Navigation Links
Explosives at the microscopic scale produce shocking results
Date:12/11/2007

LIVERMORE, Calif. -- U.S. troops blew up enemy bridges with explosives in World War II to slow the advance of supplies or enemy forces.

In modern times, patrollers use explosives at ski resorts to purposely create avalanches so the runs are safer when skiers arrive.

Other than creating the desired effect (a destroyed bridge or avalanche), the users didnt exactly know the microscopic details and extreme states of matter found within a detonating high explosive.

In fact, most scientists dont know what happens either.

But researchers from Lawrence Livermore National Laboratory and the Massachusetts Institute of Technology have created the first quantum molecular dynamics simulation of a shocked explosive near detonation conditions, to reveal what happens at the microscopic scale.

What they found is quite riveting: The explosive, nitromethane, undergoes a chemical decomposition and a transformation into a semi-metallic state for a limited distance behind the detonation front.

Nitromethane is a more energetic high explosive than TNT, although TNT has a higher velocity of detonation and shattering power against hard targets. Nitromethane is oxygen poor, but when mixed with ammonium nitrate can be extremely lethal, such as in the bombing of the Alfred P. Murrah Federal Building in Oklahoma City.

Despite the extensive production and use of explosives for more than a century, their basic microscopic properties during detonation havent been unraveled, said Evan Reed, the lead author of a paper appearing in the Dec. 9 online edition of the journal, Nature Physics. Weve gotten the first glimpse of the properties by performing the first quantum molecular dynamics simulation.

In 2005 alone, 3.2 billion kilograms of explosives were sold in the United States for a wide range of applications, including mining, demolition and military applications.

Nitromethane is burned as a fuel in drag racing autos
'/>"/>

Contact: Anne Stark
stark8@llnl.gov
925-422-9799
DOE/Lawrence Livermore National Laboratory
Source:Eurekalert

Page: 1 2

Related biology technology :

1. A Large-Scale Research Project by a Dutch Consortium Addressing a Global Problem
2. CCMR gets $2.9M for training grad students in nanoscale science
3. Penn engineers design computer memory in nanoscale form that retrieves data 1,000 times faster
4. CCMR gets $2.9M for training grad students in nanoscale science
5. Penn engineers design computer memory in nanoscale form that retrieves data 1,000 times faster
6. Peter Cummings to receive the 2007 AIChE Nanoscale Science and Engineering Forum Award
7. Sol-gel inks produce complex shapes with nanoscale features
8. Elbit Medical Imaging Ltd. Announces Definitive Agreements for a Large Scale Luxury Mixed Use Project in Bangalore, India
9. Heavier hydrogen on the atomic scale reduces friction
10. China-Biotics, Inc. Receives Approval to Begin Construction on Large-Scale Manufacturing Facility
11. Anthrax vaccine produces immunity with nanoparticles, not needles
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/22/2015)... 2015  Varian Medical Systems (NYSE: VAR ), world ... its commitment to sustainability with inclusion on a prestigious list ... ranked healthcare equipment company among the Corporate Knights Global 100 ... Forum at Davos, Switzerland . ...
(Date:12/24/2014)... Md. , Dec. 24, 2014  United Therapeutics Corporation ... Inc. (NYSE: MDT ) has submitted a ... Administration (FDA) for the use of Medtronic,s SynchroMed ® ... developed catheter) for use with United Therapeutics, Remodulin ® ...
(Date:12/24/2014)... 2014 “Preparative & Process Chromatography ... Consumables (Columns, Solvents, Buffers, Valves, Guages, Seals), Accessories, ... - Forecasts to 2019” provides a detailed overview ... market trends, and strategies impacting the preparative and ...
(Date:12/24/2014)... On Friday, December 19, 2014, President Obama signed ... Appropriations Act of 2015, which for the first time, ... the Congressionally Directed Medical Research Programs (CDMRP) administered by ... working in conjunction with its allies on Capitol Hill, ...
Breaking Biology Technology:Varian Honored Among World's 100 Most Sustainable Corporations 2United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 2United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 3United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 4Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 2Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 3Preparative and Process Chromatography Market is expected to reach $9 billion by 2019 - New Report by Marketsandmarkets 4Rare Brain Condition Now Eligible for Department of Defense Research Dollars 2
... , , , , Katherine ... Borkovich PhD, University of Texas-Houston Medical Center, , , ... Kimberly Vollmer, Brinkmann™ Instruments Inc., BioSystems Application , ... , , , INTRODUCTION: ...
... , , Kurt Lucas, Eppendorf AG , , ... Significance of cell fusion , ... methods in modern biology, such as the production of monoclonal antibodies, , ... , chemically induced cell fusion via polyethylene glycol (PEG), electrical ...
... , , , , , , ... , , Introduction , , , ... Eppendorf , has created a unique standard of purity for ... bearing the Eppendorf , Biopur seal are produced with extensive automation of ...
Cached Biology Technology:Efficient Transfection of Neurospora Crassa 2Efficient Transfection of Neurospora Crassa 3Efficient Transfection of Neurospora Crassa 4Efficient Transfection of Neurospora Crassa 5Principles and applications of electrical cell fusion 2Principles and applications of electrical cell fusion 3Principles and applications of electrical cell fusion 4Principles and applications of electrical cell fusion 5A Unique Dimension in Biological Purity 2A Unique Dimension in Biological Purity 3A Unique Dimension in Biological Purity 4
(Date:1/22/2015)... , Jan. 13, 2015 /PRNewswire/ - Today, FindBiometrics, the leading source ... launch of its new website design. "When we ... infancy", says Peter O,Neill , founder and CEO of ... industry needs involvement from the key players on a very ...
(Date:1/22/2015)...  A man-made form of insulin delivered by nasal spray ... adults with mild cognitive impairment and Alzheimer,s disease dementia, ... Wake Forest Baptist Medical Center. The study,s ... impairment (MCI) or mild to moderate Alzheimer,s dementia (AD). ...
(Date:1/22/2015)... , Europe,s ... European Patent Office to present a video retrospective of the most ... featured: Christofer Toumazou and Sophie Wilson   ... of the Award   Starting on 22 January 2015 ...
Breaking Biology News(10 mins):Identity Industry Leading Publication Debuts New Look As Biometrics Hit Mainstream 2Nasal Spray with Insulin Equivalent Shows Promise as Treatment for Adults with Mild Cognitive Impairment, Alzheimer's Dementia 2Nasal Spray with Insulin Equivalent Shows Promise as Treatment for Adults with Mild Cognitive Impairment, Alzheimer's Dementia 3Ten Years of the European Inventor Award: A Retrospective Look at the Inventors and Ideas That Have Changed Our Lives 2Ten Years of the European Inventor Award: A Retrospective Look at the Inventors and Ideas That Have Changed Our Lives 3
... Houston Cullen College of Engineering has won a grant to ... disease safer and more effective. The grant goes to ... the National Science Foundation, it is valued at $330,000 for ... Abosch, an M.D./Ph.D a neurosurgeon with the University of Colorado ...
... more than a decade PETA and its affiliates ... organisations worldwide, providing the European Union (EU) and ... with technical expertise in modern, reliable, non-animal research ... PETA US, PETA UK and their European and ...
... that individuals with the highest metabolic rates within populations ... changes in their environments that could lead them to ... however should be constantly monitoring their opportunities for higher ... shows that variation in metabolic rates between individuals can ...
Cached Biology News:Parkinson's Surgery Research wins NSF Grant 2PETA and its international affiliates launch not-for-profit international science company 2Gathering information about food is not top priority for individuals with high metabolisms 2