Newsreader Lewis Vaughan Jones makes debut wearing hearing aid.
A newsreader who suddenly lost the hearing in his left ear, has received messages of support after his first appearance on air with a hearing aid.
Lewis Vaughan Jones, 37, feared his career presenting the news on the BBC and ITN was over after doctors told him the hearing loss was permanent.
“That was the darkest moment,” he told BBC Radio 5 live.
He also spoke of his embarrassment in social situations and the difficulties of coming to terms with a hearing aid.
Vaughan Jones had good hearing all his life until he got a cold several months ago and couldn’t hear in one ear.
Doctors found his left eardrum was no longer working and the nerve which takes sound to the brain had given up, he told BBC Breakfast.
When they told him the sudden hearing loss and the tinnitus were permanent, he walked out of hospital “completely bamboozled”, he added.
The charity Action on Hearing Loss says about 11m people in the UK have some form of hearing loss, and 2m use hearing aids. It estimates that there are about 6.7m people who could benefit from hearing aids.
Before being fitted with a hearing aid, Vaughan Jones said his situation had left him frustrated and embarrassed.
“There’s only so many times you can interrupt. You feel embarrassed so you withdraw,” he said.
He also described how he would smile and nod along when spending time with friends and family, feeling unable to engage and as though he was missing out.
His hearing aid, he said, has been a massive help, allowing him to return to work.
His return to screen, however, was a noisy one as he can hear the director and correspondents through an earpiece in his right ear and an amplified, distorted version of his own voice through the hearing aid in his left.
The brain should learn to quieten down that distortion, he said.
Getting used to wearing a hearing aid has not come easy.
“I was self-conscious about it. My hair is slightly longer so that’s a reflection that I might have been trying to hide it,” he adds.
Now back on air, he wants to show everyone he is wearing one.
“There’s no logical reason why I shouldn’t wear my hearing aid on air and feel good about it,” he said.
Some took to Twitter to agree.
Robbie M said he started wearing two hearing aids five years ago after finding he was unable to hear in meetings. He advised Vaughan Jones to “wear them with pride,” adding: “Quality of life over people’s thoughts every time.”
Nikki Magrath said: “Great to hear you talk about SSHL [Sudden Sensorineural Hearing Loss] today. I know just how it feels. Has happened twice – once with full recovery.”
Tinnitus Relief app makes living with tinnitus easier
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An international study from 2012 found that 15% of the global population experience permanent tinnitus but many more are affected by temporary tinnitus. A Danish study, also from 2012, with 14,000 participants found that 27% of those in the study experienced either temporary or permanent tinnitus. In other words, more than one quarter of the Danish population are affected tinnitus.
But despite a lot of research on the topic, there is still a lot to learn about tinnitus. According to Chief Physician Ture Andersen at Odense University Hospital in Denmark, tinnitus is often a symptom of damage to the inner ear. Tinnitus is not a disease, but can be a symptom of a disease or an impaired auditory system. It is defined as the perception of noise or ringing in the ears when no external sound is actually present. The sounds are most commonly described as ringing, whistling, wheezing, buzzing or humming, but can be described in many other ways. A large Swedish study showed that excessive noise at work and in other environments results in fatigue, headaches and ultimately impaired hearing or tinnitus. Another study, from France, shows that only one in 123 people with tinnitus do not have a hearing impairment.
Eva Jensen, who lives in Greve, Denmark, fits in well to these statistics. With a moderate to severe hearing loss, Eva can’t hear much without her hearing aids and she experiences tinnitus.
“What does your tinnitus sound like?” I asked Eva. She explained that it is a constant buzzing sound, which lies somewhere in the middle of the pitch spectrum. “I think it developed at my work where there was a lot of noise,” says Eva. In 2006 she stopped working as an Educational Assistant in a nursery because of a back injury and since then she has suffered from constant back pain.
“It was only when I stopped working that I started thinking about my tinnitus. My husband was still working so I was at home alone where it was completely quiet and I became more aware of the ringing in my ears.” She experiences it all day, especially when she takes off her hearing aids in the evening. “Since my injury I have the TV on constantly – it helps me think of something other than my back pain,” says Eva.
