Thermal Management
A Graphene-Metal Sandwich Could Improve Electronics
Posted in Electronic Components, Thermal Management, Electronics, Materials, Coatings & Adhesives, Metals, Medical, News, MDB on Thursday, 20 March 2014
Researchers have discovered that creating a graphene-copper-graphene “sandwich” enhances copper’s heat conducting properties, which could help in shrinking electronics. Engineers at the University of California, Riverside, and the University of Manchester, UK, in collaboration, found that adding a layer of graphene, a one-atom thick material on each side of a copper film increased heat conducting properties by up to 24 percent.
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MELF Resistor Series
Posted in Electronic Components, Board-Level Electronics, Thermal Management, Electronics, Manufacturing & Prototyping, Medical, Products, MDB on Wednesday, 01 January 2014
Stackpole Electronics Inc., Raleigh, NC, announces that its surface mount metal film MELFs, the MLF and MLFM Series offers cooler operating temperatures at full rated power. The cylindrical shape provides a termination that is far more thermally efficient than comparable size flat chip resistors. They are ideally suited for medical instrumentation, monitoring, and test equipment.
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Transistor for High-Performance Devices at Low Voltage
Posted in Electronic Components, Power Supplies, Thermal Management, Electronics, Power Management, Implants & Prosthetics, Medical, Patient Monitoring, News, MDB on Tuesday, 17 December 2013
A team of scientists at Penn State, University Park, PA, say that a new type of transistor could make fast, low-power computing devices possible for energy-constrained applications such as implantable medical electronics, smart sensor networks, and ultra-mobile computing. Called a near broken-gap tunnel field effect transistor (TFET), the new device uses the quantum mechanical tunneling of electrons through an ultrathin energy barrier to provide high current at low voltage.
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How to Optimize Carbon Nanotube Arrays
Posted in Thermal Management, Nanotechnology, News, MDB on Tuesday, 10 December 2013
When designing devices, engineers often must join together materials that expand and contract at different rates as temperatures change. Such thermal differences can cause problems if, for instance, a semiconductor chip is plugged into a socket that can’t expand and contract rapidly enough to maintain an unbroken contact over time.
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Thermally Optimized Medical Devices Improve Patient Outcomes
Posted in Features, Manufacturing & Prototyping, Electronics, Electronic Components, Thermal Management, Medical, MDB on Tuesday, 12 November 2013
Today’s medical device and equipment designs are highly influenced by continuous technological advances that affect their size, power consumption, and communication capabilities. But patient safety and comfort are also critical considerations, forcing designers to balance the demands of new technology with the demands of new forms of patient care. From addressing industry-wide concerns over bioburden to adhering to strict noise limitations and biocompatibility needs, the list of requirements is becoming increasingly long. In order to provide the best possible solutions, medical device designers need a working knowledge of the thermal management technologies available to them. Armed with a thorough understanding of both passive and active thermal management systems, including their components, benefits, and applications, designers can more effectively address all the needs of the medical industry.
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Circuit Protection Critical to Safeguarding Both Medical Devices and Patients’ Health
Posted in Manufacturing & Prototyping, Custom & Contract Manufacturing, Electronics, Electronic Components, Board-Level Electronics, Thermal Management, Power Management, Medical, Features, MDB on Sunday, 01 September 2013
Agrowing array of electronic devices are available to healthcare providers, patients, and their families, including glucose meters, blood pressure monitors, automated external defibrillators (AEDs), and many others. To ensure safe, reliable performance of these devices, their designers must factor in circuit protection requirements from the earliest stages of the circuit design process. For example, a seemingly minor electrostatic discharge could easily render a portable medical device useless if it’s not properly protected, exposing the patient to the danger of misleading (or no) readings and the device’s manufacturer to legal liability if inaccurate results lead to improper treatment.
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Tips for Selecting Insulating Materials for Medical Electronics
Posted in Manufacturing & Prototyping, Custom & Contract Manufacturing, Electronics, Electronic Components, Thermal Management, Medical, Features, MDB on Thursday, 01 August 2013
Insulating and jacketing material options for wire and cable are innumerable, even if the field is narrowed to those with some qualification for use in medical electronics. Material selection for medical electronics is a complicated decision that begins with defining “qualification” and “medical”. Device manufacturers rely on a combination of inhouse experiences, cable suppliers, testing laboratories, consulting services, standards, guidance documents, and other publications. Their requirements for new devices may be defined strictly by the FDA, or may further incorporate application, market, or manufacturer preferences. For example, there are a great number of materials that will meet FDA requirements for surface contact patient monitoring cable materials, but a flexible and highly durable, silky-textured, cost competitive material may be preferred by the user. A specification may also call for a higher level of biocompatibility than is strictly required by the FDA. This may be the result of existing qualifications obtained with those materials, or it may be an over-specification that should be explored.
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