Abstract: A quantum dot including a core comprising a first semiconductor nanocrystal including a zinc chalcogenide and a semiconductor nanocrystal shell disposed on the surface of the core and comprising zinc, selenium, and sulfur. The quantum dot does not comprise cadmium, emits blue light, and may exhibit a digital diffraction pattern obtained by a Fast Fourier Transform of a transmission electron microscopic image including a (100) facet of a zinc blende structure. In an X-ray diffraction spectrum of the quantum dot, a ratio of a defect peak area with respect to a peak area of a zinc blende crystal structure is less than about 0.8:1. A method of producing the quantum dot, and an electroluminescent device including the quantum dot are also disclosed.

Abstract: A quantum dot including a core that includes a first semiconductor nanocrystal including zinc and selenium, and optionally sulfur and/or tellurium, and a shell that includes a second semiconductor nanocrystal including zinc, and at least one of sulfur or selenium is disclosed. The quantum dot has an average particle diameter of greater than or equal to about 13 nm, an emission peak wavelength in a range of about 440 nm to about 470 nm, and a full width at half maximum (FWHM) of an emission wavelength of less than about 25 nm. A method for preparing the quantum dot, a quantum dot-polymer composite including the quantum dot, and an electronic device including the quantum dot is also disclosed.

Abstract: A compound with enhanced etching resistance, gap-filling properties, and heat resistance includes a repeating unit represented by Formula 1.

Abstract: An electronic device and method thereof for selecting a mic by detecting voice signal strengths at respective microphones. The electronic device has first and second mics and is communicatively connected to a headset having a third mic. Voice signal strengths received at the respective first, second, and third mics are detected. A determination is made as to which one of the first, second, and third mics detects the greatest voice signal strength. All of the mics are disabled for communication except for the mic detecting the greatest voice signal strength.

Abstract: Disclosed are an electric dust collector apparatus in an electrostatic precipitator system and a method for electrostatic precipitation thereby. The electric dust collector apparatus includes a flow liquid dust collector part collecting charged dust in a liquid flowing to its one side surface, and a counter unit located opposite to the flow liquid dust collector part and including a metal plate charged with the same polarity with the charged dust to guide the induced charged dust to flow toward the flow liquid dust collector part, wherein the counter unit further includes a coating including an insulating material coating the metal plate.

Abstract: An apparatus and method for operating a connector of a mobile terminal are provided. The apparatus includes a connector including a plurality of pins, a plug of a peripheral device, a display unit for displaying a menu for setting a connector mode, an input unit for receiving selection of one connector mode from the menu for setting a connector mode, a main processor for connecting with a switch unit through a data line, a sound line, a microphone line, and a control line, for receiving connector mode selection information from the input unit, and for transferring switching information through the control line, and the switch unit for connecting with a subset of the pins of the connector, and selectively connecting the subset of the pins to at least one of the data line, the sound line, and the microphone line.

Abstract: Disclosed are an electric dust collector apparatus in an electrostatic precipitator system and a method for electrostatic precipitation thereby. The electric dust collector apparatus includes a flow liquid dust collector part collecting charged dust in a liquid flowing to its one side surface, and a counter unit located opposite to the flow liquid dust collector part and including a metal plate charged with the same polarity with the charged dust to guide the induced charged dust to flow toward the flow liquid dust collector part, wherein the counter unit further includes a coating including an insulating material coating the metal plate.

Abstract: An electronic device and method thereof for selecting a mic by detecting voice signal strengths at respective microphones. The electronic device has first and second mics and is communicatively connected to a headset having a third mic. Voice signal strengths received at the respective first, second, and third mics are detected. A determination is made as to which one of the first, second, and third mics detects the greatest voice signal strength. All of the mics are disabled for communication except for the mic detecting the greatest voice signal strength.

Abstract: An apparatus and method for operating a connector of a mobile terminal are provided. The apparatus includes a connector including a plurality of pins, a plug of a peripheral device, a display unit for displaying a menu for setting a connector mode, an input unit for receiving selection of one connector mode from the menu for setting a connector mode, a main processor for connecting with a switch unit through a data line, a sound line, a microphone line, and a control line, for receiving connector mode selection information from the input unit, and for transferring switching information through the control line, and the switch unit for connecting with a subset of the pins of the connector, and selectively connecting the subset of the pins to at least one of the data line, the sound line, and the microphone line.