Eva’s experience with Relief app
“It’s really great to be able to use the app when my tinnitus is driving me crazy. If you are strongly affected by tinnitus, I would definitely recommend this app. There are so many possibilities with creating your own soundscapes, you can always find a sound that’s comfortable. There is no doubt that I’m going to keep it on my phone, so I can get help when my tinnitus it really bothering me,” says Eva with a smile.
The idea of helping people focus on something other than the pain, or in this case tinnitus, is the basic concept of a new app made by the hearing aid manufacturer GN Hearing. The free app is called ReSound Relief and offers a combination of audio therapy and relaxation exercises. My editorial team and I tested the app, which offers some new and unique features compared to other apps we have tried. One very smart feature of the app is that it allows you to create your own soundscapes.
Relief allows you to combine a variety of familiar sounds such as birdsong or bubbling water with music and other therapeutic nature sounds. The ability to combine sounds, offers an almost endless amount of possibilities. This sound mixing feature allows you to mix five different sounds and you can individually adjust the volume of each sound.
After downloading the app, you can listen to music on your smartphone as usual, and if you use wireless hearing aids or headphones, you can stream directly through them. The ReSound Relief app also contains a feature called MyRelief that keeps a record of how you use the app and which sounds you have used the most. It creates a personalized plan and allows you to track your progress, much like an exercise app. “When we were developing the concept of this app, we analyzed the market for other tinnitus apps and found that mostof them just use sounds as a distraction. Very few actually guide the user through the tinnitus management process. Tinnitus management for many is more than just playing a sound.
The idea of MyRelief is that you can use it as part of the treatment provided by a Hearing Care Professional. Because MyRelief keeps a record of your use, it provides useful information that a Hearing Care professional can use as part of tinnitus counseling” says Michael Piskosz, Senior Audiologist at GN Hearing.
The app gives you some great tools to help you with your tinnitus.
Avoid a vicious spiral
Worldwide, around 700 million people experience tinnitus. Around two thirds of them have mild to moderate tinnitus. People in the last third with more severe tinnitus can even experience feelings of desperation and hopelessness. International studies show that only about 3-5% of people seek help, so many people just try to live with tinnitus without any support. “In the United States, 70-80% of the population have a smartphone, and because we know that many people are desperately searching for help, we made this app. In most cases, the app will be beneficial. In addition to the distracting sounds there is also therapeutic support,” says Michael Piskosz. “ReSound Relief includes relaxation exercises and techniques for dealing with the tension and stress that tinnitus can cause. If you are extremely affected by tinnitus, the app alone will not be enough but it is a very useful tool and a great first step for people seeking help with tinnitus.”
This strategy is supported by a study by Professor Ture Andersen from Odense University Hospital. “Unfortunately, the more emotionally you react to your tinnitus, the more the tinnitus signals will pass through the hearing center in your brain. If you respond by getting irritated or with stress or anxiety, it can actually make you more aware of the tinnitus sounds. You may end up getting into a “vicious cycle” where your tinnitus ends up controlling you. It’s important to learn how to avoid this. One way is by training yourself not to respond to the tinnitus sounds. This way, the brain will filter out the noise signals to a large extent before reaching the hearing center. Then you’ll only hear a weak sound in the background, a light soundscape that makes it less distracting.” The study also shows that music can help. The volume of the music should not be particularly high – it’s not about covering up the sound of tinnitus with a louder sound – but about focusing your attention on the music and away the tinnitus.
“In some cases, when you use audio therapy to get relief from your tinnitus, the focus on it can increase,” explains Michael Piskosz. “Many people believe that this is due to the introduction of the technology to help with the tinnitus. Often times, people monitor their tinnitus more, to see if the technology is helping. It’s similar to when someone gets a new pair of shoes. At first, they are very aware of the shoes, and getting used to the fit. But, with time, they adjust and acclimate. Typically, users will find that the focus on tinnitus will be reduced over-time by using an app like ReSound Relief.”
More information about ReSound apps, please click here.
Hearing aids in Chalfont, Bucks
For the very latest Digital hearing aids and earwax removal techniques visit the Chalfont hearing Centre
The Chalfont hearing centre can proudly boast of being one of the best independent hearing clinics in Bucks. Leon Cox the lead audiologist and owner know a thing or two when it comes to hearing aids and clearing earwax.
