They are found wherever other measurement methods fail: magnetic sensors. They defy harsh environmental conditions and also function in fluids. A new procedure is now revolutionizing the production of two-dimensional magnetic sensors: They now only cost half, and production time is reduced by 50 percent.
Where did you have to go? Turn right here – or was it the next turn? A glance at the smart-phone helps: Various apps provide maps and turn them in the right direction, adjusting them to north. Navigation devices are equally »clever«: They too show the right direction even before the car sets off. This is made possible by a magnetic sensor. It establishes how the device is being held in relation to the earth’s magnetic field. The market is highly competitive: Every cent counts in the price of the sensors. Until now, manufacturers have relied on several cheap one-dimensional sensors. The disadvantage: They are less sensitive and do not work as accurately as two-dimensional models.
In future however, compact two-dimensional sensors could find their way into smart-phones. Researchers from the Fraunhofer Institute for Electronic Nano Systems ENAS, in Chemnitz have optimized the corresponding manufacturing process. »The costs and manufacturing time for two-dimensional magnetic field sensors drop by half«, says Dr. Olaf Ueberschär, group manager at the ENAS.
Sensors »from one piece«
The reason for this drop in costs lies in the method of production: The scientists produce the sensors from one piece of material – hence in a totally different way than ever before. Because even a one-dimensional sensor needs two microelectronic half-bridges, whose applied magnetic fields point in opposite directions. As the basic materials specify a magnetization direction, meaning that the magnetic field within them is already aligned, two different pieces of material used to have to be joined – an elaborate and also expensive procedure. Two half-bridge sensors or four pieces of material were required for two-dimensional sensors.
»For the first time we are able to produce not only the full bridges, but also the two-dimensional sensors monolithically – from one piece«, Ueberschär adds. For this purpose, the researchers separate a layer of material off a wafer and etch the desired structure out. The trick lies in the subsequent laser treatment: This enables the scientists to adjust the preferred magnetic directions at will.
As small as the dot on the “i”
Another advantage: The new sensor is not even quite a square millimeter in size, thus being only about half the size as former models. The smaller the mini-chips are, the more applications they are suitable for. For example for magnetic field cameras, containing numerous sensors in several lines and columns, recording magnetic data. If a high resolution is to be achieved, the sensors must be as small as possible – only then do they fit in close proximity to one another and do not mutually interfere.
Read more: Cost-effective production of magnetic sensors
The Latest on: Magnetic sensors
[google_news title=”” keyword=”Magnetic sensors” num_posts=”10″ blurb_length=”0″ show_thumb=”left”]
via Google News
The Latest on: Magnetic sensors
- Optically Trapped Nanodiamonds to Measure Properties Inside Living Cellson March 31, 2023 at 6:48 am
(UTC–07:00). Interest in fluorescent nanodiamonds (FNDs) has grown as potential emitters and sensors for a variety of uses. The ability of FNDs to sense physical factors using quantum sensings, such ...
- Researchers use tiny diamonds to create intracellular sensorson March 30, 2023 at 6:42 am
Researchers have developed a new way to study the intricate dynamics within living cells by using optically trapped nanodiamond particles as intracellular sensors. Using custom built optical tweezers, ...
- A Magnetic Field Strength Meter Using An Arduinoon March 29, 2023 at 5:00 pm
It’s something [mircemk] demonstrates, with an Arduino-powered magnetic field strength meter that uses a UGN 3503U Hall effect device. The circuit is extremely simple, comprising the sensor ...
- Magnetic Sensors Market | Growth Prospects by 2023-2028on March 28, 2023 at 9:58 pm
The global "Magnetic Sensors Market" research study presents an in-depth analysis of the market's revenue, size, ...
- Magnetic Sensors Market 2023: Growing Opportunities by 2028on March 28, 2023 at 9:58 pm
The global "Magnetic Sensors Market" research study presents an in-depth analysis of the market's revenue, size, ...
- Magnetic Sensors Market Is Expected To Grow At A CAGR Of 7.2% Over The Forecast Period: Says Coherent Market Insightson March 27, 2023 at 10:08 am
SAN FRANCISCO, CALIFORNIA, UNITED STATES, March 27, 2023 /einpresswire.com / -- Report Description: Coherent Market Insight has released a new research study titled "Magnetic Sensors Market" 2023 ...
- An Alternator Powered Electric Bicycle Gives Rotor Magnetic Field Insighton March 26, 2023 at 5:00 pm
Most alternator conversions work without sensors, though for better control it’s worth adding these magnetic sensors to allow the controller to more directly sense the rotation. He initially ...
- Automotive Sensors Market to Hit US$ 46.4 Billion by 2028, with a CAGR of 12.10% – Exclusive Report by IMARC Groupon March 21, 2023 at 2:35 pm
The report has segmented the automotive sensors market on the basis of type, vehicle type, application, sales channel and region.According to IMARC Group’s latest report, titled “Automotive Sensors ...
- Magnetic Sensor Market Poised to Reach US$7.5 Bn By 2030, Expand at 7.2% CAGRon March 10, 2023 at 5:20 pm
New York, March 07, 2023 (GLOBE NEWSWIRE) -- The detailed research report on the magnetic sensor market is offered by Reports Insights Pvt. Ltd. The research takes into consideration several ...
- Graphene quantum dots show promise as novel magnetic field sensorson March 6, 2023 at 7:13 pm
Trapped electrons traveling in circular loops at extreme speeds inside graphene quantum dots are highly sensitive to external magnetic fields and could be used as novel magnetic field sensors with ...
via Bing News