MICROSCOPES, OBJECTIVES AND ACCESSORIES

Embryos, microscopes, and society.

Embryos have different meanings for different people and in different contexts. Seen under the microscope, the biological embryo starts out as one cell and then becomes a bunch of cells. Gradually these divide and differentiate to make up the embryo, which in humans becomes a fetus at eight weeks, and then eventually a baby. At least, that happens in those cases that carry through normally and ...

Elliptic Curve Digital Signatures and Accessories

Digital signatures have been used in Internet applications to provide data authentication and non-repudiation services. Digital signatures will keep on playing an important role in future Internet applications. There are two most well-known public-key cryptosystems, the RSA scheme and the ElGamal scheme, which can provide both digital signature and data encryption. More recently, the...

Microscopes for neurophysiology

Bioso£t's neurophysiology simulation program, Neurosim, has now been released as a Windows package. The new version has been completely rewritten to take advantage of the Windows interface. The user first selects the experimental and neurophysiological parameters desired for a particular simulation, and then runs an experiment. The computer generates a graphical display similar to that of an os...

The Greenland Kayak and Its Accessories

Monolithic integration of binary-phase Fresnel zone plate objectives on 2-axis scanning micromirrors for compact microscopes.

We demonstrated a unique monolithic integration of Fresnel elliptical zone plate (EZP) objective on a 2-axis staggered vertical comb-drive micromirror with 500 μm by 800 μm surface area via direct patterning of reflective binary phase modulation elements on a silicon chip. The need for focusing optics is thus obviated, simplifying the micro-endoscope assembly and improving its form factor. The ...