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Researchers Identify New Type of Vertigo, According to Study Published in ‘Neurology’
With vertigo, people have episodes of dizziness that can last from minutes to days. Vertigo can be caused by serious conditions, such as tumors, or conditions that are fairly benign, such the inner ear disorder Meniere’s disease. But for some people, no cause can be found.
In this new study, neurologists have identified a new type of vertigo where treatment may be effective.
“These conditions can be difficult to diagnose and quite debilitating for people, so it’s exciting to be able to discover this new diagnosis of a condition that may respond to treatment,” said study author Ji-Soo Kim, MD, PhD, of Seoul National University in Seongnam, South Korea.
To diagnose this new condition, the person sits in a dark room and the examiner moves the patient’s head forward and then the head is shaken horizontally for about 15 seconds. Then the patient opens his or her eyes and a video recording is taken of eye movements. The neurologists discovered that after the test, people with this new condition had eye movements called nystagmus that lasted longer than for other people. The new condition is called recurrent spontaneous vertigo with head-shaking nystagmus.
Among 338 people with vertigo with no known cause, 35 had this new condition and were included in the study. The participants had attacks of vertigo ranging from two or three times a week to once a year. They also experienced nausea or vomiting, headaches, and intolerance of head motions during the attacks.
The participants were compared to 35 people with other conditions that can cause vertigo, such Meniere’s disease, vestibular migraine, and vestibular neuritis. The test measured the time constant, or the time that represents the speed with which the reflexive eye movements can respond to change. For those with the new condition, the time constant during the primary phase of the nystagmus was 12 seconds, while it was six seconds for those with Meniere’s disease and five seconds for those with vestibular neuritis and vestibular migraine.
The neurologists also found that people with the new type of vertigo were more likely to have severe motion sickness than those with other types of vertigo.
A total of 20 of the 35 people with the new type of vertigo who had frequent attacks and severe symptoms were given preventive medication. About one-third of those had partial or complete recovery with the new medication. During the long-term follow-up of an average of 12 years after the first symptoms for 31 participants, five reported no more attacks, 14 said their symptoms had improved, and only one said symptoms had gotten worse.
Kim said that people with this condition may have a hyperactive mechanism in their vestibular system that helps the brain respond to movement of the body and in the environment.
“It’s possible that the vertigo occurs when this unstable mechanism is disrupted by factors either within the person’s body or in their environment,” Kim said.
The study was supported by the National Research Foundation of Korea. Learn more about the brain at www.BrainandLife.org, the American Academy of Neurology’s free patient and caregiver magazine and website focused on the intersection of neurologic disease and brain health. Follow Brain & Life on Facebook, Twitter, and Instagram.
The American Academy of Neurology is said to be the world’s largest association of neurologists and neuroscience professionals, with 34,000 members. The AAN is dedicated to promoting the highest quality patient-centered neurologic care. A neurologist is a doctor with specialized training in diagnosing, treating and managing disorders of the brain and nervous system such as Alzheimer’s disease, stroke, migraine, multiple sclerosis, concussion, Parkinson’s disease, and epilepsy.
Original Paper: Lee S-U, Jeong-Yoon C, Hyo-Jung K, Ji-Soo, K. Recurrent spontaneous vertigo with interictal headshaking nystagmus. Neurology. 2018. Available at: http://n.neurology.org/content/early/2018/05/23/WNL.0000000000005689
Source: AAN, Neurology
The best hearing centre in Bucks?
Here at The Chalfont hearing centre we don’t really go around saying we are the best hearing centre in Bucks all the time, but we do like to think we are one of the best.
We offer the most up to date tech for getting your hearing back to a liveable level that you will really notice. We also offer ear wax removal using the very gentle Microsuction Technique or the traditional water ear irrigation technique. As we are the leading audiology clinic in the area we do have the very latest in hearing tech and digital hearing aids.
