Researchers have achieved new levels of performance for seed-free and substrate-free arrays of nanowires from class of materials called III-V directly on graphene. These compound semiconductors hold particular promise for applications involving light, such as solar cells or lasers.
A new research project led by the University of Southampton is aiming to establish whether germanium, a group IV semiconductor, can be used as the material of choice in mid-infrared (mid-IR) photonics circuits and sensors.
This material, almost ten times stronger than a conventional ceramic, is the result of an innovative manufacturing process that includes a freezing step. This method appears to be compatible with large-scale industrialization and should not be much more expensive than the techniques already in use.
Researchers have demonstrated that vertically aligned carbon nanofibers (VACNFs) can be manufactured using ambient air, making the manufacturing process safer and less expensive. VACNFs hold promise for use in gene-delivery tools, sensors, batteries and other technologies.
Nanoparticles have a great deal of potential in medicine: for diagnostics, as a vehicle for active substances or a tool to kill off tumours using heat. ETH Zurich researchers have now developed particles that are relatively easy to produce and have a wide range of applications.
Scientists have discovered that imperfect nanostructures can offer entirely new functionalities. They have shown that imperfect optical chips can be used to produce 'nanolasers', which is an ultimately compact and energy-efficient light source.