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Summer 2011, Volume 27, No. 2

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Summer 2011 Volume 27, No. 2

Ribosome structure: A milestone of single crystal X-ray analysis

Akihito Yamano*

A ribosome is a vast assembly consisting of proteins and RNAs. The molecular mass adds up to approximately 2.5 MDa, and it is the largest asymmetric entity whose structure has been solved in human history. The first step of X-ray structure analysis is to acquire wellordered crystals of the target...

X-ray thin film measurement techniques VII. Pole figure measurement

Keigo Nagao and Erina Kagam*

Since crystal orientation and the degree of preferred orientation in thin films have a great influence on the properties of thin film devices, it is crucial for thin film devices to control the preferred orientation texture of thin film materials for applications such as light-emitting devices, ferroelectric memory and transparent...

Micro-area X-ray diffractometry

Keigo Nagao

X-ray diffractometry is a well-known method for analyzing samples of several tens of milligrams or more in weight or several millimeters or more in particle size.  It is used to identify substances in a sample and to analyze crystal quality, crystal orientation, and residual stress. Recently, new requirements of the...

Analysis of twinned crystals

Hiroyasu Sato and Akihito Yamano

Molecular structure determination has an important role both in fundamental science and applied sciences such as organic chemistry, inorganic chemistry, biochemistry, drug discovery, material chemistry, etc.  A number of analytical methods are routinely used to determine molecular structure: nuclear magnetic resonance (NMR), mass spectrometry (MS), infrared absorption spectroscopy (IR), X-ray...

Wavelength-dispersive X-ray fluorescence spectrometer ZSX Primus III+

The newly-released sequential general-purpose wavelength-dispersive X-ray fluorescence spectrometer, ZSX Primus III+ is the latest member of the ZSX Primus series. The ZSX Primus III+ with tube-above optics, a design based on the high-end ZSX Primus II system, has selected functions focused on daily routine analysis. The advantages of the ZSX...

Battery cell attachment

Lithium ion secondary batteries (LIBs) are widely used in compact mobile devices such as cell phones and notebook PCs. Current research and development at universities, research institutions, and companies seek to create LIBs for use in large machines, including electric vehicles. Meanwhile, competition in the development of LIBs has intensified...