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Brainwave Abnormality Could Be Common to Parkinson’s Disease, Tinnitus, Depression
Vanneste and his colleagues—Dr Jae-Jin Song of South Korea’s Seoul National University and Dr Dirk De Ridder of New Zealand’s University of Otago—analyzed electroencephalograph (EEG) and functional brain mapping data from more than 500 people to create what Vanneste believes is the largest experimental evaluation of TCD, which was first proposed in a paper published in 1996.
“We fed all the data into the computer model, which picked up the brain signals that TCD says would predict if someone has a particular disorder,” Vanneste said. “Not only did the program provide the results TCD predicted, we also added a spatial feature to it. Depending on the disease, different areas of the brain become involved.”
“The strength of our paper is that we have a large enough data sample to show that TCD could be an explanation for several neurological diseases.”
Brainwaves are the rapid-fire rhythmic fluctuations of electric voltage between parts of the brain. The defining characteristics of TCD begin with a drop in brainwave frequency—from alpha waves to theta waves when the subject is at rest—in the thalamus, one of two regions of the brain that relays sensory impulses to the cerebral cortex, which then processes those impulses as touch, pain, or temperature.
A key property of alpha waves is to induce thalamic lateral inhibition, which means that specific neurons can quiet the activity of adjacent neurons. Slower theta waves lack this muting effect, leaving neighboring cells able to be more active. This activity level creates the characteristic abnormal rhythm of TCD.
“Because you have less input, the area surrounding these neurons becomes a halo of gamma hyperactivity that projects to the cortex, which is what we pick up in the brain mapping,” Vanneste said.
While the signature alpha reduction to theta is present in each disorder examined in the study—Parkinson’s, pain, tinnitus, and depression—the location of the anomaly indicates which disorder is occurring.
“If it’s in the auditory cortex, it’s going to be tinnitus; if it’s in the somatosensory cortex, it will be pain,” Vanneste explained. “If it’s in the motor cortex, it could be Parkinson’s; if it’s in deeper layers, it could be depression. In each case, the data show the exact same wavelength variation—that’s what these pathologies have in common. You always see the same pattern.”
EEG data from 541 subjects was used. About half were healthy control subjects, while the remainder were patients with tinnitus, chronic pain, Parkinson’s disease, or major depression. The scale and diversity of this study’s data set are what set it apart from prior research efforts.
“Over the past 20 years, there have been pain researchers observing a pattern for pain, or tinnitus researchers doing the same for tinnitus,” Vanneste said. “But no one combined the different disorders to say, ‘What’s the difference between these diseases in terms of brainwaves, and what do they have in common?’ The strength of our paper is that we have a large enough data sample to show that TCD could be an explanation for several neurological diseases.”
With these results in hand, the next step could be a treatment study based on vagus nerve stimulation—a therapy being pioneered by Vanneste and his colleagues at the Texas Biomedical Device Center at UT Dallas. A different follow-up study will examine a new range of psychiatric diseases to see if they could also be tied to TCD.
For now, Vanneste is glad to see this decades-old idea coming into focus.
“More and more people agree that something like thalamocortical dysrhythmia exists,” he said. “From here, we hope to stimulate specific brain areas involved in these diseases at alpha frequencies to normalize the brainwaves again. We have a rationale that we believe will make this type of therapy work.”
Original Paper: Vanneste S, Song J-J, De Ridder D. Thalamocortical dysrhythmia detected by machine learning. Nature Communications. 2018;9(1103)
Source: Nature Communications, University of Texas at Dallas
Image: University of Texas at Dallas
Hearing aids and wax removal in Buckinghamshire
‘CNN’ Profiles Inventor of HearGlass
Peter Sprague, the 78-year-old inventor of HearGlass—a technology that incorporates amplification into eyeglass frames—is featured in a recent CNN profile.
According to the article, Sprague was frustrated by how standard hearing aids “distorted audio” and has incorporated directional microphones, Bluetooth and WiFi capabilities, and a discreet design into his fourth-generation prototype.
If you are closer to Henley try our Henley Hearing Clinic branch? http://www.henleyhearing.co.uk
Marshall Chasin, a frequent contributor to Hearing Review, was quoted in the article about the ways hearing aid manufacturers have improved their devices to help provide users with more dynamic sound options.
