Abstract: A structured-light-velocimetry method includes extracting one or more bursts from a time-varying signal generated by detecting scattered light from a tracer particle passing through a structured optical beam; fitting each of the one or more bursts to a multi-variable model to extract a plurality of fitted parameters; and executing a machine-learning model with the plurality of fitted parameters to predict an angular velocity of the tracer particle.

Abstract: In some aspects, a device comprises a plurality of walls defining a slot and one or more channels wherein the one or more channels are intersected by the slot; wherein the one or more channels have a cross-section in a plane perpendicular to a vertical axis of the device that changes along the vertical axis; and one or more floats sized to allow movement of the one or more floats within said one or more channels, wherein the one or more floats have a surface characteristic that is different from the surface characteristic of the walls such that, upon contact with a fluid, said walls and said floats form different contact angles and induce a repulsive capillary force between the walls and the one or more floats at a surface of the fluid; and wherein the slot has a width that is smaller than the width of the one or more channels such that the one or more floats are prevented from moving between the one or more channels.

Abstract: A method is disclosed for analyzing the secondary structure of a nucleic acid using a patch oligonucleotide and a probe oligonucleotide.

Abstract: Disclosed herein are sport and game simulation systems, and methods of use thereof. One exemplary method is performed at an electronic device and includes: identifying a current topography of a putting green and a current position of a first user's ball on the putting green. The method also includes: determining, based on the current topography, a best path from the current position of the first user's ball to a target on the putting green. The method additionally includes: sending, to a projecting device that is distinct from the electronic device, instructions to render a representation of the best path on the putting green. In some embodiments, the method further includes: determining a backswing distance and/or speed and a corresponding follow-through distance and/or speed that allows the first user to hit the ball along the best path and providing instructions to render the backswing and follow-through distances on the putting green.

Abstract: Disclosed herein are sport and game simulation systems, and methods of use thereof. One exemplary method is performed at an electronic device and includes: identifying a current topography of a putting green and a current position of a first user's ball on the putting green. The method also includes: determining, based on the current topography, a best path from the current position of the first user's ball to a target on the putting green. The method additionally includes: sending, to a projecting device that is distinct from the electronic device, instructions to render a representation of the best path on the putting green. In some embodiments, the method further includes: determining a backswing distance and/or speed and a corresponding follow-through distance and/or speed that allows the first user to hit the ball along the best path and providing instructions to render the backswing and follow-through distances on the putting green.

Abstract: A bistable structure provided by the invention is characterized as including a deflection element that has mechanically constrained end points and a compliant span between the end points that is substantially free to deflect between two stable positions when a force is applied at a point along the span. The deflection element span is provided, as-fabricated, curved in one of the two stable positions and in a mechanically unstressed condition along the length of the span. The as-fabricated curve of the deflection element span includes a curve maxima at a point along the span length that is at least about ¼ of the span length from the end points of the span. The deflection element span is constrained to substantially prohibit development of a second bending mode that is characteristic for the span as the element deflects between the two stable positions.

Abstract: A bistable structure provided by the invention is characterized as including a deflection element that has mechanically constrained end points and a compliant span between the end points that is substantially free to deflect between two stable positions when a force is applied at a point along the span. The deflection element span is provided, as-fabricated, curved in one of the two stable positions and in a mechanically unstressed condition along the length of the span. The as-fabricated curve of the deflection element span includes a curve maxima at a point along the span length that is at least about ¼ of the span length from the end points of the span. The deflection element span is constrained to substantially prohibit development of a second bending mode that is characteristic for the span as the element deflects between the two stable positions.