tag: Caltech

System Bits: Nov. 11
By Ann Mutschler - 11 Nov, 2014 - Comments: 0

How transistors operate at absolute zero Research led by scientists at Chalmers University of Technology in Sweden and Caltech in California have demonstrated how noise in a microwave amplifier is limited by self-heating at very low temperatures, which is expected to be of importance for future discoveries in such as quantum computers and radio astronomy. The team also included researchers ... » read more

Power/Performance Bits: July 22
By Ann Mutschler - 22 Jul, 2014 - Comments: 0

Lasers to replace quartz in electronics? While nearly all electronics today require devices called oscillators that create precise frequencies, future high-end navigation systems, radar systems, and even possibly tomorrow's consumer electronics will require references beyond the performance of quartz, according to researchers at Caltech. In fact, these researchers have developed a method to... » read more

Manufacturing Bits: July 1
By Mark LaPedus - 01 Jul, 2014 - Comments: 0

Nanotubes in 4D The California Institute of Technology (Caltech) has continued to advance its efforts in four-dimensional electron microscopy. In 4D microscopy, electrons bombard a sample. Each electron scatters off the sample. This produces an image at just a femtosecond in duration. Then, millions of the images are stitched together, which, in turn, produces a digital movie in 4D. [cap... » read more

Power/Performance Bits: June 3
By Ann Mutschler - 03 Jun, 2014 - Comments: 0

Stabilizing common semiconductors for solar fuels generation Researchers around the world are trying to develop solar-driven generators that can split water, yielding hydrogen gas that could be used as clean fuel. These devices would require efficient light-absorbing materials that attract and hold sunlight to drive the chemical reactions involved in water splitting. As semiconductors like sil... » read more

System Bits: May 20
By Ann Mutschler - 20 May, 2014 - Comments: 0

Re-routing noise away from measurement Today, we are capable of measuring the position of an object with unprecedented accuracy, but quantum physics and the Heisenberg uncertainty principle place fundamental limits on our ability to measure. Noise that arises as a result of the quantum nature of the fields used to make those measurements imposes what is called the "standard quantum limit," whi... » read more

System Bits: April 8
By Ann Mutschler - 08 Apr, 2014 - Comments: 0

Quantum photon properties revealed in plasmon particle For years, researchers have been interested in developing quantum computers—the theoretical next generation of technology that will outperform conventional computers that involves storing information in qubits rather than in bits used by computers today. One approach for computing with qubits relies on the creation of two single photons ... » read more

System Bits: March 18
By Ann Mutschler - 18 Mar, 2014 - Comments: 0

Bending light with a tiny chip Imagine your smartphone being able to project a bright, clear image from a presentation or a video onto a wall or a big screen – all made possible with a light-bending silicon chip developed by Caltech researchers. Traditional projectors pass a beam of light through a tiny image, using lenses to map each point of the small picture to corresponding, yet expan... » read more

System Bits: Feb. 25
By Ann Mutschler - 25 Feb, 2014 - Comments: 0

A faster Internet While light is capable of carrying vast amounts of information, to utilize its potential, the laser light needs to be as spectrally pure—as close to a single frequency as possible. The purer the tone, the more information it can carry. For decades researchers have been trying to develop a laser that comes as close as possible to emitting just one frequency. Today's world... » read more

System Bits: Dec. 31
By Ann Mutschler - 31 Dec, 2013 - Comments: 0

Low signal loss waveguides With the potential to enable a leap ahead in size reduction and performance, DARPA-funded researchers at UCSB and CalTech have developed new methods to integrate long coils of waveguides with low signal loss onto microchips—potentially enabling a leap ahead in size reduction and performance. Long coils of optical waveguides—any structure that can guide light, ... » read more

System Bits: Nov. 12
By Brian Bailey - 12 Nov, 2013 - Comments: 0

3D Printers When thinking about 3D printers, most people probably think about creating small plastic parts or prototypes. 3D printing now can be used to print lithium-ion microbatteries the size of a grain of sand. The printed microbatteries could supply electricity to tiny devices in fields from medicine to communications, including many that have lingered on lab benches for lack of a batt... » read more

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