Lens Could Give Schools, Clinics Low-Cost Alternative to Conventional Equipment
Researchers at the University of Houston have created an optical lens that can be placed on an inexpensive smartphone to amplify images by a magnitude of 120, all for just 3 cents a lens.
Wei-Chuan Shih, assistant professor of electrical and computer engineering at UH, said the lens can work as a microscope, and the cost and ease of using it – it attaches directly to a smartphone camera lens, without the use of any additional device – make it ideal for use with younger students in the classroom.
It also could have clinical applications, allowing small or isolated clinics to share images with specialists located elsewhere, he said.
In a paper published in the Journal of Biomedical Optics, Shih and three graduate students describe how they produced the lenses and examine the image quality. Yu-Lung Sung, a doctoral candidate, served as first author; others involved in the study include Jenn Jeang, who will start graduate school at Liberty University in Virginia this fall, and Chia-Hsiung Lee, a former graduate student at UH now working in the technology industry in Taiwan.
The lens is made of polydimethylsiloxane (PDMS), a polymer with the consistency of honey, dropped precisely on a preheated surface to cure. Lens curvature – and therefore, magnification – depends on how long and at what temperature the PDMS is heated, Sung said.
The resulting lenses are flexible, similar to a soft contact lens, although they are thicker and slightly smaller.
“Our lens can transform a smartphone camera into a microscope by simply attaching the lens without any supporting attachments or mechanism,” the researchers wrote. “The strong, yet non-permanent adhesion between PDMS and glass allows the lens to be easily detached after use. An imaging resolution of 1 (micrometer) with an optical magnification of 120X has been achieved.”
Conventional lenses are produced by mechanical polishing or injection molding of materials such as glass or plastics. Liquid lenses are available, too, but those that aren’t cured require special housing to remain stable. Other types of liquid lenses require an additional device to adhere to the smartphone.
This lens attaches directly to the phone’s camera lens and remains attached, Sung said; it is reusable.
The Latest on: Smartphone microscope
via Google News
The Latest on: Smartphone microscope
- An ultrafast microscope for quantum worldon January 24, 2020 at 8:32 am
This microscope – a sort of HD camera for the quantum world ... For example, the things taking place inside the increasingly powerful components of computers or smartphones not only happen extremely ...
- How Dendron school in Limpopo turns out star science studentson January 17, 2020 at 4:30 pm
You won’t find microscopes, Bunsen burners or chemicals at Dendron secondary ... Subscribe now and get unlimited digital access on web and our smartphone and tablet apps, free for your first month.
- Time for the Human Screenome Projecton January 16, 2020 at 2:19 am
Recordings of smartphone use by two 14-year-olds living in the same northern California community ... Others might argue that even with this better microscope, we will not find anything significant.
- Make your smartphone a microscope with this device — Future Blinkon January 9, 2020 at 4:00 pm
Mashable is a global, multi-platform media and entertainment company. Powered by its own proprietary technology, Mashable is the go-to source for tech, digital culture and entertainment content ...
- Use Your Smartphone As A Microscope For Less Than $10on December 29, 2019 at 4:00 pm
[Yoshinok] recently posted an Instructable on doing a $10 smartphone-to-microscope conversion. The hack isn’t so much a conversion as just a handy jig, but it’s still interesting. The basic ...
- UB stories heard around the world in 2019on December 26, 2019 at 5:55 am
Whether we are peering through a microscope or considering problems of a cosmological ... That curiosity led to EarEcho, a biometric tool that authenticates smartphone users via the unique geometry of ...
- 3D-Printable Clip-On Turns Smartphone Into Powerful Microscopeon December 18, 2019 at 4:00 pm
If there is one thing holding people back from doing more mobile science, it’s the lack of a 3D printable clip-on that turns any smartphone into a fully functional microscope. But, thanks to ...
- If You've Ever Wanted a Smartphone Microscope, Now's Your Chanceon November 22, 2019 at 8:13 am
In the not-so-distant future, there will be a new kind of microscope on the market. One that can easily fit in a backpack or purse and zoom in up to 1,000 times, making it possible for pretty much ...
- UA researchers create smartphone microscope to test for virus in wateron September 16, 2019 at 3:00 am
Using a smartphone microscope, people can test water samples in real time. The microscope is attached to the smartphone, the water sample is inserted and then analyzed by an app. The app will tell ...
- Smartphone app and attachable microscope can detect outbreaks of norovirus for just £40on August 27, 2019 at 4:22 am
The clumps of beads are large enough for a smartphone microscope to detect and photograph. Then, a smartphone app the researchers created counts the number of illuminated pixels in the image to ...
via Bing News