Chalfont hearing centre has the best and latest hearing aids in the county!
Chalfont hearing centre really do keep up with the latests and greatest in digital hearing tech. From the most up to date digital hearing aids to the state of the art microsuction for clearing earwax (ear wax). Chalfont hearing can also do you free hearing tests and recommend a path to getting you towards better hearing in crowds, noisy environments such as a cafe or restaurant. Talk with Leon Cox the lead audiologist at the Chalfont hearing centre and book your appointment now.
Oticon Brings Oticon Opn with Telecoil, Power Options, and Tinnitus SoundSupport to VA
Reportedly the “official supplier” of hearing devices to the Veterans Affairs Administration, Department of Defense, and other federal agencies, Oticon has already brought the Oticon Opn™ open sound experience to many US veterans and active duty military service personnel, the company announced. Now, the Oticon Government Services team will supply two new Opn solutions, Opn miniRITE-T and BTE Plus Power, and two new features, Tinnitus SoundSupport™ and Speech Rescue LX, to support the care provided by VA and government audiologists.
“Many hearing care professionals in the Veterans Affairs Administration have experienced firsthand how Opn’s benefits of less effort, better recall, and better speech understanding in noise provide real-world, practical, and significant impact on quality of life,” said David Horowitz, Oticon Government Services manager. “Now our expanded offerings bring even more benefits to more patients, especially veterans suffering with tinnitus, the most prevalent service-connected disability.”
Tinnitus SoundSupport is designed to enable VA audiologists to address the needs of veterans who experience both hearing loss and tinnitus with a range of customizable relief sounds, including broadband and ocean-like sounds. For veterans who prefer a telecoil, the small, discreet Opn miniRITE-T features a telecoil and tactile toggle switch for volume and program control. The Opn BTE 13 Plus Power gives veterans with hearing loss up to 105 dB HL access to Opn’s open sound experience. This hearing solution features a telecoil, toggle switch, and a two-color LED indicator.
All Opn styles and performance levels now also feature Speech Rescue LX, a feature that is designed to improve clarity and speech understanding for people with high-frequency hearing loss, according to Oticon. Speech Guard LX is designed to increase access to speech by rescuing speech cues that might otherwise be inaudible.
For more information about the expanded Oticon Opn family, visit www.Oticon.com/OPN.
Signia Launches Silk Nx Hearing Aids
Audiology technology company Signia announced its latest innovation, the new Silk Nx hearing aids. Re-engineered to be 20% smaller than its predecessor, these ready-to-wear, completely-in-canal (CIC) devices now include key features of Signia’s Nx hearing aid technology that are designed to deliver the most natural hearing experience.
With the new Silk Nx solutions, hearing aid wearers do not have to sacrifice size for performance in their hearing aids. Despite having designed the already small Silk hearing aids to be even tinier with this new release, they are also more powerful than ever. The result is what Signia calls a “discreet, instant-fit hearing solution with the highest level of sound quality.”
A practically invisible solution
Many hearing aid wearers, and especially those being fit for the first time, are insecure about others seeing their hearing aids. The Silk Nx were redesigned to be 20% smaller than previous models, according to Signia. As a result, they are designed for an improved fit rate and wearing comfort. They also feature darker faceplate colors that are designed to better blend into the ear canal and further decrease visibility.
Improved sound quality
Built upon Signia’s Nx technology platform, the new Silk is designed to provides wearers with the “most natural” hearing experience, according to the company. And Signia’s binaural beamforming technology is designed to allow clear speech understanding, even in noisy situations. Silk Nx hearing aids are also said to enable natural directionality and wireless streaming between both ears to make sure wearers hear what’s most important.
Silk hearing aids come ready-to-wear, with a secure fit for almost every ear. This is due to their super-soft and flexible silicone Click Sleeves, which are designed for a higher fit rate and are more durable than previous solutions.
More innovative features
The latest release also includes new features like TwinPhone, enabling wearers to put a phone up to one ear and hear the call through both hearing aids. They also represent what is said to be the “world’s first CIC solution” for single-sided deafness. With contralateral routing of signal (CROS) technology, Silk Nx hearing aids include wireless transmitters that transfer sound from the unaidable ear to the better ear, enabling the wearer to hear from both sides. Wearers also benefit from Signia’s apps, including the touchControl™ App and TeleCare™ 3.0, to provide greater control and convenience.
