Scanning electron microscope/microscopy micrograph

Other researchers helped further electron microscopy technology. Ladislaus L. Marton of Brussels assembled the first micrograph of a biological sample, while Manfred von Ardenne of Berlin constructed the first scanning electron microscope in Berlin in 1937. At the University of Toronto, Cecil Hall, Albert Prebus, and James Hillier built a model of the... 

The extent of dimensional stability of the part after feature replication was divided into 2 parts. For microfeature analysis, scanning electron microscope (FE-SEM, S-4800, Hitachi, Japan) was used to calculate the differences in the dimensions of the tool and the part. For nano-feature analysis, both scanning electron microscopy (SEM) and atomic force microscopy (AFM) were used to calculate respectively the width and the depth of the features. Percentage shrinkage in the dimensions of polymer parts was calculated from the SEM and AFM micrographs. The feature morphology and quality of replication was clearly evident from the SEM and AFM micrographs. 

Fig. 6.1. Scanning electron micrographs showing the different surface textures of red (Er) and white blood cells. A Cells within a blood vessel. B,C A comparison of scanning electron micrographs with conventional light microscope images of the same field of stained cells. Enlarged pictures at the right emphasize the different surface textures of monocytes (Mo) and platelets (PI) in D, lymphocytes (Ly) in E, and neutrophils (Ne) in F. From Kessel RG and Kardon RH (1979). Tissues and Organs A Text Atlas of Scanning Electron Microscopy, WH Freeman, NY.

A different technology used by third-generation sequencers is the one developed by companies such as Halcyon or ZS Genetics that uses a rapid-scan tunneling electron microscope to read the DNA chain directly (44). DNA bases have to be labeled with heavy atoms to make them visible under the electron microscopy. Each nucleotide is tagged with a characteristic heavy label so that they can be distinguished in the transmission electron micrograph. 

The Scanning Electron Microscopy (SEM) micrographs were obtained on a Zeiss DSM960 microscope operating at 30 kV. 

The most notable finding from studies of powder morphology is that the Ticona resins are characterized by a fine network of submicron-sized fibrils that intercormect the microscopic spheroids. The fibrils are illustrated in the scanning electron microscopy (SEM) micrograph in Figure 2.5 (provided courtesy of Rizwan Gul [1997]). 

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