 |
Your Own Handheld Biosensor
Convert your iPhone to a handheld biosensor with this cradle and app developed by University of Illinois at Urbana-Champaign researchers.
(iPhone-based handheld biosensor)
Utilizing its integrated camera as a spectrometer, we demonstrate the use of a smartphone as the detection instrument for a label-free photonic crystal biosensor. A custom-designed cradle holds the smartphone in fixed alignment with optical components, allowing for accurate and repeatable measurements of shifts in the resonant wavelength of the sensor. Externally provided broadband light incident upon an entrance pinhole is subsequently collimated and linearly polarized before passing through the biosensor, which resonantly reflects only a narrow band of wavelengths. A diffraction grating spreads the remaining wavelengths over the camera's pixels to display a high resolution transmission spectrum.The photonic crystal biosensor is fabricated on a plastic substrate and attached to a standard glass microscope slide that can easily be removed and replaced within the optical path.
A custom software app was developed to convert the camera images into the photonic crystal transmission spectrum in the visible wavelength range, including curve-fitting analysis that computes the photonic crystal resonant wavelength with 0.009 nm accuracy.
We demonstrate the functionality of the system through detection of an immobilized protein monolayer, and selective detection of concentration-dependent antibody binding to a functionalized photonic crystal.
We envision the capability for an inexpensive, handheld biosensor instrument with web connectivity to enable point-of-care sensing in environments that have not been practical previously.
Science fiction fans have been teased with the idea of a powerful handheld biosensor for quite a while. In the 1960's, fans of Star Trek (TOS) recall the handheld tricorders used by both Mr. Spock and Dr. McCoy.
(Medical tricorder)
More specifically, though, I recall the boink biosensor from Richard Preston's 1997 novel The Cobra Event and the WAGD germ detector from Greg Bear's excellent 2007 novel Quantico.
From Label-free biodetection using a smartphone via KurzweilAI.
Scroll down for more stories in the same category. (Story submitted 5/29/2013)
Follow this kind of news @Technovelgy.| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
Would
you like to contribute a story tip?
It's easy:
Get the URL of the story, and the related sf author, and add
it here.
Comment/Join discussion ( 0 )
Related News Stories - (" Medical ")
BioVYZR Is Ready, Anti-Covid19 PAPR Lovers
'Some clad in the insulated space-suits, with their transparent glassite helmets.' - Edmond Hamilton, 1931.
Healight Ultraviolet Endotracheal Device Has Covid-19 Treatment Potential
'He applied the tip of the instrument to the interior of the wound...' - Cogswell, 1976.
Beat Covid-19 With AIR By MicroClimate - At Last I Get My PAPR
More than just a bubble.
EPR Is Quick, Temporary Biostasis
'The cold-pack was being sucked out greedily by plastic suction tendrils...' - Philip K. Dick, 1960.
Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Invention Timeline, or see what's New.
Current News
Jet-Powered Flying Suits Tested By Navy
'With his motor in operation, he moves like a diver, head foremost...'
Pub Installs Electrified Fence Around Bar
'I start twelve immensely strong wires--naked, not insulated --from a big dynamo...'
What Does A Tesla Full Self-Driving Car See?
'All objects within my panoramic gaze trembled and vibrated like quick motion pictures...'
BioVYZR Is Ready, Anti-Covid19 PAPR Lovers
'Some clad in the insulated space-suits, with their transparent glassite helmets.'
Tesla Will Have Metal Gear Snake Autocoupler, Musk Confirms
'Its motion was so swift, complex, and perfect that at first I did not see it as a machine, in spite of its metallic glitter.'
Starlink Satellites Leading Edge On-Orbit Debris Mitigation
Propulsion-assisted orbital decay, brought to you by SpaceX.
Healight Ultraviolet Endotracheal Device Has Covid-19 Treatment Potential
'He applied the tip of the instrument to the interior of the wound...'
Parents Use AI To See One Last Message From Their Deceased Son
'...what's to keep me from showing face, Man?'
Satoshi Tomizu Creates Pocket Universes And Worldcraft Bubbles In Glass
'The Worldcraft bubble glittered, catching the light...'
Space Hero Inc. Offers Trip To ISS As Reality Show Prize
'This is Elmer Schmitz, presenting to you the finalists in our Aviation Quiz Program...'
I Love Ceiling-Mounted Robots
'Immediately an enormous apparatus fell on to her out of the ceiling...'
Armano Remote Control Excavator
'The bulldozer moved through the... mine... '
OK, NASA 3D Printer Of Food Not Yet Star Trek Food Synthesizer
Maybe not, but we're seeing definite progress.
Kelly Clarkson Show Like Black Mirror '15 Million Merits'
'These people are pieces of software called avatars.'
Salto Jumping Robot Now Sticks Landing!
'Lucky touched the leap knob and the hopper's leg retracted.'
Gyroscopic Median-Straddling Mass Transit Vehicles
'It was among these leviathans that the little gyrocar was daring to thrust its puny self...'
