r2)2 = 0,7 L() = 40 = 520 . 4.1. (. 7). () r1/r2, , L. 4.2. , . . : p YAG:Nd3+ = 1064 ~15 200 ~20 . ~100 /2. = 532 ,

E0, r < r1 Eloc(r)= E0 + 2 (d1r)r - r2 d1 / r4, r1 < r < r2 E + 2 (d r)r - r2 d / r4, r < r 2 2 2 0

(

(

)

)

(5)

r ­ - , Eloc, , ; r1 r2 ­ . (5) , , "" d1 d2 :
= 4·2·3 /z , = 2·3·(1 + 2) /z , d1 = 2·E0·r12· 3·( 1 ­ 2) /z , d2 = E0·(r12·( 2 + 3)·( 1 ­ 2) + r22·( 1

(6)
+ 2)·( 2 ­ 3)) /z ,

z = ( 1 + 2)·( 2 + 3) ­ (r1/r2)2·( 2 ­ 1)·( 2 ­ 3) ,

1 3 ­ , , 2 = 2' + i·2'' - . 24

. . , 2004, 4 (24)


. . , . . , . .

. 7.
­ (). (). (). r1/r2 , ­ .

. 4.3. ( ­ ) , : (8) d( ­ ) = ·Eloc() = ·L()·E0(), ­ ; ­ ( , - ). , , ­ , d( ­ ): E( ­ ) ~ L( ­ )··L()·E0(). (9) , (I) , , : I


, . , , , : "" [26, 27] s- ~10 p-. , , 2. , . (5-10)·102. , 10 . . , , , .

~ |L( ­ ) L()|2 |L()|4 .

(10)

, << . , 10 00

1



2
10 00

450

50 0

55 0

60 0

650

. 8.
4,4- ( 1296 -1).
(1) 30 , 30º ( ) : 200 , 600 , 108 -2. (2) ­ 200 . ­ . Coherent Ar+ (Innova 90-5) Coherent Kr+ (Innova 100). : s-, ­ 60º , ­ 20 .

,

. . , 2004, 4 (24)

25


-

, , 4,4- ( 1296 -1). , , (. 8).

5. - . - , (, ). 1011 -2, d = 30 h/d = 2/1. . . 9, 10. , , () . , ~1 ! - ­ . , . , ­ . . 10 , ( 2) , ( 1) [8]. , , . , 1000 -1.

. 9. , - , . : , ­ 1011 -2, h=80 , h/d = 2/1. . (1) (2) . ­ 1 . 514,5 , 30 . . - (3) - (4) . 1 , - ­ 1 (!). ­ 514,5 20 250 . 26

. . , 2004, 4 (24)


. . , . . , . .

, - , , . - , . 6. . , , . , . , . - , , , . () - . . .. .
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. 10. , (1) (2); (3). (4). ­ 1 . ­ 25 /. ­ 514,5 20 250 . 45â30â30 å3 (Phe3, Phe34 Phe38). - "" ( ) [8, 9] , , . , , . , . , .

2. 3.

. . , 2004, 4 (24)

27


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4.

17.

18.

5.

19.

6.

20.

7.

21.

22.

8.

9.

23.

10.

24.

11. 12. 13.

25.

26.

14.

27.

15.

28.

16.

28

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