Oticon ConnectClip Wins 2018 Red Dot Award for Product Design
Commenting on the award win, Gary Rosenblum, president, Oticon, Inc said, “Oticon is honored to receive another prestigious Red Dot Award, this year for our new ConnectClip. This internationally recognized symbol of excellence is a testament not only to ConnectClip’s convenient, lifestyle-enhancing features, but also to the work that goes into the design and continued evolution of our Oticon Opn hearing aid, a 2017 Red Dot Award winner.”
The multi-functional ConnectClip is designed to turn Oticon Opn hearing aids into a high-quality wireless headset for clear, hands-free calls from mobile phones, including iPhone® and Android™ smartphones. Sound from the mobile phones is streamed directly to the hearing aids and ConnectClip’s directional microphones pick up the wearer’s voice. ConnectClip serves double duty as a remote/partner microphone, helping to provide improved intelligibility of the speaker wearing it, either at a distance (up to 65 feet), in very noisy environments or in a combination of the two. Opn wearers can also use ConnectClip as a remote control for their hearing aids.
Wearable Technology Award Win
Oticon also celebrates a win at the UK’s Wearable Technology and Digital Health Show Awards. Oticon Opn received the Innovation Award for wearable originality and advancement. The win reflects votes by a combined method of professional jury and public website vote.
Organizers at the Wearable Technology and Digital Health Show Awards commented on the win: ”The judges felt that the Oticon solution presented a revolutionary approach to hearing loss, and that its technology presented a real opportunity for users to interact with the growing number of smart devices in the home. A worthy winner.”
Learn more about the expanded Oticon Opn family, ConnectClip and entire range of wireless connectivity accessories at www.Oticon.com/Connectivity.
* Apple, the Apple logo, iPhone, iPad, iPod touch, and Apple Watch are trademarks of Apple Inc., registered in the U.S. and other countries. App Store is a service mark of Apple Inc. Android, Google Play, and the Google Play logo are trademarks of Google Inc.
Images: Oticon, Red Dot
New Hearing Devices in Development May Expand Range of Human Hearing
Researchers at Case Western Reserve University are developing atomically thin ‘drumheads’ able to receive and transmit signals across a radio frequency range far greater than what we can hear with the human ear, the University announced in a press release.
But the drumhead is tens of trillions times (10 followed by 13 zeros) smaller in volume and 100,000 times thinner than the human eardrum.
It’s been said that the advances will likely contribute to making the next generation of ultralow-power communications and sensory devices smaller and with greater detection and tuning ranges.
“Sensing and communication are key to a connected world,” said Philip Feng, an associate professor of electrical engineering and computer science and corresponding author on a paper about the work published March 30 in the journal Science Advances. “In recent decades, we have been connected with highly miniaturized devices and systems, and we have been pursuing ever-shrinking sizes for those devices.”
The challenge with miniaturization: Also achieving a broader dynamic range of detection, for small signals, such as sound, vibration, and radio waves.
“In the end, we need transducers that can handle signals without losing or compromising information at both the ‘signal ceiling’ (the highest level of an undistorted signal) and the ‘noise floor’ (the lowest detectable level),” Feng said.
While this work was not geared toward specific devices currently on the market, researchers said, it was focused on measurements, limits, and scaling which would be important for essentially all transducers.
Those transducers may be developed over the next decade, but for now, Feng and his team have already demonstrated the capability of their key components—the atomic layer drumheads or resonators—at the smallest scale yet.
The work represents the highest reported dynamic range for vibrating transducers of their type. To date, that range had only been attained by much larger transducers operating at much lower frequencies—like the human eardrum, for example.
“What we’ve done here is to show that some ultimately miniaturized, atomically thin electromechanical drumhead resonators can offer remarkably broad dynamic range, up to ~110dB, at radio frequencies (RF) up to over 120MHz,” Feng said. “These dynamic ranges at RF are comparable to the broad dynamic range of human hearing capability in the audio bands.”
