Abstract: A plasma treatment apparatus, comprising a housing defining a void (13); a source of ionised gas plasma (14) in communication with the void; and agitation apparatus (12) arranged to agitate contents of the void. The plasma can typically be generated at ambient pressure from the ambient air in the void. The apparatus can be used, in particular, for the treatment of materials comprising many small components, such as seeds, granular material, plastic beads and the like.

Abstract: There is provided a small-sized portable microwave plasma generator capable of generating plasma at atmospheric pressure with low electric power including a coaxial cable, an outer conductor, a connection conductor, and a connection member. The coaxial cable includes a first inner conductor and a dielectric material encircling the first inner conductor. The outer conductor encircles the coaxial cable. The connection conductor includes at least one gas inlet tube. The connection conductor electrically connects between the first inner conductor and the outer conductor at one end of the coaxial cable. The connection member includes a second inner conductor passing through the outer conductor and then connecting to the first inner conductor.

Abstract: There is provided a small-sized portable microwave plasma generator capable of generating plasma at atmospheric pressure with low electric power including a coaxial cable, an outer conductor, a connection conductor, and a connection member. The coaxial cable includes a first inner conductor and a dielectric material encircling the first inner conductor. The outer conductor encircles the coaxial cable. The connection conductor includes at least one gas inlet tube. The connection conductor electrically connects between the first inner conductor and the outer conductor at one end of the coaxial cable. The connection member includes a second inner conductor passing through the outer conductor and then connecting to the first inner conductor.

Abstract: A low power plasma generator is provided which can be fabricated in micro-miniature size and which is capable of efficient portable operation. The plasma generator comprises a microwave stripline high Q resonant ring, which may be circular or non-circular, disposed on a dielectric substrate and having a discharge gap in the plane of the substrate. The resonant ring is one-half wavelength in circumference at the operating frequency and is matched to the impedance of the microwave power supply. The voltages at the resonator ends at the gap are 180° out of phase and create an intense electric field in the gap, and a resultant discharge across the gap. The discharge is non-thermal and operates near room temperature and has an intense optical emission. The generator is well suited for low power portable and other applications and can be readily fabricated by known microcircuit techniques. Alternatively, the gap of the resonant ring can extend through the substrate and in which the discharge is formed.

Abstract: A low power plasma generator is provided which can be fabricated in micro-miniature size and which is capable of efficient portable operation. The plasma generator comprises a microwave stripline high Q resonant ring, which may be circular or non-circular, disposed on a dielectric substrate and having a discharge gap in the plane of the substrate. The resonant ring is one-half wavelength in circumference at the operating frequency and is matched to the impedance of the microwave power supply. The voltages at the resonator ends at the gap are 180° out of phase and create an intense electric field in the gap, and a resultant discharge across the gap. The discharge is non-thermal and operates near room temperature and has an intense optical emission. The generator is well suited for low power portable and other applications and can be readily fabricated by known microcircuit techniques. Alternatively, the gap of the resonant ring can extend through the substrate and in which the discharge is formed.