Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for audio messaging interface for messaging platform. One of the methods includes receiving, by a first client on a first user device, a request to record an audio message, wherein the first client is configured to provide a user interface for the platform for a user using the first user device who is logged in to a user account on the platform; recording audio through a microphone of the first user device; generating a platform message by (i) generating a video file that includes the recorded audio as an audio portion of the video file and programmatically generated minimal video content as a video portion of the video file, and (ii) including the video file in the platform message; and posting, by the first client, the platform message to the platform, in response to a post request.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for audio messaging interface for messaging platform. One of the methods includes receiving, by a first client on a first user device, a request to record an audio message, wherein the first client is configured to provide a user interface for the platform for a user using the first user device who is logged in to a user account on the platform; recording audio through a microphone of the first user device; generating a platform message by (i) generating a video file that includes the recorded audio as an audio portion of the video file and programmatically generated minimal video content as a video portion of the video file, and (ii) including the video file in the platform message; and posting, by the first client, the platform message to the platform, in response to a post request.

Abstract: A method for sensing an analyte uses tethered particle motion. A functionalized particle has a first state in which the functionalized particle is bound to the surface and a second state in which the functionalized particle is not bound to the surface, where the functionalized particle switches between the first and second states depending on the presence and absence of the analyte, thereby changing motion characteristics of the functionalized particle depending on the presence of the analyte. A spatial coordinate parameter of the functionalized particle is measured by a detector, and a processor determines the presence/concentration of the analyte from changes in the measured spatial coordinate parameter.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for audio messaging interface for messaging platform. One of the methods includes receiving, by a first client on a first user device, a request to record an audio message, wherein the first client is configured to provide a user interface for the platform for a user using the first user device who is logged in to a user account on the platform; recording audio through a microphone of the first user device; generating a platform message by (i) generating a video file that includes the recorded audio as an audio portion of the video file and programmatically generated minimal video content as a video portion of the video file, and (ii) including the video file in the platform message; and posting, by the first client, the platform message to the platform, in response to a post request.

Abstract: A method for sensing an analyte uses tethered particle motion. A functionalized particle has a first state in which the functionalized particle is bound to the surface and a second state in which the functionalized particle is not bound to the surface, where the functionalized particle switches between the first and second states depending on the presence and absence of the analyte, thereby changing motion characteristics of the functionalized particle depending on the presence of the analyte. A spatial coordinate parameter of the functionalized particle is measured by a detector, and a processor determines the presence/concentration of the analyte from changes in the measured spatial coordinate parameter.

Abstract: A method for sensing an analyte uses tethered particle motion. A functionalized particle [500] has a first state [504] in which the functionalized particle is bound to the surface and a second state [502] in which the functionalized particle is not bound to the surface, where the functionalized particle switches between the first and second states depending on the presence and absence of the analyte, thereby changing motion characteristics of the functionalized particle depending on the presence of the analyte. A spatial coordinate parameter of the functionalized particle is measured by a detector [516], and a processor [518] determines the presence/concentration of the analyte from changes in the measured spatial coordinate parameter.

Abstract: A method for sensing an analyte uses tethered particle motion. A functionalized particle [500] has a first state [504] in which the functionalized particle is bound to the surface and a second state [502] in which the functionalized particle is not bound to the surface, where the functionalized particle switches between the first and second states depending on the presence and absence of the analyte, thereby changing motion characteristics of the functionalized particle depending on the presence of the analyte. A spatial coordinate parameter of the functionalized particle is measured by a detector [516], and a processor [518] determines the presence/concentration of the analyte from changes in the measured spatial coordinate parameter.