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:5/3/2016)... , ... May 03, 2016 , ... ... the addition of Dr. Nancy Gillett to its Board of Directors. Dr. Gillett ... served as Corporate Executive Vice President and Chief Scientific Officer. A board-certified veterinary ...
(Date:5/3/2016)... New York, NY (PRWEB) , ... May 03, 2016 , ... ... Lenox Hill Hospital , for definitive prostate cancer treatment, patients traditionally had two main ... an appropriate treatment plan would be made. , New technology has enabled doctors ...
(Date:5/2/2016)... ... 02, 2016 , ... F.E.E.D. Co., the Feline Environmental Enrichment ... veterinarian-designed product for indoor cats. The NoBowl Feeding System replaces the bowl with ... way nature intended. NoBowls make cats happy and healthy. , Since being introduced ...
(Date:4/29/2016)... ... April 29, 2016 , ... ... fundamentals to transform technology into a viable company, CereScan’s CEO, John Kelley, joined ... Kelley, a recognized leader and mentor in the Denver area business community, shared ...
Breaking Biology Technology:
(Date:3/18/2016)... , March 18, 2016 --> ... of Biometrics, ICT, Manned & Unmanned Vehicles, Physical infrastructure and ... security companies in the border security market and the continuing ... and Europe has led visiongain to ... improved success. --> defence & security companies ...
(Date:3/14/2016)... MELBOURNE, Florida , March 14, 2016 ... on the growing mobile commerce market, announces the airing of ... York channels starting the week of March 21 st . ... and CNBC, including its popular Squawk on the Street show. ... company focused on the growing mobile commerce market, announces the ...
(Date:3/10/2016)... India , March 10, 2016 ... a new market research report "Identity and Access Management ... & Audit, Compliance, and Governance), by Organization Size, by ... to 2020", published by MarketsandMarkets, The market is estimated ... USD 12.78 Billion by 2020, at a Compound Annual ...
Breaking Biology News(10 mins):