Accurate computation of chemical contrast in field ion microscopy

An Accurate Perception Method for Low Contrast Bright Field Microscopy in Heterogeneous Microenvironments

Automated optical tweezers-based robotic manipulation of microscale objects requires real-time visual perception for estimating the states, i.e., positions and orientations, of the objects. Such visual perception is particularly challenging in heterogeneous environments comprising mixtures of biological and colloidal objects, such as cells and microspheres, when the popular imaging modality of ...

Contrast of microwave near-field microscopy

Constant-height scanning is demonstrated to improve near-field microscopy by eliminating artifacts connected with topography scanning, hence, to image the inherent electromagnetic contrast. Microwaves are chosen for this study because the long wavelength eliminates coherence artifacts, owing to a scale separation of wave and image frequencies. Measured amplitude and phase images of conductive f...

Best Image Conditions in Field Ion Microscopy

The Field Ion Microscope image quality is dependent on operational ? which can be adjusted in order to improve resolution and contrast, he best image operation conditions are discussed with the aim to define them quantitatively. To do so, a JWKB calculation for the ionization distribution is used and a new interpretation of the best image conditions is proposed. An approximate range for the bes...

Computerized Imaging System for Field Ion Microscopy

Accurate computation of field reject ratio based on fault latency

The field reject ratio, the fraction of defective devices that pass the acceptance test, is a measure of the quality of the tested product. Although the assessment of quality is important, a n accurate measurement of the field reject ratio of tested VLSI chips is often not feasible. We show that the known methods of field reject ratio prediction a re not accurate since they fail to realisticall...