Hiển thị các bài đăng có nhãn microscopy. Hiển thị tất cả bài đăng
Hiển thị các bài đăng có nhãn microscopy. Hiển thị tất cả bài đăng

Thứ Bảy, 17 tháng 1, 2015

Quasicrystals

Quasicrystals



The book provides an introduction to all aspects of the physics of quasicrystals. The chapters, each written by an expert in this field, cover quasiperiodic tilings and the modeling of the atomic structure of quasicrystals. The electronic density of states and the calculation of the electronic structure play a key role in this introduction, as does an extensive discussion of the atomic dynamics. The study of defects in quasicrystals by high resolution electron microscopy and the computer simulations of defects and fracture in decorated tilings are important subjects for the application of these aperiodic crystals.




Thứ Sáu, 16 tháng 1, 2015

Under the Microscope, 5

Under the Microscope, 5



This is a brief history of the development of microscopy, from the use of beads and water droplets in ancient Greece, through the simple magnifying glass, to the modern compound microscope. The technology and optical theory are developed in a straightforward manner, and this leads to a description and explanation of the most modern technologies in electron microscopy, and scanning electron microscopy as well as the new scanning probe microscopies. A series of very interesting applications of the various microscopic techniques are described. The most recent pioneering techniques in near field and confocal optical microscope technologies are described and evaluated for their future importance.