Phase imaging TMAFM

TMAFM and Phase Imaging are proving to be excellent methods for the characterization of microbial attachment features. Maurice et al. and Forsythe et al. (5,... 

Figure 11.7 TMAFM phase images of poly(3-hexylthiophene)-b-poly(2-ethyl-2-oxazoline) (P3HT-PEOXA) diblock copolymers (a) 5 mol% PEOXA (b) 15 mol% PEOXA (c) 30 mol% PEOXA. Reproduced with permission from Ref [93]. Copyright 2010, Wiley-VCH Verlag GmbH.

Figure 11.24 TMAFM images of poly(3- (c and d) height and phase images of...

Figure 2.15 Tapping mode atomic force microscopy (TMAFM) phase images of poly(3-hexylthiophene) diblock copolymers (scan size 2x2 iu.m) (a) poly(3-hexylthiophene)-b-poly(methyl methacrylate) (15 mol % PHT) (b) poly(3-hexylthlophene)-b-poly(isobornyl methacrylate) (15 mol% PHT) (c) poly(3-hexylthiophene) b-poly(t-butyl methacrylate) (60 mol % PHT) (d) poly(3-hexylthiophene)-b-poly(t-butyl methacrylate) (15 mol % PHT)...

As mentioned above, the spm is mostly limited to sampling the near-sinface region of a polymer system. A new technique based on tmafm has been developed to enable volume imaging with the spm. This study tracked a series of height and phase images of a styrene-butadiene-styrene (SBS) triblock polymer microdomain as the surface was being removed 7.5 nm at a time with a plasma etcher. These data are illustrated in Figure 10 (65). 

Figure 3.7. TMAFM images of a (001) surface of an as-received EDT-TTF-(CONHMe)2 single crystal measured under ambient conditions (2.5 im x 2.5 j.m) (a) topography and (b) phase. The phase angle is defined as the phase shift observed between the cantilever oscillation and the signal sent to the piezo-scanner driving the cantilever.

Figure 1. TMAFM height (a) and phase detection (b) images (1x1 pm ) of the 14,500-63,000-14,500 MBuM copolymer (Sample A). The Root Mean Square roughness of the height image is about 1.6 nm illustrating the flatness of such a thin film. The phase contrast shows the morphology of the copolymer. The inset shows that the PMMA domains are locally arranged in a centered hexagonal structure.

Figure 3. TMAFM phase detection image (2x2 pm ) of the 30,000-63,000-30,000 MBuM copolymer film (Sample B).

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