News tagged with high frequency
Scientists discover new water waves
(PhysOrg.com) -- By precisely shaking a container of shallow water, researchers have observed wave behavior that has never been seen before. In a new study, Jean Rajchenbach, Alphonse Leroux, and Didier Clamond ...
Jul 19, 2011 |
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Physicists mix two lasers to create light at many frequencies
A team of physicists at UC Santa Barbara has seen the light, and it comes in many different colors. By aiming high- and low-frequency laser beams at a semiconductor, the researchers caused electrons to be ...
Mar 28, 2012 |
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New generation of flexible graphene transistors
Making electronic components using graphene, a material composed of a single layer of carbon atoms, is one of today's major technological challenges. Researchers hope to harness the outstanding electron mobility ...
Mar 15, 2012 |
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Planck instrument loses its cool
(PhysOrg.com) -- After an impressive two and a half years of operation, Planck's High Frequency Instrument has finally exhausted its onboard coolant gases and reached the end of its very successful mission. ...
Space & Earth / Space Exploration
Jan 17, 2012 |
4.7 / 5 (11) |
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Monitoring food with millimeter waves
Has the packet been properly filled? Are there impurities in the chocolate? Have the plastic seams been welded correctly? Is there a knife hidden in the parcel? Answers to all these questions are provided ...
Dec 02, 2011 |
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Ultra-flat loudspeakers with powerful sound reproduction
(PhysOrg.com) -- Bigger speakers, bigger sound - this is the music lover’s creed. Flat panel loudspeakers offer an alternative to those who would rather not or cannot clutter up their homes with speakers. ...
Sep 03, 2009 |
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Shifting sound to light may lead to better computer chips
By reversing a process that converts electrical signals into sounds heard out of a cell phone, researchers may have a new tool to enhance the way computer chips, LEDs and transistors are built.
Mar 16, 2009 |
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Breakthrough for post-4G communications
(PhysOrg.com) -- With much of the mobile world yet to migrate to 3G mobile communications, let alone 4G, European researchers are already working on a new technology able to deliver data wirelessly up to 12.5Gb/s.
Mar 05, 2009 |
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UN sets stage for blazing fast new mobile devices
(AP) -- A United Nations telecom meeting has approved the next generation of mobile technology, which experts say will make devices 500 times faster than 3G smartphones and eliminate the wait time between the tap of a finger ...
Jan 19, 2012 |
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Graphene mixer can speed up future electronics
Researchers at Chalmers University of Technology (Sweden) have for the first time demonstrated a novel subharmonic graphene FET mixer at microwave frequencies. The mixer provides new opportunities in future ...
Jan 03, 2012 |
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Research focuses on implementing radio frequency MEMS resonators on a silicon chip
Semiconductor Research Corporation and Cornell University researchers are working to advance on-chip silicon development to enable new generations of smaller and more sophisticated mobile electronic devices.
Dec 06, 2011 |
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Scientists hope to create robot strawberry pickers
Scientists at the National Physical Laboratory (NPL), the UK's Measurement Institute, have developed an imaging technology which can identify the ripeness of strawberries before they are picked. The developers ...
Oct 19, 2011 |
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DNA scan yields insights into Germany's E. coli bug
A strain of E. coli bacteria blamed for killing dozens of people in Germany is a genetic mix whose ability to stick to intestinal walls may have made it so lethal, a study in The Lancet said on Wednesday.
Medicine & Health / Diseases, Conditions, Syndromes
Jun 23, 2011 |
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Dolphins use double sonar
Dolphins and porpoises use echolocation for hunting and orientation. By sending out high-frequency sound, known as ultrasound, dolphins can use the echoes to determine what type of object the sound beam has ...
Jun 07, 2011 |
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Good vibrations: Devices aid the deaf by translating sound waves to vibrations
(PhysOrg.com) -- Lip reading is a critical means of communication for many deaf people, but it has a drawback: Certain consonants (for example, p and b) can be nearly impossible to distinguish by sight alone.
Feb 26, 2009 |
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