ACOUSTICALLY ACTIVE NANO-STRUCTURED METAL OXIDES

• Main Authors: AKSIT MAHMUT, STOLZENBURG FABIAN
• Format: Patent
• Language: Chinese; English
• Published: 18.02.2020
• Subjects: CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; DEAF-AID SETS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; INORGANIC CHEMISTRY; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS; METALLURGY; PUBLIC ADDRESS SYSTEMS

Acoustically active articles having a composition including a nano-structured metal oxide are provided. The nano-structured metal oxide has the formula M1xM2yOz, where M1 is selected from the group consisting of alkali metals, alkaline earth metals, and combinations thereof, M2 is a transition metal or post-transition metal, and M2 has an atomic number no greater than 78. The articles can lower aresonant frequency of a cavity by no less than 50 Hz when the cavity is filled with the article and the resonant frequency is in a range from about 50 Hz to about 1500 Hz. 本发明提供了具有组合物的声学活性制品，所述组合物包含纳米结构化金属氧化物。纳米结构化金属氧化物具有式M1xM2yOz，其中M1选自碱金属、碱土金属以及它们的组合，M2为过渡金属或后过渡金属，并且M2具有不大于78的原子数。当腔体填充有制品并且谐振频率在约50Hz至约1500Hz的范围内时，制品可将腔体的谐振频率降低不小于50Hz。