Navigation Links
Densest dice packing and computing with molecules
Date:5/3/2010

Dice Packing Record

Tetrahedral dice, which have four triangular sides, pack more densely than any other shape yet tested, according to research performed by a collaboration of New York University and Virginia Tech physicists. The revelation is the result of a series of experiments that involved pouring tetrahedral dice into containers, shaking them, and adding more dice until the containers were completely filled. After adding water to measure the open space between the dice, the researchers confirmed that the tetrahedrons fill roughly 76% of the available space in a large container. Similar experiments with spheres typically only fill containers to about 64% of the total volume. The researchers were able to get an inside view of the packed tetrahedral dice by imaging the containers with an MRI machine. The images are vital in helping them check and refine their die packing models.

The experiment, which is reported in the May 3 issue of Physical Review Letters, confirms recent calculations predicting efficient packing. Such packing problems are related to understanding many other problems including liquids seeping through soils, the flow of granular materials like sand and gravel, dense storage of information in digital memory, and even determining the best shapes for packaging consumer products like medicine tablets and candies. Daan Frankel of the University of Cambridge discusses the tetrahedral packing experiment and related research in a Viewpoint article appearing in the current edition of APS Physics.

Molecular Computations

An experimental demonstration of a quantum calculation has shown that a single molecule can perform operations thousands of times faster than any conventional computer. In a paper published in the May 3 issue of Physical Review Letters, researchers in Japan describe a proof-of-principle calculation they performed with an iodine molecule. The calculation involved that computation of a discrete Fourier transform, a common algorithm that's particularly handy for analyzing certain types of signals.

Although the calculation was extraordinary swift, the methods for handling and manipulating the iodine molecule are complex and challenging. In addition, it's not entirely clear how such computational components would have to be connected to make something resembling a conventional PC. Nevertheless, in a Viewpoint in the current edition of APS Physics, Ian Walmsley (University of Oxford) points out that the demonstration of such an astonishingly high-speed calculation shows that there is a great deal to be gained if physicists can overcome the difficulties in putting single-molecule computation to practical use.


'/>"/>

Contact: James Riordon
riordon@aps.org
301-209-3238
American Physical Society
Source:Eurekalert  

Related biology technology :

1. Yale scientists make 2 giant steps in advancement of quantum computing
2. The future of computing -- carbon nanotubes and superconductors to replace the silicon chip
3. Quantum computing breakthrough arises from unknown molecule
4. REvolution Computing Offers Hands-On Tutorial of NWS Parallel Computing Environment at BioC 2008
5. University of Pennsylvania scientists move optical computing closer to reality
6. First tunable, noiseless amplifier may boost quantum computing, communications
7. Memoirs of a qubit: Hybrid memory solves key problem for quantum computing
8. FSU scientific computing department hosts international conference
9. Max Planck Institute of Biochemistry Uses MathWorks Tools in Its Quest to Cure Cancer : Institute Accelerates Reconstruction of Key Protein Complexes Using MATLAB and Parallel Computing Toolbox
10. Penguin Computing Announces Niveus HTX Personal Supercomputer
11. Stanford: Quantum computing spins closer
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Densest dice packing and computing with molecules
(Date:3/29/2017)... 29, 2017  Vermillion, Inc. (NASDAQ: VRML), a ... on its results for the fourth quarter and ... "2016 marked a pivotal year for us with ... international distribution agreements, major reimbursement progress with Medicare, ... agreements. In addition we cleared our 2 nd ...
(Date:3/29/2017)... COLORADO SPRINGS, CO , March 29, 2017 /PRNewswire/ - Last year,s ... who support kratom are not the only efforts active to generate ... that substitute opiate based pharmaceutical drugs in the healthcare market place. ... Earlier this ... U.S. based developer and distributor of pharmaceutical and nutritional products, announced ...
(Date:3/29/2017)... Tx (PRWEB) , ... March 29, 2017 , ... ... honored to announce that Nerium International Mexico has been approved as an active ... works to achieve satisfaction and protection among distributers and consumers in relationship marketing. ...
(Date:3/29/2017)... , March 29, 2017  Halozyme Therapeutics, Inc. ... and drug-delivery therapies, today announced that an Oncologic ... Drug Administration voted 11 to 0 that the ... injection was favorable for patients in the proposed ... and chronic lymphocytic leukemia. The FDA action date ...
Breaking Biology Technology:
(Date:3/2/2017)... March 2, 2017 Who risk to be ... Download the full report: https://www.reportbuyer.com/product/4313699/ WILL ... SENSOR FIELD? Fingerprint sensors using capacitive technology represent ... sensor vendor Idex forecasts an increase of 360% of ... and of the fingerprint sensor market between 2014 and ...
(Date:2/28/2017)... , Feb. 28, 2017   Acuant , a ... globally, announces significant enhancements to new and core technologies ... New products include mobile and desktop Acuant FRM TM ... - a real time manual review of identity ... technology provides the fastest and most accurate capture software ...
(Date:2/27/2017)...   Strategic Cyber Ventures , the industry,s first ... $3.5 million investment in  Polarity , the first commercial ... DC based and is led by cybersecurity veterans ... Ron Gula , also a longtime cybersecurity veteran and ... series A round of funding. This new funding will ...
Breaking Biology News(10 mins):