New dynamic standard
Feng said the key to all sensory systems, from naturally occurring sensory functions in animals to sophisticated devices in engineering, is that desired dynamic range.
Dynamic range is the ratio between the signal ceiling over the noise floor and is usually measured in decibels (dB).
Human eardrums normally have dynamic range of about 60 to 100dB in the range of 10Hz to 10kHz, and our hearing quickly decreases outside this frequency range. Other animals, such as the common house cat or beluga whale, can have comparable or even wider dynamic ranges in higher frequency bands.
The vibrating nanoscale drumheads developed by Feng and his team are made of atomic layers of semiconductor crystals (single-, bi-, tri-, and four-layer MoS2 flakes, with thickness of 0.7, 1.4, 2.1, and 2.8 nanometers), with diameters only about 1 micron.
They construct them by exfoliating individual atomic layers from the bulk semiconductor crystal and using a combination of nanofabrication and micromanipulation techniques to suspend the atomic layers over microcavities predefined on a silicon wafer, and then making electrical contacts to the devices.
Further, these atomically thin RF resonators being tested at Case Western Reserve show excellent frequency ‘tunability,’ meaning their tones can be manipulated by stretching the drumhead membranes using electrostatic forces, similar to the sound tuning in much larger musical instruments in an orchestra, Feng said.
The study also reveals that these incredibly small drumheads only need picoWatt (pW, 10^-12 Watt) up to nanoWatt (nW, 10^-9 Watt) level of RF power to sustain their high frequency oscillations.
“Not only having surprisingly large dynamic range with such tiny volume and mass, they are also energy-efficient and very ‘quiet’ devices,” Feng said. “We ‘listen’ to them very carefully and ‘talk’ to them very gently.”
The paper’s co-authors were: Jaesung Lee, a Case Western Reserve post-doctoral research associate; Max Zenghui Wang, a former research associate now at the University of Electronic Science and Technology of China (UESTC), Chengdu, China; Keliang He, a former graduate student in physics, now a senior engineer at Nvidia; Rui Yang, a former graduate student and now a post-doctoral scholar at Stanford University; and Jie Shan, a former physics professor at Case Western Reserve now at Cornell University.
The work has been financially supported by the National Academy of Engineering Grainger Foundation Frontiers of Engineering Award (Grant: FOE 2013-005) and the National Science Foundation CAREER Award (Grant: ECCS-1454570).
Original Paper: Lee J, Wang Z, He K, Yang R, Shan J, Feng PX-L. Electrically tunable single- and few-layer MoS2nanoelectromechanical systems with broad dynamic range. Science Advances. 2018;4(3):eaao6653.
Source: Case Western Reserve University, Science Advances
City, University of London to Pilot Language and Reading Intervention for Children
Researchers from City, University of London have been awarded £97k ($USD approximately $136,479) from the Nuffield Foundation to pilot a language and reading intervention with 120 children in their first year of formal education, the school announced on its website.
Involving Dr Ros Herman, Professor Penny Roy, and Dr Fiona Kyle from the School of Health Science’s Division of Language and Communication Science, in collaboration with Professor Charles Hulme from Oxford University, the study—which is reportedly the first reading intervention study to include both deaf and hearing children—will trial the new intervention in primary schools for a year and compare outcomes with other schools that offer the standard literacy teaching.
The research team have shown in previous research that many severely and profoundly deaf children have significant reading delays, yet are typically excluded from reading intervention research.
In this new study, teachers will be trained to deliver the intervention program, comprising systematic phonics teaching alongside a structured vocabulary program, during the school literacy hour. The study will investigate whether all children, or only specific groups of children, benefit from the integrated program and whether a full-scale evaluation is merited.
Dr Herman said, “Our previous research has revealed the scale of reading difficulties among deaf children. Our findings suggest that deaf children will benefit from specialist literacy interventions such as those currently offered to hearing children with dyslexia. In addition, deaf children and many hearing children require ongoing support to develop the language skills that underlie literacy.
“As a result we hope our new study, which will pilot a combined language and reading intervention, will address these issues so that teachers can provide the vital support needed to prevent both hearing and deaf children from unnecessarily falling behind their peers.”
Source: City, University of London