Category Archives: Technical

Award for work using micro manipulator

Geophysical Laboratory’s Zachary Geballe Receives Seventh Postdoctoral innovation and Excellence Award

The Geophysical Laboratory’s Postdoctoral Associate Zachary Geballe has been honored with Carnegie’s seventh Postdoctoral Innovation and Excellence (PIE) Award. These prizes are made through nominations from the departments and are chosen by the Office of the President. Geballe, in Viktor Struzhkin’s lab, was awarded the prize for his scientific innovations and community service to the Broad Branch Road (BBR) campus.

Zack works on developing methods to measure the heat capacities of metals and silicates at high pressures. This work applies to developing new materials and studying the deep interiors of planets.   He developed a pioneering technique to measure heat in a diamond anvil cell (DAC) by using a method called the alternating current 3rd harmonic method. The work was published in two recent papers in the Journal of Applied Physics. Additionally, he devised new, sophisticated sample loading procedures into the DAC with micro-manipulator equipment. The new approach has changed the way the group loads very small samples for high-pressure experiments.

The nomination stated that “Zack is much more than just a very skillful and dedicated experimentalist, he is also the leader of our weekly Bread and Cheese seminar with research updates from our own scientists and discussions of high-impact papers from other groups around the world. “

Additionally, Zack was a founding organizer of postdoc-led poster sessions at the BBR campus (see photos and details from 20152016, and 2017), which have featured the work of nearly all the researchers and sparked new collaborations, approaches, and teamwork.

Carnegie President Matthew Scott remarked, “This cycle of nominations was particularly strong and it was a difficult choice. Zack’s exceptionally creative approaches to scientific innovation and his extraordinary volunteer efforts have made a significant contribution to the sense of community at BBR, making him the high caliber of researcher and colleague envisioned for the PIE awards to recognize. I congratulate him on his accomplishments.”

Luceo Fullauto StrainEye LSM-9000S

Luceo Fullauto StrainEye LSM-9000s

Fullauto StrainEye LSM-9000S is a fully automatic 2D-measuring device which measures retardation values and the direction of a slow axis in a transparent body having strain and birefringence therein. LSM-900s is equipped with 6 times optical zoom lens.

In order to measure direction and birefringence, conventionally the visual observation type polariscope using the Senarmont method is used. As well, our in-house manufactured product, Semiauto Senarmont which performs semi-automatic operations with the analyzer only manually rotated is also used.

The Senarmont method is an inspection method for measuring retardation quantitatively. An operator rotates the analyzer so that brightness of the part to be measured changes from the brightest state to darkest state, and measures its retardation by rotating the analyzer angularly. However, this conventional type has a problem such as the difference in decision of the brightness due to the difference in the condition during the measurement and also due to the difference in skill of each operator. Moreover, in Semiauto Senalmont, although the accuracy of measurement has improved from the visual observation type, the area to be measured is defined to the specific small portion in an image.

This Fullauto StrainEye makes it possible to start measuring immediately by only putting a sample on the polarizer. Therefore, retardation values and the direction of the slow axis can be measured easily. The measurement result is not influenced by each pixel of differences of personal skill. Not only a specific part is not subjected to the measurement but all of each pixel of a built-in CCD camera measures the entire detecting part. Since the direction of retardation and a slow axis are 2D-displayed on a monitor, those direction states are recognized immediately by the operator.

This instrument is suitable for measuring small samples since possible picture area is optionally variable from 60mm x 60mm to 10mm x 10mm based on being equipped with x6 magnification optical zoom lens for taking images.

This device is connected with a PC, and it is therefore feasible to save not only the measured data but also the observed image data easily.

With the use of super-luminescent LED as a light source, this detector is designed for long life and low power consumption. Accordingly maintenance and replacement of the light source as well as running costs can be reduced or dispensed with all together.

Specification

Size W200☓D280☓H595mm
Weight 11kg
Circulary polarizing plate size W70☓D70mm
Sample placement space height 0~70mm
Inspection Method Rotating analyzer method
Setting Wavelength 590nm
Repeat accrary σ=1nm
Measurement area size Varible (60×60~10×10mm)
Effective pixels 1100☓1100
Other Light Source:high-luminanceLED
PowerSorce:INPUT 100~240VAC 50/60Hz  OUTPUT 24VDC 1.5A
Component:Mainbody,PC,Cables
Accessory:Main body cover, AC Adapter (GS40A24-P1J)
OS:Windows7(64bit)/Windows8.1(64bit)
The latest movie:H28 製品技術大賞歪検査器「フルオートストレインアイ」Movie Fullauto StrainEye LSM-9000LE