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
- Intel exits the 5G smartphone modem business after Apple settles with Qualcomm on April 17, 2019 at 5:44 am
Apple, of course, now has a secure pipeline of 5G modems, while Qualcomm doesn’t have to worry about the entirety of its business model being put underneath the microscope and potentially being ... […]
- ‘Transformative' microscope to be installed at Purdue on April 15, 2019 at 8:07 am
Previous generation cryo-electron microscopes utilize CCD circuits (which use the same technology found in smartphone cameras) for their images. The new generation of cryo-electron microscopes, ... […]
- Digital cytology: The future of clinical pathology on April 12, 2019 at 8:59 pm
Enter option number three: digital cytology. Capturing images of microscope slides is not a new phenomenon. Many of us have pointed a smartphone down an eyepiece and texted the photo to a former ... […]
- Samsung Galaxy S10 fingerprint sensor defeated by a $450 3D printer on April 8, 2019 at 8:24 am
which looks a bit like a glass microscope slide. Fingerprint sensors work by measuring and storing the ridges and valleys in your finger, and various types have come to mainstream smartphones over ... […]
- Turn your smartphone into a medical diagnostics microscope on April 5, 2019 at 6:02 pm
If your eye is oozing and red, and an infection is suspected, you need to make an appointment with your doctor and get a lab analysis before you can start antibiotic treatment. ... […]
- This Bellevue teen wants to fight sickle-cell disease with smartphones on March 27, 2019 at 5:03 am
Two years and many late nights later, Saxena completed HemaCam, a machine-learning web app that can employ any smartphone to diagnose sickle cell disease with 95 percent accuracy when combined with a ... […]
- Turn your smartphone into a medical diagnostics microscope on March 17, 2019 at 11:33 pm
If your eye is oozing and red and you suspect you have an infection, you have to make an appointment with your doctor and get a lab analysis before you can start treatment with antibiotics. ... […]
- Is the future of health technology already in our hands? on February 14, 2019 at 1:58 am
Although the researchers said the quality of smartphone recordings isn't comparable with that of conventional devices, they are cheap, accessible and can do the job. Mobile microscopes could be vital ... […]
- UCLA researchers develop smartphone-based microscope to detect lethal bee parasites on February 14, 2019 at 12:22 am
UCLA researchers helped develop a smartphone-based microscope to detect parasites in bees. Aydogan Ozcan, the associate director of the California NanoSystems Institute at UCLA, developed a 3D-printed ... […]
- Using smartphone confocal microscopes to stop cancer on November 20, 2018 at 11:17 am
Dongkyun "DK" Kang was in the shower a few years ago when inspiration struck, and he became interested in the idea of imaging human tissue in vivo, or on a living person, using a smartphone attached ... […]
via Bing News