Abstract: Provided is a radiative cooling substrate, sequentially composed of a broadband radiation absorption layer, a metal substrate, and a wavelength-selective infrared emission layer. Also provided is a method for preparing the aforementioned radiative cooling substrate, which simply involves placing the metal substrate into an electrophoresis tank and depositing the broadband radiation absorption layer and the wavelength-selective infrared emission layer on the two sides of the metal substrate, respectively. Additionally, a radiative cooling device, comprising the above-mentioned radiative cooling substrate, is also provided.

Abstract: Provided is a method of fabricating an electronic circuit including providing a copper ion solution. The copper ion solution includes a source of copper (II) ions, L-ascorbic acid, and water. The copper ion solution is applied on a substrate to form a coating layer. A heat source is provided to locally heat the coating layer to react copper ions in the coating layer to form copper conductive patterns.

Abstract: A method for detecting an undesired connection forming a short circuit on a printed circuit board (PCB) based on an original image of the PCB includes steps of: performing binarization on the original image to generate a binary image that has an external boundary; determining, on the binary image, a trace area that corresponds to a trace of the PCB; determining whether the trace area contacts the external boundary of the binary image at four places; and determining that the trace that corresponds to the trace area has an undesired connection forming a short circuit when it is determined that the trace area contacts the external boundary of the binary image at four places.

Abstract: A radiative cooling substrate and a manufacturing method of the radiative cooling substrate are provided. The radiative cooling substrate includes a metallic substrate and a chitosan layer disposed on the metallic substrate with a thickness of 0.5 ?m to 10 ?m. The chitosan layer emits radiation within a waveband between 8 ?m and 13 ?m.

Abstract: A radiative cooling substrate and a manufacturing method of the radiative cooling substrate are provided. The radiative cooling substrate includes a metallic substrate and a chitosan layer disposed on the metallic substrate with a thickness of 0.5 ?m to 10 ?m. The chitosan layer emits radiation within a waveband between 8 ?m and 13 ?m.

Abstract: A container with functions of temperature indication and thermal storage is provided. The container includes: an inner bottle containing a liquid, a thermochromic and thermal storage material layer disposed on the outer side of the inner bottle, and a first polymer layer disposed on the outer side of the thermochromic and thermal storage material layer. The thermochromic and thermal storage material layer comprises a thermal storage material and a thermochromic material. The thermal storage material is adapted to undergo a phase change for absorption or release of thermal energy. The thermochromic material is mixed in the thermal storage material and having at least two color changes depending on a temperature change. Wherein, the first polymer layer includes a wavelength-selective polymer, and the thermochromic and thermal storage material layer absorbs light passing through the first polymer layer.

Abstract: An energy-saving glass includes a glass substrate, and a periodic metal layer deposited on the glass substrate and having a honeycomb array of round holes. A method of manufacturing the energy-saving glass includes: providing a template having multiple template spots arranged in a honeycomb array; forming on the template a transfer metal layer having multiple metal spots disposed respectively on the template spots; transferring the metal spots onto a photoresist layer on a glass substrate; etching the photoresist layer exposed from the metal spots to leave photoresist spots underlying the metal spots on the glass substrate; forming a periodic metal layer around the photoresist spots; and removing the photoresist spots.

Abstract: An energy-saving glass includes a glass substrate, and a periodic metal layer deposited on the glass substrate and having a honeycomb array of round holes. A method of manufacturing the energy-saving glass includes: providing a template having multiple template spots arranged in a honeycomb array; forming on the template a transfer metal layer having multiple metal spots disposed respectively on the template spots; transferring the metal spots onto a photoresist layer on a glass substrate; etching the photoresist layer exposed from the metal spots to leave photoresist spots underlying the metal spots on the glass substrate; forming a periodic metal layer around the photoresist spots; and removing the photoresist spots.

Abstract: A communication device. The device includes a memory storing original time difference data and a time difference database having a reserve of communication data and localized time difference data respectively corresponding to the communication data. The communication device is characterized in that when the communication device executes communication according to a communication code with the communication data, the communication device retrieves localized time difference information corresponding to the communication data from the time difference database and obtains the recipient's local time data according to the original time difference data and the corresponding localized time difference data.

Abstract: A process for performing arithmetic operations and engineering based arithmetic operations in a mobile phone comprises the steps of storing an arithmetic operation software and an engineering based arithmetic operation software in a memory of the mobile phone, selecting one of the software, showing an input interface on a display of the mobile phone in response to the selection, inputting operands and operator for performing a calculation thereon, and showing a result of the calculation on the display. Also, the arithmetic operation software comprises an input interface in response to a pressed button on a keypad of the mobile phone such that user may input operands and operator by pressing the corresponding buttons based on the location of the operator in the input interface.

Abstract: A method of automatically providing the country code and area of a phone number by selecting the city applying to programmed screen phones, mobile phones, personal digital assistants and communication devices with the dialing function. The disclosed method includes the steps of: establishing a database with the country code and area code of cities of all countries; sorting and numbering the cities to generate a look-up table; entering the city of the phone number to dial and comparing the selected city and the look-up table to generate the corresponding country code and area code of the city; and entering the country code, the area code and the phone number.