No abstract

In conventional acoustic levitation, the specimens to be levitated are limited to very light ones of a few milligrams to a few tens of milligrams. The authors have learned that specimens with a weight of several kilograms can be levitated stably by direct sound radiation pressure. The specimen material is not important. The requirement is only that the surface of the specimen exposed to the sound wave must be flat. The fundamental characteristics of near-field levitation were experimentally studied with the use of a flexural vibration plate. The following results were obtained: (1) The size of levitation specimen should be longer than 3/2 wavelength of the flexural vibration in order to levitate stably. (2) The relationship between the levitation distance and the mass per unit area is proportion to −1/2 power. (3) The levitation distance is proportional to the displacement amplitude. This phenomenon can be used in noncontact transportation of planar objects such as Si wafer and glass plates.

Near-field acoustic levitation is successfully applied to transport objects without contact. Planar objects having a weight greater than 10 kgf can be stably levitated near a vibrating plate. An experimental apparatus has been fabricated to measure the transportation speed and transient characteristics.

The non-canonical Hh inhibitor GANT61 decreased not only cell growth, but also the CSC population in TNBC cells. GANT61 enhanced the anti-cell growth activity of paclitaxel in these cells. These results suggest for the first time that GANT61 has potential as a therapeutic agent in the treatment of patients with TNBC.

No abstract