ElectroActivePolymer
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ViviTouch haptic technology hands-on: electroactive polymer giving a 'high definition feel'
Haptic feedback isn't exactly something that'd blow people's mind these days, with most mobile devices and gaming controllers already packing a little vibrator to spice up one's gaming experience. While these motors do the job just fine for delivering the sensation of large engines and explosions, their monotonic performance and relatively high minimum output threshold means they can't reproduce finer vibration. For instance, you wouldn't be able to feel a guitar string fade away after a strum, nor would you feel the finer end of a spring recoil. This is where Bayer MaterialScience's ViviTouch -- previously dubbed Reflex -- tries to fill the void. For those who aren't familiar, the magic behind ViviTouch is its electroactive polymer (or EAP in short) -- imagine a thin sheet that consists of two electrode layers sandwiching a dielectric elastomer film, and when a voltage is applied, the two attracting electrodes compress the entire sheet. This slim, low-powered ViviTouch actuator module can be placed underneath an inertial mass (usually a battery) on a tray, thus amplifying the haptic feedback produced by the host device's audio signal between 50Hz and 300Hz (with a 5ms response time). %Gallery-134043%
Braille Buddy concept keyboard teaches six-dot typing
We've seen any number of gadgets designed to help the visually impaired read (and even occasionally drive), but it's not all that often peripherals come along that teach Braille in the first place. Yasaman Sheri's Braille Buddy concept is clearly the exception to that rule -- it's a six-key device that unfolds like a pearly-white Batarang and audibly speaks letters to you. Would-be learners can then feel the six-dot formation of each corresponding Braille character on the electroactive polymer screen up top, then key in the newly-learned unit of writing with the six buttons on the swinging handles below. A description at Yanko Design suggests Sheri is serious about making these available at libraries and schools, where they'll hopefully spend more time generating text than sailing through the air. Spot the device unfolded right after the break.
NC State's refreshable Braille display could revolutionize reading for the blind
While many in Raleigh are wondering whatever happened to the glory days of 1983, Dr. Neil Di Spigna and company are doing far more productive things at NC State. It's no secret that the holy grail of Braille is a tactile display that could change on a whim in order to give blind viewers a way to experience richer content (and lots more of it) when reading, but not until today have we been reasonably confident that such a goal was attainable. Gurus at the university have just concocted a "hydraulic and latching mechanism" concept, vital to the creation of the full-page, refreshable Braille display system. As you may expect, the wonder of this solution is the display's ability to erect dots at the precise points, retract them, and re-erect another set when the reader scrolls through a document or presses a "link" on a website. We're told that the researchers have already presented their findings, and if all goes well, they'll have a fully functioning prototype "within a year." Here's hoping a suitable replacement to Lee Fowler is also unearthed during the same window.
