HOME >> BIOLOGY >> NEWS
Microscopic sea creatures provide foundation for gas sensors and other devices

als that are more useful.

Ultimately, they would like to conduct such conversion reactions on genetically-modified diatoms that generate microshells with tailored shapes. However, to precisely alter and control the structures produced, further research is needed to learn how to manipulate the genome of the diatom. Since scientists already know how to culture diatoms in large volumes, harnessing the diatom genetic code could allow mass-production of complex and tailored microscopic structures. Sandhages colleagues, Prof. Nils Krger (Georgia Tech School of Chemistry and Biochemistry at Georgia Tech) and Dr. Mark Hildebrand (Scripps Institution of Oceanography) are currently conducting research that could ultimately allow for genetic engineering of diatom microshell shapes.

"Diatoms are fabulous for making very precise shapes, and making the same shape over and over again by a reproduction process that, under the proper growth conditions, yields microshells at a geometrically-increasing rate," Sandhage noted. "Diatoms can produce three-dimensional structures that are not easy to produce using conventional silicon-based processes. The potential here is for making enormous numbers of complicated 3-D shapes and tailoring the shapes genetically, followed by chemical modification as we have conducted to convert the shells into functional materials such as silicon."

Silicon is normally produced from silica at temperatures well above the silicon melting point (1,414 degrees Celsius), so that solid silicon replicas can not be directly produced from silica structures with such conventional processing. So the Georgia Tech researchers used a reaction based on magnesium gas that converted the silica of the shells into a composite containing silicon (Si) and magnesium oxide (MgO). The conversion took place at only 650 degrees Celsius, which allowed preservation of the complex channels and hollow cylindrical shape of the diatom.

The ma
'"/>

Contact: John Toon
jtoon@gatech.edu
404-894-6986
Georgia Institute of Technology Research News
8-Mar-2007


Page: 1 2 3 4

Related biology news :

1. Microscopic jets, diamonds unlikely on Uranus, and amazing mosquito legs
2. Microscopic passengers to hitch ride on space shuttle
3. Microscopic brain imaging in the palm of your hand
4. Little creatures, big blooms
5. Steep oxygen decline halted first land colonization by Earths sea creatures
6. Ocean seep mollusks may share evolutionary history with other deep-sea creatures
7. Sydney harbors seaweed a deadly diet for sea creatures
8. Seafloor creatures destroyed by ice action during ice ages
9. Census of Marine Life explorers surprised by diversity, density of Arctic creatures
10. New study suggests Concord grape juice may provide protection against breast cancer
11. Female gender provides an advantage in renal diseases

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:8/1/2019)... ... July 30, 2019 , ... Keck Graduate Institute (KGI) President ... Professor in Bioprocessing and Director of the Amgen Bioprocessing Center, effective July 29, ... and possesses more than 25 years of global experience in bioprocessing,” Schuster said. ...
(Date:8/1/2019)... (PRWEB) , ... August 01, 2019 , ... USDM Life ... and Solutions , will deliver a detailed webinar addressing challenges with the upcoming ... the area of UDI and has held a variety of positions over his 26 ...
(Date:7/24/2019)... ... July 24, 2019 , ... NDA ... a quality assurance expert with more than 20 years of experience working in ... has joined the firm as an Expert Consultant. , Dr. Hartzfeld has experience ...
Breaking Biology News(10 mins):
(Date:6/26/2019)... ... June 26, 2019 , ... Alice Branton today released research ... physicochemical properties of Magnesium Gluconate, which can prove to be beneficial for treating Hypomagnesemia. ... characteristic differentiation peak, change in crystallite size , Over 142% increase in ...
(Date:6/11/2019)... ... , ... Thought Technology Ltd is pleased to announce the ... Ltd as its authorised distributor for the UK and Ireland. , Thought ... clinical assessment protocols to treat stress related disorders as well as provide treatment ...
(Date:6/11/2019)... ... June 11, 2019 , ... ... Personalized Stem Cells Inc. (PSC) , has announced that their GMP facility for ... and Drug Branch for manufacturing. This is an important milestone for VetStem ...
(Date:5/31/2019)... ... May 29, 2019 , ... ... proprietary interest to our methodology, processes, and diagnostic techniques. The patent applications ... Somnology’s IP rights including our proprietary sleep scoring methodology. The approval and ...
Breaking Biology Technology:
Cached News: