High-resolution scans

Crewe A V, Wall J and Welter L M 1968 A high resolution scanning transmission electron microscope J. Appl. Phys. 39 5861-8... 

Typical High Resolution Scan Showing the Multiple at Mass 260. . 

Fig 10 A typical high resolution scan showing the multiplet at mass 260... 

Figure 1 shows narrow range high resolution scans of the molecular ion region of NDMA, recorded near the maximum of the GC peaks, present in one of the beer samples prepared in the AOAC collaborative study. The peak at m/z 74.0480 represents approximately 0.15 ng of NDMA injected on the column, corresponding to a concentration of 0.6 yg/kg of beer. Use of high resolution MS permitted confirmation of the identity and amount of nitrosamine without additional cleanup of the concentrate prepared by the AOAC method. Sample quantity requirements were comparable to those of the TEA. 

High-Resolution scanning electron and atomic force microscopies observation of nanometer features on zeolite Surfaces... 

It is now possible to observe nanometer features on the surfaces of zeolitic materials using high-resolution scanning electron microscopy. By taking ibidem measurements in combination with atomic force microscopy we are able to illustrate the strengths and weaknesses of both techniques and judge respective resolving power. 

Tanaka K, Matsui I, Kuroda K, Mitsushima A. A new ultra-high resolution scanning electron microscope (UHS-TI). Biomed SEM 1985 14 23-25. (in lapanese)... 

Tanaka K, Mitsushima A, Kashima Y, Osatake H. A new high resolution scanning electron microscope and its application to biological materials, in Proc Eleventh Inti Cong Electron Microsc, vol III (Imura T, Maruse S, Suzuki T, eds.), Publication Committee of the Xlth International Congress on Electron Microscopy, Kyoto, lapan, 1986, pp. 2097-2100. 

The FTICR analyzer is relatively slow. In a low resolution mode (<25,000 FWHM) scans can be performed in substantially less than a second. A high resolution scan is more time demanding, and more than 1 s is often required for mass resolving powers of 100,000 or more. 

Goldberg MW, Allen TD. High resolution scanning electron microscopy of the nuclear envelope demonstration of a new, regular, fibrous lattice attached to the baskets of the nucleoplasmic face of the nuclear pores. J Cell Biol 1992 119(6) 1429-1440. 

Blackson, J., Garcia-Meitin, E., and Darus, M., High Resolution Scanning Electron Microscopy Examination of Polymer Morphology, Microscopy and Microanalysis, 13 (Suppl. 02), 1062 (2007)... 

A typical DNA array fabrication and application process involves three major steps. First, nucleic acids (the capture sequences or probes) are immobilized at discrete positions on surface activated substrates. Secondly, the resulting array is hybridized with a complex mixture of fluorescently labelled nucleic acids (the target), and thirdly subsequent to hybridization, the fluorescent markers are detected using a high-resolution scanning laser that quantifies the interaction. This chapter focuses on the first of these processes and provides the reader with an overview of substrates, surface activation methods and dehvery systems available for nucleic acid immobilization. 

Stolyarova E, Rim KT, Ryu S et al (2007) High-resolution scanning tunneling microscopy imaging of mesoscopic graphene sheets on an insulating surface. Proc Natl Acad Sci USA 104 9209-9212... 

H. Ngo, G.J. Mount, M.C.R.B. Peters, A study of glass-ionomer cement and its interface with enamel and dentin using a low-temperature, high-resolution scanning electron microscopic technique. Quintessence Int. 28 (1997) 63-69. 

Although the focus of this chapter is tropospheric HO measurements, it is worthwhile to mention techniques that have proven useful in the laboratory or in other regions of the atmosphere. As a small molecule in the gas phase, HO has a much-studied and well-understood discrete absorption spectrum in the near UV (29), shown in Figure 1, that lends itself to a variety of absorption and fluorescence techniques. The total atmospheric HO column density has been measured (30-32) from absorption of solar UV radiation, observed with a high-resolution scanning Fabry-Perot spectrometer. Long-path measurements of stratospheric HO from its thermal emission spectra in the far infrared have been reported (33-35). Long absorption paths in the atmospheric boundary layer have been used for HO detection from its UV absorption (36-42). 

Fig. 17. The He(I) UPS of ferrocene (a) full spectrum, (b) high-resolution scan of the first two band systems. (From Ref. 123.)...

High-Resolution Scanning Transmission Electron Microscope (STEM)... 

No significant difference is observed in the locus of failure data for the APS treated samples presented in Table 2. A closer look at the XPS high resolution scans as shown in Fig. 4 supports the interpretation that the failure is within the polyimide close to the PI-APS interface, but not at it. This is in particular verified by the presence of C=0 C(ls) peak at about 288.9 eV, ji-to-jr transition peak, and the N( 1 s) peak at 400.8 eV due to imide nitrogens. 

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