Abstract:
Provided is a method for manufacturing a silicon nanowire array comprising the steps of: positioning plastic particles separated apart from one another in a uniform random pattern on a silicon substrate; forming a catalyst layer between the plastic particles; removing the plastic particles; vertically etching portions of the silicon substrate that contact the catalyst layer; and removing the catalyst layer. The present invention provides a simple and cost-effective process, enables mass-production through large surface area processing, enables the manufacture of nanowire even at a site having limited resources, and enables the structures of nanowire to be individually controlled.
Abstract:
The present disclosure relates to a method for three-dimensional imaging, including introducing upconverting nanoparticles into a sample, illuminating near-infrared laser such that upconverting nanoparticles introduced into a sample is excited, detecting a visible ray emitted from the excited upconverting nanoparticles and capturing and acquiring two-dimensional images by scanning the sample in a depth direction of the sample, and generating a three-dimensional image of the sample using the two-dimensional images.
Abstract:
Disclosed are a touch sensor and a method of fabricating the same. An insulator of the touch sensor contains a polymer and has an array of vertically aligned nanowires structure. Therefore, the touch sensor can be easily changed in thickness, which facilitates change in electrostatic capacity, thereby increasing sensitivity of the touch sensor. In addition, the present invention can simplify an existing complicated process of fabricating a touch sensor.
Abstract:
Disclosed herein is an aptamer sensor including a substrate having metal nanoparticles formed thereon, an aptamer attached to surfaces of the metal nanoparticles to form a structure by selectively reacting with a target material to be detected, and an intercalating agent inserted between the aptamer and the target material in reaction of the aptamer with the target material to increase shift of an absorption spectrum due to local surface plasmon resonance sensor through aggregation toward the metal nanoparticles
Abstract:
A sediment microbial fuel cell is provided. More specifically, the present invention provides a sediment microbial fuel cell characterized by comprising: an oxide electrode unit located within the sediment of polluted water; a reduction electrode unit located adjacent to the water surface within the water; and a solid matter separator unit arranged inside the sediment and located in an upper part of the oxide electrode unit spaced apart from the oxide electrode unit, wherein one or more surfaces of the oxide electrode unit are exposed in the separation space formed by the solid matter separator unit.
Abstract:
An aptamer for specifically detecting patulin and a method for detecting patulin using the same. The aptamer for specifically detecting patulin is a single-stranded DNA aptamer serving as a bioreceptor capable of effectively detecting patulin. Since such an aptamer for specifically detecting patulin is capable of specifically binding to patulin which is a mycotoxin having a simple chemical structure and a low molecular weight, it can be effectively employed as a bioreceptor in various bioassays for specifically detecting patulin. The aptamer for specifically detecting patulin can achieve more effective detection of patulin in apples or apple juice.
Abstract:
Disclosed herein is a method of enhancing speech. The method includes calculating a far-end speech spectrum by performing fast Fourier transformation of a signal received by a far-end user, calculating a background noise spectrum collected by a microphone provided to a mobile device of a near-end user; calculating a gain from the far-end speech spectrum and the background noise spectrum using a speech intelligibility index-based module, and deriving an enhanced far-end speech spectrum by applying the gain to the far-end speech spectrum, wherein, in calculating a gain using a speech intelligibility index-based module, a power budget used for transmitting and receiving a speech signal is set to vary with the background noise spectrum.
Abstract:
An apparatus for measuring electrical properties of a biological sample. The apparatus includes: a first channel through which a biological sample flows; a second channel formed above or below the first channel; and a plurality of electrodes adjoining the first channel and measuring electrical properties of the biological sample.
Abstract:
Disclosed herein is an optical fiber laser device including a seed unit for providing at least two seed lights having different wavelengths; and an amplifying unit for amplifying the at least two seed lights. The amplifying unit includes: a preamplifying unit for amplifying the at least two seed lights by using excitation light of which the wavelength is shorter than the wavelengths of the seed lights; and a final amplifying unit to which no separate excitation light source is provided. The final amplifying unit amplifies the seed light having the longest wavelength by using the other seed light as excitation light with respect to the seed light having the longest wavelength among the at least two seed light.
Abstract:
An apparatus and method for detecting the location of a moving body. The apparatus may include a speaker configured to intermittently generate a pulse signal to a detection space and a microphone array configured to obtain a reflected sound of the pulse signal that is generated in the detection space. The location of a moving body is estimated by extracting a change of a sound field from the reflected sound. The present invention can be applied to an apparatus for detecting a moving body without any side effect because the location of a moving body can be accurately detected up to an angle and distance. Furthermore, the present invention can be applied to various application apparatuses, such as a lighting apparatus, an air conditioning apparatus, a security apparatus, and a parking lot management apparatus because there is no problem in health and there is no side effect in application.