Abstract: An electronic device has a speaker. The speaker has a main body and a cover. The main body has a speaker body and a tube. The tube is situated at a side of the speaker body. The cover is situated above the main body for covering the tube and part of the speaker body, such that the speaker has a covered portion and an uncovered portion. The cover has a hole. The sound produced by the covered portion is output via the tube along a first direction. The sound produced by the uncovered portion is output via the hole along a second direction.

Abstract: A speaker device includes a first cabinet, a speaker unit, a second cabinet and a tube cabinet. The first cabinet is disposed in a casing and with a first chamber formed therein. The speaker unit is disposed in the first chamber. The second cabinet is connected to the casing and with an opening formed on the casing. The second cabinet has a second chamber formed therein and communicating with the opening. The tube cabinet connects the first cabinet and the second cabinet. The tube cabinet has a tube chamber formed therein and communicating with the first chamber and the second chamber. A sound generated by the speaker unit is enhanced in the first chamber, transmitted to the second chamber via the tube chamber and emitted out via the opening.

Abstract: A speaker device includes a resonant cabinet, a speaker unit and an inverted tube. The resonant cabinet is installed inside a device casing. A speaker chamber is defined between the resonant cabinet and the device casing and communicates with a plurality of first outlets formed on the device casing. The speaker unit is disposed inside the speaker chamber and for emitting a sound. A part of the sound is emitted from the plurality of first outlets by a first frequency via the speaker chamber. The inverted tube connects the resonant cabinet and the device casing. An inverted chamber is formed inside the inverted tube and communicates with the speaker chamber. Another part of the sound emits by a second frequency via the speaker chamber and the inverted chamber, wherein a peak value of the second frequency is smaller than a peak value of the first frequency.

Abstract: A method of fabricating fibres of silicon or silicon-based material comprises the steps of etching pillars on a substrate and detaching them. A battery anode can then be created by using the fibres as the active material in a composite anode electrode.

Abstract: A speaker device includes a resonant cabinet, a speaker unit and an inverted tube. The resonant cabinet is installed inside a device casing. A speaker chamber is defined between the resonant cabinet and the device casing and communicates with a plurality of first outlets formed on the device casing. The speaker unit is disposed inside the speaker chamber and for emitting a sound. A part of the sound is emitted from the plurality of first outlets by a first frequency via the speaker chamber. The inverted tube connects the resonant cabinet and the device casing. An inverted chamber is formed inside the inverted tube and communicates with the speaker chamber. Another part of the sound emits by a second frequency via the speaker chamber and the inverted chamber, wherein a peak value of the second frequency is smaller than a peak value of the first frequency.

Abstract: An electronic device is provided which includes a first substrate, a speaker disposed on the first substrate, a second substrate, and a sound conditioner. The sliding groove is formed at the second substrate, and a first sound outlet and a second sound outlet are connected to the sliding groove. The sound conditioner is slidably disposed in the sliding groove between a first position and a second position. With the change of the position of the sound conditioner, sound produced from the speaker is transmitted to the outside via the first sound outlet or the second sound outlet.

Abstract: An earphone device is provided. The earphone device includes a main body and an eartip connected to the main body. The main body includes a chamber and a speaker. The speaker is disposed in the chamber. The eartip includes a communicating tube extending along an axis. A sound inlet and a sound outlet are formed on two ends of the communicating tube that are located at the axis, and a pressure-releasing hole penetrates a side wall of the communicating tube for pressure adjustment.

Abstract: An electrically interconnected mass includes elongated structures. The elongated structures are electrochemically active and at least some of the elongated structures cross over each other to provide intersections and a porous structure. The elongated structures include doped silicon.

Abstract: A speaker and an electronic device having the speaker are disclosed. The speaker has a main body and a cover. The main body has a speaker body and a tube. The tube is situated at a side of the speaker body. The cover is situated above the main body for covering the tube and part of the speaker body such that the speaker has a covered portion and an uncovered portion. The cover has a hole. The sound produced by the covered portion is output via the tube along a first direction. The sound produced by the uncovered portion is output via the hole along a second direction.

Abstract: An electronic device including a casing, a sound cabinet structure and a magnetic element is provided. The casing has an accommodating recess located inside the casing. The sound cabinet structure is located inside the casing and adjacent to the accommodating recess. The sound cabinet structure includes a resonance cavity and a sound output opening. The resonance cavity is communicated with the accommodating recess. The sound output opening penetrates through the casing and is communicated with the resonance cavity. The magnetic element is disposed inside the accommodating recess and adaptable to move in the accommodating recess, so that the casing is adaptable to be connected with an object or remove from the object. A hitting sound generated by the magnetic element while moving in and contacting the accommodating recess passes through and is effected by the sound cabinet structure.

