| Researchers found a way to create lasers smaller than red blood cells. These microlasers convert infrared light into light at higher frequencies. Made from nanoparticles, these are among the smallest, continuously emitting lasers of their kind ever reported. | |
| The lasers constantly and stably emit light for hours at a time. They emit the light even when submerged in blood serum or other biological fluids. | |
| The tiny lasers are stable enough to operate continuously for days. This breakthrough will enable technologies for imaging or controlling biological activity with infrared light. In addition, these tiny lasers open doors to make light-based computer chips. |
| An international team of researchers led by scientists at the Molecular Foundry has found a way to convert nanoparticle-coated microscopic plastic beads into lasers smaller than red blood cells.These microlasers, which convert infrared light into light at higher frequencies, are among the smallest, continuously emitting lasers of their kind ever reported and constantly and stably emit light for hours at a time, even when submerged in biological fluids such as blood serum. | |
| The innovation opens up the possibilities for imaging or controlling biological activity with infrared light and for the fabrication of light-based computer chips. | |
| In this study (Nature Nanotechnology, “Continuous-wave upconverting nanoparticle microlasers”), the researchers found that when an infrared laser excites thulium-doped nanoparticles coated on the surface of the beads, the light emitted by the nanoparticles bounces around the inner surface of the bead just like whispers bouncing along the walls of a whispering gallery. |
Image Credit: Berkeley Lab
News This Week
New, better coronavirus rapid test
Researchers at the Paul Scherrer Institute PSI and the University of Basel have developed a rapid test for COVID-19. Its novel functional principle promises reliable and quantifiable results concerning a patient's COVID-19 disease and [...]
Bio-Inspired Nanocoating Improves NIR and Biomedical Properties of Titanium Alloy
A group of researchers proposed an optimized electroforming strategy to achieve a bioinspired nano-holed TiO2 coated Ti6Al4V alloy, according to a study published in the journal ACS Applied Material Interfaces. Near-infrared (NIR) energy plays a critical part [...]
Seeking a hydrophilic nanoparticle solution to antibiotic resistance
The Centers for Disease Control and Prevention estimates that more than 2.8 million Americans experience antibiotic-resistant infections each year; more than 35,000 die from those infections. To address this critical and worldwide public health [...]
Nano-sized vesicles with ACE2 receptor could prevent, treat infection of SARS-CoV-2
Scientists at The University of Texas MD Anderson Cancer Center and Northwestern Medicine have identified natural extracellular vesicles containing the ACE2 protein (evACE2) in the blood of COVID-19 patients that can block infection from [...]
‘Superpower’ nano bubbles could treat, prevent current and future strains of SARS-CoV-2
Scientists at Northwestern Medicine and The University of Texas MD Anderson Cancer Center have identified natural nano-bubbles containing the ACE2 protein (evACE2) in the blood of COVID-19 patients and discovered these nano-sized particles can [...]
Groundbreaking AI Technology Diagnoses COVID-19 In Minutes
Pioneering Artificial Intelligence (AI) technology, developed by experts at University of the West of Scotland (UWS), is capable of accurately diagnosing Covid-19 in just a few minutes. The groundbreaking program is able to detect [...]
Antimicrobial resistance now a leading cause of death worldwide, study finds
Antimicrobial resistance poses a significant threat to humanity, health leaders have warned, as a study reveals it has become a leading cause of death worldwide and is killing about 3,500 people every day. More [...]
Evaluating Antiviral Activities of Nanoparticles Could Help Prevent Future Pandemics
The Necessity of Novel Antiviral Materials With the severe acute respiratory coronavirus 2 (SARS-CoV-2) being highly infectious and transmissible, the need for novel antiviral materials that can decrease viral activities has become paramount. Preparation procedures [...]
Nanocarrier therapy offers new hope for the treatment of Type 1 diabetes
Individuals living with Type 1 diabetes must carefully follow prescribed insulin regimens every day, receiving injections of the hormone via syringe, insulin pump or some other device. And without viable long-term treatments, this course [...]
Nanobubbles provide pathway to build better medical devices
Researchers from the University of Sydney Nano Institute and School of Chemistry have revealed that tiny gas bubbles – nanobubbles just 100 billionths of a metre high – form on surfaces in unexpected situations, [...]
Nanocomposite Hydrogel Improves Bone Repair Treatment
Innovative researchers have investigated the potential of incorporating a gelatin methacryloyl hydrogel functionalized with synthetic nanoclay laponite to improve the delivery of osteoblast derived extracellular vesicles for increased bone repair. This research has been [...]
Bioengineered nanoparticles show promise for fibrinogen manufacture
A couple of essential biomolecules play a key role in the process of blood clotting. One of these is a protein called fibrinogen. It is often given to those who have experienced heavy bleeding, [...]
Applying Nanoemulsions to the Food Sector
Nanoemulsions are a relatively new technology that has found significant use for delivering functional chemicals such as micronutrients, flavorings, bioactive molecules, and antimicrobial agents into food and beverage products. This article focuses on applying [...]
Researchers develop new method to increase effectiveness of nanomedicines
Researchers at Penn Medicine have discovered a new, more effective method of preventing the body's own proteins from treating nanomedicines like foreign invaders, by covering the nanoparticles with a coating to suppress the immune [...]
Researchers Create Nanobombs Capable of Attacking Only the Cancer Cells
Bioinspired by tunicates and mussels, a Korean research team has created a “bomb-like” anticancer therapeutic agent that only destroys cancer cells. Schematic diagram of the mechanism of action of photoactivatable adhesive nanobombs made with [...]
Long COVID could become Finland’s largest chronic disease, warns minister
(Reuters) - “Long COVID”, where symptoms of COVID-19 persist for months after an initial infection, could be emerging as a chronic disease in Finland, Minister of Family Affairs and Social Services Krista Kiuru said [...]
