A new exploration method for mobile robots is especially suitable for home and office environments. The robot also provides a flexible cleaning system, allowing adaptation to any kind of floor surface with any kind of obstacle and avoiding unnecessary repeat cleaning of the same area.<br><br> Self-localisation means that the method does not require a precise global map, nor does it rely on external markers located in the rooms or areas to be cleaned. Instead, the robot creates its own rough map by scanning the environment, so that the map comprises every obstacle which the robot can then avoid. Iterative scanning allows adaptation to arbitrary obstacles.<br><br> At each cleaning the surrounding area is scanned and simultaneously cleaned using an extendible arm with changeable cleaning elements. This new approach allows the robot to clean any floor space fast and thoroughly, while using little power. <br><br> By using standard microcontrollers the cost of robotic vacuum cleaners is affordable for personal use, as demonstrated by a fully-functional prototype. <br>
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Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.
Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...
An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...
In the race to produce a quantum computer, a number of projects are seeking a way to create quantum bits -- or qubits -- that are stable, meaning they are not much affected by changes in their environment. This normally needs highly nonlinear non-dissipative elements capable of functioning at very low temperatures.
In pursuit of this goal, researchers at EPFL's Laboratory of Photonics and Quantum Measurements LPQM (STI/SB), have investigated a nonlinear graphene-based...
Dental plaque and the viscous brown slime in drainpipes are two familiar examples of bacterial biofilms. Removing such bacterial depositions from surfaces is...
For the first time, scientists have succeeded in studying the strength of hydrogen bonds in a single molecule using an atomic force microscope. Researchers from the University of Basel’s Swiss Nanoscience Institute network have reported the results in the journal Science Advances.
Hydrogen is the most common element in the universe and is an integral part of almost all organic compounds. Molecules and sections of macromolecules are...
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