Abstract: An electronic device including a casing, a sound cabinet structure and a magnetic element is provided. The casing has an accommodating recess located inside the casing. The sound cabinet structure is located inside the casing and adjacent to the accommodating recess. The sound cabinet structure includes a resonance cavity and a sound output opening. The resonance cavity is communicated with the accommodating recess. The sound output opening penetrates through the casing and is communicated with the resonance cavity. The magnetic element is disposed inside the accommodating recess and adaptable to move in the accommodating recess, so that the casing is adaptable to be connected with an object or remove from the object. A hitting sound generated by the magnetic element while moving in and contacting the accommodating recess passes through and is effected by the sound cabinet structure.

Abstract: A process for etching silicon to form silicon pillars on the etched surfaces, includes treating silicon with an etching solution that includes 5 to 10M HF 0.01 to 0.1M Ag+ ions and 0.02 to 0.2M NO3? ions. Further, NO3? ions in the form of alkali metal, nitric acid or ammonium nitrate salt is added to maintain the concentration of nitrate ions within the above range. The etched silicon is separated from the solution. The process provides pillars, especially for use as the active anode material in lithium ion batteries. The process is advantageous because it uses an etching bath containing only a small number of ingredients whose concentration needs to be controlled and it can be less expensive to operate than previous processes.

Abstract: Pillared particles of silicon or silicon-comprising material and a method of fabricating the same are disclosed. These particles may be used to create both a composite anode structure with a polymer binder, a conductive additive and a metal foil current collector, and an electrode structure. The structure of the particles overcomes the problems of charge/discharge capacity loss.

Abstract: Pillared particles of silicon or silicon-comprising material and a method of fabricating the same are disclosed. These particles may be used to create both a composite anode structure with a polymer binder, a conductive additive and a metal foil current collector, and an electrode structure. The structure of the particles overcomes the problems of charge/discharge capacity loss.

Abstract: A process of etching silicon includes treating silicon, e.g. granules or bulk material, with an etching solution, including HF, Ag+ ions and nitrate ions thereby etching the silicon to form silicon having etched pillars on its surface, which silicon includes a surface deposit of silver. The etched silicon is then separated from the spent etching solution. The silver from the etched silicon is dissolved using nitric acid to form a solution containing Ag+ ions and nitrate ions. The solution containing Ag+ ions and nitrate ions is mixed with further HF to form a further etching solution. The further etching solution is used to treat further silicon. The pillars may be used as an anode material in a Li-ion battery.

Abstract: Pillared particles of silicon or silicon-comprising material and a method of fabricating the same are disclosed. These particles may be used to create both a composite anode structure with a polymer binder, a conductive additive and a metal foil current collector, and an electrode structure. The structure of the particles overcomes the problems of charge/discharge capacity loss.

Abstract: A method for treating silicon to form pillars, especially for use as the active anode material in Li-ion batteries, is disclosed. The process is simple to operate on a commercial scale since it uses a solution containing only a small number of ingredients whose concentration needs to be controlled and it can be cheaper to operate than previous processes. The solution includes: 0.01 to 5M HF 0.002 to 0.2M of metal ions capable of nucleating on and forming a porous layer comprising regions of elemental metal on the silicon surface; 0.001 to 0.7M of an oxidant selected from the group O2, O3, H2O2, the acid, ammonium or alkali metal salt of NO3?, S2O82?, NO2?, B4O72? and ClO4? or a mixture thereof. The treated silicon is suitably removed from the solution.

Abstract: An electrically interconnected mass includes elongated structures. The elongated structures are electrochemically active and at least some of the elongated structures cross over each other to provide intersections and a porous structure. The elongated structures include doped silicon.

Abstract: An electrically interconnected mass includes elongated structures. The elongated structures are electrochemically active and at least some of the elongated structures cross over each other to provide intersections and a porous structure. The elongated structures include doped silicon.

Abstract: A method is described of selectively etching a silicon substrate in small local areas in order to form columns or pillars in the etched surface. The silicon substrate is held in an etching solution of hydrogen fluoride, a silver salt and an alcohol. The inclusion of the alcohol provides a greater packing density of the silicon columns.