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:10/11/2017)... -- VMS BioMarketing, a leading provider of patient support solutions, has ... (CNE) network, which will launch this week. The VMS CNEs ... professionals to enhance the patient care experience by delivering peer-to-peer ... care professionals to help women who have been diagnosed and ... ...
(Date:10/11/2017)... ... October 11, 2017 , ... ... has granted orphan drug designation to SBT-100, its novel anti-STAT3 (Signal Transducer and ... of osteosarcoma. SBT-100 is able to cross the cell membrane and bind intracellular ...
(Date:10/10/2017)... ... 10, 2017 , ... Dr. Bob Harman, founder and CEO of VetStem ... The event entitled “Stem Cells and Their Regenerative Powers,” was held ... Harman, DVM, MPVM was joined by two human doctors: Peter B. Hanson, M.D., Chief ...
(Date:10/10/2017)... PA (PRWEB) , ... October 10, 2017 , ... ... year’s recipients of 13 prestigious awards honoring scientists who have ... presented in a scheduled symposium during Pittcon 2018, the world’s leading conference and ...
Breaking Biology Technology:
(Date:6/23/2017)... and ITHACA, N.Y. , June ... Cornell University, a leader in dairy research, today announced ... designed to help reduce the chances that the global ... onset of this dairy project, Cornell University has become ... Sequencing the Food Supply Chain, a food safety initiative ...
(Date:5/16/2017)... DALLAS , May 16, 2017   ... for health organizations, and MD EMR Systems ... certified development partner for GE, have established a ... Patient Portal product and the GE Centricity™ products, ... Centricity EMR. These new integrations ...
(Date:4/18/2017)... 2017  Socionext Inc., a global expert in SoC-based imaging and ... the M820, which features the company,s hybrid codec technology. A demonstration ... Probe, Inc., will be showcased during the upcoming Medtec Japan at ... the Las Vegas Convention Center April 24-27. ... Click here for an ...
Breaking Biology News(10 mins):