Abstract: Described herein are contactless acoustofluidic agitators and devices and systems thereof. In some embodiments, the acoustofluidic agitators and devices and/or systems thereof are configured as a microscale chip device. Also described herein are methods of using the acoustofluidic agitators and devices and/or systems thereof for manipulation of various cells, particles and/or other materials present in a liquid sample.

Abstract: The present invention relates to a microfluidic device for denudation of a cumulus oocyte complex. The device includes a substrate. A first channel having a width of about 200 ?m to about 1 mm is located within the substrate. The first channel extends from a first end to a second end of the substrate. The first channel has a one or more ridge elements located along a surface thereof. A first port is located in the substrate and in fluid communication with the first end of the channel. A second port is located in the substrate and in fluid communication with the second end of the channel. Systems and methods of use of the microfluidic device for denudation of a cumulus oocyte complex are also disclosed.

Abstract: The disclosure describes a method of reducing or preventing the growth of microbes on the surface of an object, wherein the object is of such material that it can act as a working electrode. The method comprises the steps of providing a counter electrode, and a reference electrode. The object is used as the working electrode. A first electrical current is passed through the working and counter electrodes. The first current through the counter electrode is varied such that a first electric potential of the working electrode is constant relative to the electric potential of the reference electrode. In some embodiments, a second electrical current is passed through the counter electrode such that a second electric potential of the working electrode is constant relative to the electric potential of the reference electrode.

Abstract: The disclosure describes a method of reducing or preventing the growth of microbes on the surface of an object, wherein the object is of such material that it can act as a working electrode. The method comprises the steps of providing a counter electrode, and a reference electrode. The object is used as the working electrode. A first electrical current is passed through the working and counter electrodes. The first current through the counter electrode is varied such that a first electric potential of the working electrode is constant relative to the electric potential of the reference electrode. In some embodiments, a second electrical current is passed through the counter electrode such that a second electric potential of the working electrode is constant relative to the electric potential of the reference electrode.