Abstract: In an embodiment a method for producing a growth substrate includes providing a substrate with a main surface, arranging a layer sequence on the main surface of the substrate, wherein the layer sequence comprises at least one semiconductor layer comprising a III-V compound semiconductor material, and annealing the layer sequence on the substrate, wherein the layer sequence comprises at least one intermediate layer and/or wherein a cover layer is arranged on the layer sequence, wherein a temperature during annealing is at least 1400° C., wherein the intermediate layer comprises a material selected from the following group: carbides, nitrides, oxides, oxynitrides, wherein the nitrides are nitrides of silicon, titanium, tantalum, yttrium, hafnium, scandium, tungsten, or zirconium, and wherein the cover layer comprises one of the following materials: tungsten nitride, aluminum carbonitride, molybdenum, tungsten, titanium, tantalum, hafnium, aluminum, titanium tungsten, graphite, or a photoresist.

Abstract: The present disclosure provides a method and a device for an activation of brain regions. The method comprises attaching a first active electrode to a first leg of a person in the back of the knee area in an expected location of a peroneal nerve of the first leg and attaching a grounding electrode to the person. Generating electrical pulses by a pulse generator connected to the first active electrode and the grounding electrode. Stimulating by the first active electrodes the peroneal nerve of the first leg, activating the brain regions via the stimulation and controlling via a control unit a flow of the generated pulses to the first electrode.

Abstract: The present disclosure provides a neuromodulation method for treating neurodegenerative disease. The neuromodulation method comprises attaching a first active electrode to a patient's leg in the back of the knee area in an expected location of a peroneal nerve of the first leg and attaching a grounding electrode to the patient's body. Generating electrical pulses by a pulse generator connected to the first active electrode and the grounding electrode. Stimulating by the first active electrodes the peroneal nerve of the first leg and controlling via a control unit a flow of the generated pulses to the first electrode.

Abstract: The present disclosure provides a neuromodulation method for treating neurodegenerative disease. The neuromodulation method comprises attaching a first active electrode to a patient's leg in the back of the knee area in an expected location of a peroneal nerve of the first leg and attaching a grounding electrode to the patient's body. Generating electrical pulses by a pulse generator connected to the first active electrode and the grounding electrode. Stimulating by the first active electrodes the peroneal nerve of the first leg and controlling via a control unit a flow of the generated pulses to the first electrode.

Abstract: An example of an apparatus is provided. The apparatus includes a container to store a powder. The apparatus includes a flow generator to move a gas to the container. The flow generator is to move the gas at a first velocity and a second velocity, the first velocity to fluidize the powder in a fluidized state, and the second velocity to pass through stationary powder in a powder pack. The apparatus includes pressure sensors to measure pressures in the container. The apparatus includes a measurement engine in communication with the pressure sensors, wherein the measurement engine is to calculate a mass of the powder based on a fluidized pressure differential and based on a pack pressure differential.