Summary: Researchers use nanotech to enhance vision in mice, enabling them to see infrared light as well as visible light.
Source: Cell Press.
Mice with vision enhanced by nanotechnology were able to see infrared light as well as visible light, reports a study published February 28 in the journal Cell. A single injection of nanoparticles in the mice’s eyes bestowed infrared vision for up to 10 weeks with minimal side effects, allowing them to see infrared light even during the day and with enough specificity to distinguish between different shapes. These findings could lead to advancements in human infrared vision technologies, including potential applications in civilian encryption, security, and military operations.
Humans and other mammals are limited to seeing a range of wavelengths of light called visible light, which includes the wavelengths of the rainbow. But infrared radiation, which has a longer wavelength, is all around us. People, animals and objects emit infrared light as they give off heat, and objects can also reflect infrared light.
“The visible light that can be perceived by human’s natural vision occupies just a very small fraction of the electromagnetic spectrum,” says senior author Tian Xue of the University of Science and Technology of China. “Electromagnetic waves longer or shorter than visible light carry lots of information.”
A multidisciplinary group of scientists led by Xue and Jin Bao at the University of Science and Technology of China as well as Gang Han at the University of Massachusetts Medical School, developed the nanotechnology to work with the eye’s existing structures.
“When light enters the eye and hits the retina, the rods and cones–or photoreceptor cells–absorb the photons with visible light wavelengths and send corresponding electric signals to the brain,” says Han. “Because infrared wavelengths are too long to be absorbed by photoreceptors, we are not able to perceive them.”
In this study, the scientists made nanoparticles that can anchor tightly to photoreceptor cells and act as tiny infrared light transducers. When infrared light hits the retina, the nanoparticles capture the longer infrared wavelengths and emit shorter wavelengths within the visible light range. The nearby rod or cone then absorbs the shorter wavelength and sends a normal signal to the brain, as if visible light had hit the retina.
Image Credit: 123RF
Thanks to Heinz V. Hoenen. Follow him on twitter: @HeinzVHoenen
News This Week
DREAM complex could hold key to fighting cancer and living longer
DNA may be the stuff of life, but if it isn't repaired in our bodies on a regular basis, it can lead to diseases that can cause some pretty unpleasant types of death. DNA [...]
A Promising New Pathway in the Battle Against Aggressive Prostate Cancer
Neuronal Molecule Makes Prostate Cancer More Aggressive Researchers discover a potential therapeutic avenue against an aggressive form of prostate cancer. Prostate cancer is the second most common cancer and the second leading cause of [...]
Nasal Vaccines: Stopping the COVID-19 Virus Before It Reaches the Lungs
The Pfizer-BioNTech and Moderna mRNA vaccines have played a large role in preventing deaths and severe infections from COVID-19. But researchers are still in the process of developing alternative approaches to vaccines to improve [...]
NASA Tracking a Huge, Growing Anomaly in Earth’s Magnetic Field – with video
NASA is actively monitoring a strange anomaly in Earth's magnetic field: a giant region of lower magnetic intensity in the skies above the planet, stretching out between South America and southwest Africa. This vast, developing [...]
New, Better Models Show How Infectious Diseases Like COVID-19 Spread
Infectious diseases such as COVID-19 can spread rapidly across the globe. Models that can predict how such diseases spread will strengthen national surveillance systems and improve public health decision-making. The COVID-19 pandemic has emphasized the [...]
Human Antibodies Discovered That Can Block Multiple Coronaviruses Including COVID-19
Results from a Scripps Research and UNC team pave the way for a vaccine and therapeutic antibodies that could be stockpiled to fight future coronavirus pandemics. A team of scientists from Scripps Research and [...]
Nanotechnology could be used to treat lymphedema
The human body is made up of thousands of tiny lymphatic vessels that ferry white blood cells and proteins around the body, like a superhighway of the immune system. It's remarkably efficient, but if [...]
DNA Nanotechnology Tools – From Design to Applications
Suite of DNA nanotechnology devices engineered to overcome specific bottlenecks in the development of new therapies, diagnostics, and understanding of molecular structures. DNA nanostructures with their potential for cell and tissue permeability, biocompatibility, and [...]
Regenerating bone with deer antler stem cells
Scientists from a collection of Chinese research institutions collaborated on a study of organ regeneration in mammals, finding deer antler blastema progenitor cells are a possible source of conserved regeneration cells in higher vertebrates. [...]
AI Takes On Cancer: Analysis of Mutations Could Lead to Improved Therapy
Cancer is a complex and diverse disease, and its range of associated mutations is vast. The combination of these genomic changes in an individual is referred to as their “mutational landscape.” These landscapes vary [...]
Exposing tumours to bacteria converts immune cells to cancer killers
New research on inflammation could lead to better treatments to improve outcomes for people with advanced or previously untreatable cancers. Introducing bacteria to a tumour’s microenvironment creates a state of acute inflammation that triggers [...]
Smart nanotechnology for more accurate delivery of insulin
More efficient and longer lasting glucose-responsive insulin that eliminates the need for people with type 1 diabetes to measure their glucose levels could be a step closer thanks to a Monash University-led project. Published [...]
Efficiently Harvesting Rare Earth Elements From Wastewater Using Exotic Bacteria
The novel strains of cyanobacteria exhibit a fast and efficient “biosorption” of rare earth elements, making recycling possible. Rare earth elements (REEs) are a set of 17 metallic elements that possess similar chemical properties. [...]
Resisting Treatment: Cancer Cells Shrink or Super-Size To Survive
A new approach to image analysis has uncovered how cancer cells manipulate their size as a means of resisting treatment. Researchers have discovered that cancer cells are capable of either shrinking or super-size themselves [...]
New Research Explains Why Children Avoid Severe COVID-19 Symptoms
According to new research, children exhibit a robust initial immune response to the coronavirus, however, they are unable to transfer this response to long-lasting memory T cells like adults do. Researchers led by scientists [...]
Scientists Unravel Protein Map of Mitochondria
A new study sheds light on the organization of proteins within mitochondria. Mitochondria, the “powerhouses” of cells, play a crucial role in the energy production of organisms and are involved in various metabolic and [...]
Leave A Comment