An official website of the United States government.
Atomically thin semiconductors known as transition metal dichalcogenides (TMDCs) could lead to devices that operate more efficiently than conventional semiconductors in light-emitting diodes, lasers, and solar cells. Now scientists have discovered that when they applied an electrical voltage to TMDCs made of molybdenum disulfide and tungsten disulfide, their efficiency increases significantly.
Atomically thin semiconductors known as transition metal dichalcogenides (TMDCs) could lead to devices that operate more efficiently than conventional semiconductors in light-emitting diodes, lasers, and solar cells. Now scientists have discovered that when they applied an electrical voltage to TMDCs made of molybdenum disulfide and tungsten disulfide, their efficiency increases significantly.
Researchers have shown they could boost the efficiency of a nanotechnology-enabled solar membrane desalination system by more than 50% by adding inexpensive plastic lenses to concentrate sunlight into 'hot spots.’ The solar desalination system reduces production costs, and engineers are working to scale it up for applications in remote areas that have no access to electricity.
Researchers have shown they could boost the efficiency of a nanotechnology-enabled solar membrane desalination system by more than 50% by adding inexpensive plastic lenses to concentrate sunlight into 'hot spots.’ The solar desalination system reduces production costs, and engineers are working to scale it up for applications in remote areas that have no access to electricity.
Researchers have developed a technology that uses a laser beam to detect and destroy tumor cells in the veins of patients with melanoma, a deadly form of skin cancer. The research team was able to kill a high percentage of the cancer-spreading cells, in real time, as they raced through the veins of the participants. If developed further, the tool could give doctors a harmless, noninvasive, and thorough way to hunt and destroy cancer cells before those cells can form new tumors in the body.
Researchers have developed a technology that uses a laser beam to detect and destroy tumor cells in the veins of patients with melanoma, a deadly form of skin cancer. The research team was able to kill a high percentage of the cancer-spreading cells, in real time, as they raced through the veins of the participants. If developed further, the tool could give doctors a harmless, noninvasive, and thorough way to hunt and destroy cancer cells before those cells can form new tumors in the body.
Engineers have developed a simple home medical test consisting of various silicon chips coated in a special film. One chip could detect drugs in the blood, another could detect proteins in the urine indicating infection, and another could detect bacteria in water. The engineers imagine a user picking the bodily fluid to test, taking a picture with a smartphone, and an app would indicate if there is a problem.
Engineers have developed a simple home medical test consisting of various silicon chips coated in a special film. One chip could detect drugs in the blood, another could detect proteins in the urine indicating infection, and another could detect bacteria in water. The engineers imagine a user picking the bodily fluid to test, taking a picture with a smartphone, and an app would indicate if there is a problem.
Scientists have found a way to turn graphene into a topological insulator – a material that is an insulator in its interior but is highly conducting on its surface. Realizing a topological insulator in graphene could provide a basis for low-dissipation ballistic electrical circuits or could form the material substrate for topologically protected quantum bits.
Scientists have found a way to turn graphene into a topological insulator – a material that is an insulator in its interior but is highly conducting on its surface. Realizing a topological insulator in graphene could provide a basis for low-dissipation ballistic electrical circuits or could form the material substrate for topologically protected quantum bits.
