Physicists Demonstrate a Quantum Processor – Memory on a Chip

(Santa Barbara, Calif.) –– A new paradigm in quantum information processing has been demonstrated by physicists at UC Santa Barbara. Their results are published in this week’s issue of Science Express online.

UCSB physicists have demonstrated a quantum integrated circuit that implements the quantum von Neumann architecture. In this architecture, a long-lived quantum random access memory can be programmed using a quantum central processing unit, all constructed on a single chip, providing the key components for a quantum version of a classical computer.

The UCSB hardware is based on superconducting quantum circuits, and must be cooled to very low temperatures to display quantum behavior. The architecture represents a new paradigm in quantum information processing, and shows that quantum large-scale-integration is within reach.

Physicists Demonstrate a Quantum Processor – Memory on a Chip – [Link]

Artificial photosynthesis could power your house

David Biello writes:

One drinking-water bottle could provide enough energy for an entire household in the developing world if Dan Nocera has his way. A chemist from M.I.T. and founder of the company Sun Catalytix, Nocera has developed a cobalt-based catalyst that allows him to store energy the same way plants do: by splitting water.

“Almost all the solar energy is stored in water splitting,” Nocera told the inaugural ARPA-E conference on March 2. Solar Catalytix is among five companies awarded government funding to develop “direct solar fuels,” dubbed “electrofuels” by ARPA-E, the new Advanced Research Projects Agency for transformational energy technologies. “We emulated photosynthesis for large-scale storage of solar energy.”

Artificial photosynthesis could power your house – [Link]

New Transistors: An Alternative to Silicon and Better Than Graphene

www.sciencedaily.com writes:

Smaller and more energy-efficient electronic chips could be made using molybdenite. In an article appearing online January 30 in the journal Nature Nanotechnology, EPFL’s Laboratory of Nanoscale Electronics and Structures (LANES) publishes a study showing that this material has distinct advantages over traditional silicon or graphene for use in electronics applications.

A discovery made at EPFL could play an important role in electronics, allowing us to make transistors that are smaller and more energy efficient. Research carried out in the Laboratory of Nanoscale Electronics and Structures (LANES) has revealed that molybdenite, or MoS2, is a very effective semiconductor. This mineral, which is abundant in nature, is often used as an element in steel alloys or as an additive in lubricants. But it had not yet been extensively studied for use in electronics.

New Transistors: An Alternative to Silicon and Better Than Graphene – [Link]

Smooth Flasher circuit

freecircuits.org writes:

Ordinary LED flashers turn the LED on and off abruptly, which can get a little irritating after a while. The circuit shown here is more gentle on the eyes: the light intensity changes very slowly and sinusoidally, helping to generate a relaxed mood. The circuit shows a phase-shift oscillator with an adjustable current source at its output. The circuit is capable of driving two LEDs in series without affecting the current. The frequency is set by three RC networks, each of which consists of a 100 microF capacitor and a 22 kohm resistor. Operation is largely independent of supply voltage, and the average LED current is set at about 10 mA. The circuit adjusts the voltage across the emitter resistor so that it matches the base voltage of the first transistor (around 0.6 V). The phase shifting network gives rise to the oscillation around this average value. In the prototype of this circuit we used an ultra bright red LED.

Smooth Flasher circuit – [Link]

RELATED POSTS

Simple LED tester circuit

freecircuits.org writes:

This simple LED tester consists of a current source with a potentiometer that can be used to adjust the current. The current source is implemented using a type TL081 opamp. The output current of the opamp flows through the diode and R2. The voltage drop across R2 is fed back to the inverting input and compared with the reference voltage, which is set with R1 and applied to the non-inverting input. The adjust- ment range is approximately 0–30 mA, which is suitable for testing all normal LEDs. If you wish, you can connect a multi- meter across the LED to measure the voltage on the LED. For the power source, a good option is to use a small laboratory power supply with the output voltage set to 5 V. It is convenient to fit the potentiometer with a scale so you can see directly how much current is flowing through the LED. In order to calibrate the scale, you can temporarily connect an ammeter in place of the LED.

Simple LED tester circuit – [Link]

Superfast Rechargable Battery

Here is an interesting project which uses capacitors to store energy instead of chemical,sit uses an different type of capacitors called Goldcap capacitors,GoldCap capacitors offer an interesting alternative power source when compared to conventional disposable or even rechargeable batteries. They can be charged very rapidly and can also deliver a high peak output current. Their voltage rating however is quite low so a little electronic assistance is necessary to raise the output voltage to a more useful level.PP3 (6F22) type 9 V batteries are often used in small portable equipment that require very little current and may only be used intermittently. Under these conditions its often the case that the battery is flat just when you urgently need to use the equipment. NiCd rechargeable cells are not a good choice in these applications because their self-discharge characteristics are much worse than dry cells and often there is no charge left after a long time in storage.

Superfast Rechargable Battery – [Link]

Subscribe to the SOS newsletter and win twice!

In February you can win a digital multimeter in value of € 200

In autumn 2011 the SOS electronic launched to its customers and fans a unique new newsletter, which is tailor-made. You can choose what you want to read and how often you’ll get!

The newsletter contains product articles on a high professional level and the main task is primarily to inform developers about new trends and components in the industry. For these articles especially for this purpose is assigned a specialist who has worked as a developer itself, so he can feel the need to develop hardware applications.

Newsletter uniqueness lies in the fact that you can set up yourself in your profile an area of messaging and the frequency of such transfers.

Actually the newsletter is sent to more than 40 000 email addresses. If you are not among them, you can subscribe for it. In 2012, you have two more reasons to do it so.

If you do it, you can win one of the monthly prices. Of all those who subscribe for newsletter in the particular month will be choose by a lot a winner of valuable price.

In addition, those who subscribe in during the year 2012 and stay subscribed for the newsletter for the whole time will be listed for a drawing of a professional soldering station Weller WX 2!

So remember:

1. You can subscribe for SOS newsletter at http://www.soselectronic.com/newsletter

2. In February 2012 we will be drawing the winner of intelligent digital multimeter UNI-T UT71E in value of 200 €.

3. Throughout the year 2012 you can compete for professional soldering station Weller WX 2021 in value of 1100 €.

Logic circuits and computer memory are printed together on a sheet of plastic

Thinfilm Electronics and PARC developed a technology for printing semiconductors onto a plastic film – [via]

Last month, a small Norwegian company called Thinfilm Electronics and PARC, the storied Silicon Valley research lab, jointly showed off a technological first—a plastic film that combined both printed transistors and printed digital memory.

Such flexible electronics could be an important component of future products, such as food packaging that senses and record temperatures, shock-sensing helmets, as well as smart toys. But the story of how PARC’s technology—the printed transistors—wound up paired with memory technology from an obscure Norwegian company also provides a window onto a 10-year struggle by Xerox to transform the way it commercializes R&D ideas.

Logic circuits and computer memory are printed together on a sheet of plastic – [Link]

DIY iPhone remote automotive ignition

dangerousprototypes.com writes:

Will O’Brien developed this project allowing him to remotely start his car via an SMS sent to a jailbroken iPhone. The additional hardware involved is an Arduino, iPhone breakout board such as the PodBreakout Mini, 4x 10k resistors, 1x TIP120 and a 5 volt switching supply cell charger.

All the details, including source code and schematic are available on Will’s Biobug website

DIY iPhone remote automotive ignition – [Link]