Dynamic photo-induced force microscopy
- PDF / 185,864 Bytes
- 6 Pages / 432 x 648 pts Page_size
- 38 Downloads / 188 Views
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ω ZKHUHDV WKH VHFRQGRUGHU UHVRQDQFH DW ω LV DFWLYHO\ GULYHQ E\ FPiF 6LQFH WKH EHDP LQWHQVLW\ LV PRGXODWHG DW I + FRV ωt E\ XVLQJ DQ DFRXVWRRSWLF PRGXODWRU $20 ZKHUH I LV WKH LQFLGHQW EHDP LQWHQVLW\ WKHQ WKH SKRWRLQGXFHG IRUFH LV DFWLQJ RQ D FDQWLOHYHU ZLWK FPiF + FRV ωt DW WKH VHFRQGRUGHUUHVRQDQFH>@,QDGGLWLRQWKHFDQWLOHYHUWLSLVVXEMHFWWRWKHLQWHUDFWLRQIRUFH FLQW ZKLFKLQFOXGHVDOOUHOHYDQWYDQGHU:DDOVHOHFWURVWDWLFPDJQHWLFFKHPLFDODQG&DVLPLUIRUFHV ,QWKLVPRGHOZKHQZHDVVXPHWKHPRWLRQRIDFDQWLOHYHULVDVXSHUSRVLWLRQRIHLJHQPRGHVWKH HTXDWLRQVRIPRWLRQIRUWKHGLVSODFHPHQWRIWKHILUVW z t DQGQGRUGHU z t PRGHDUHIRXQG DV
103
mz + b z + k z = F FRV ωt + FLQW z t + FPiF z t
mz + b z + k z = FPiF + FRV ωt + FLQW z t
ZKHUH P LV WKH HIIHFWLYH PDVV RI WKH FDQWLOHYHU ki DQG bi DUH UHVSHFWLYHO\ WKH
Data Loading...
