Hands free sets for mobile phones may be on the verge of a big comeback thanks to new research by the University of Warwick. Many people used hands free sets in an attempt to avoid what they perceived as a microwave radiation risk from holding a mobile phone close to one`s head.
However when it was pointed out that the standard wire based hands free kit actually itself acted as an aerial amplifying any signal to the users head the kit fell out of favour with this type of user.
Now researchers led by Professor Roger Green at the University of Warwick have found and patented a way of producing optical signal based hands free devices for mobile phones that do indeed shield users who fear the microwave radiation from mobile phones.
The researchers have developed a simple means of converting electrical signals from the mobile phone into an optical signal that is guided up through a plastic tube to an ear-piece where the signal is converted back into an audible form. This plastic tube cannot act as a radio antenna so no radio energy is channelled to the users head.
The technology also uses a crystal based ear-piece speaker instead of an electromagnetic coil to further minimise the action of stray electric fields.
Roger Green, Professor of Electronic Communication Systems,
School of Engineering, University of Warwick,
Coventry CV4 7AL.Tel : +44 (0)24 76 523133
Mobile +44 (0)7855 901515
Peter Dunn | AlphaGalileo
Information integration and artificial intelligence for better diagnosis and therapy decisions
24.05.2017 | Fraunhofer MEVIS - Institut für Bildgestützte Medizin
World's thinnest hologram paves path to new 3-D world
18.05.2017 | RMIT University
Staphylococcus aureus is a feared pathogen (MRSA, multi-resistant S. aureus) due to frequent resistances against many antibiotics, especially in hospital infections. Researchers at the Paul-Ehrlich-Institut have identified immunological processes that prevent a successful immune response directed against the pathogenic agent. The delivery of bacterial proteins with RNA adjuvant or messenger RNA (mRNA) into immune cells allows the re-direction of the immune response towards an active defense against S. aureus. This could be of significant importance for the development of an effective vaccine. PLOS Pathogens has published these research results online on 25 May 2017.
Staphylococcus aureus (S. aureus) is a bacterium that colonizes by far more than half of the skin and the mucosa of adults, usually without causing infections....
Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.
The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....
An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.
We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...
Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.
Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...
An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...
24.05.2017 | Event News
23.05.2017 | Event News
22.05.2017 | Event News
26.05.2017 | Life Sciences
26.05.2017 | Life Sciences
26.05.2017 | Physics and Astronomy