Abstract: A radio frequency (RF) weak magnetic field detection sensor includes a ferromagnetic core, a pickup coil disposed to surround the ferromagnetic core, a substrate that includes an opening, a core pad connected to the ferromagnetic core and a coil pad connected to the pickup coil, and an insulating tube interposed between the ferromagnetic core and the pickup coil. The insulating tube includes a bobbin around which the pickup coil is wound, and a core hole formed to pass through the bobbin and configured to accommodate the ferromagnetic core.

Abstract: The present invention provides an optical filter having a narrow bandpass, high transmittance in the bandpass, low transmittance outside the bandpass, little change in optical properties even when the incident angle of light changes and thus, being advantageous in terms of yield and cost per hour. In addition, the present invention may provide a LiDAR system including the optical filter and an application of the optical filter and the LiDAR system.

Abstract: An apparatus and method for transmitting and receiving magnetic field signals in a magnetic field communication system are provided. The apparatus includes a controller configured to generate a communication signal, matching units that are configured to receive the communication signal and that respectively correspond to different matching frequencies, and loop antennas that are connected to the matching units, respectively, and that are configured to convert communication signals according to the different matching frequencies into magnetic transmission signals in the form of magnetic field energy and to transmit the magnetic transmission signals.

Abstract: Disclosed is a self-assembled complex containing a calcium ion that includes a calcium ion; and at least one ligand, where the calcium ion and the ligand participate in a reversibly self-assembly or self-disassembly. The shape of the self-assembled complex varies depending on the type of the ligand, or the mixing ratio of the ligand when there are a plurality of ligands.

Abstract: Disclosed is a self-assembled complex containing an iron ion that includes an iron ion; and at least one ligand, where the iron ion and the ligand are reversibly self-assembled or self-disassembled. The iron ion and the ligand are self-assembled to form an assembly structure at least part of which is round shaped.

Abstract: Disclosed is a self-assembled complex containing copper ions, including: copper ions; and one or more ligands, in which the ligands and the copper ions are reversibly self-assembled or self-degraded, and when there are a plurality of types of ligands or a plurality of ligands, the shape of the self-assembled complex is formed differently depending on the blending ratio of the ligands.

Abstract: An electronic device is provided. The electronic device includes a camera module, a memory configured to store reference composition information, and a camera control module configured to collect real-time composition information through the camera module. The camera control module compares the stored reference composition information and the real-time composition information to indicate to a user whether the stored reference composition information and the real-time composition information are consistent with each other.

Abstract: An electronic device is provided. The electronic device includes a camera module, a memory configured to store reference composition information, and a camera control module configured to collect real-time composition information through the camera module. The camera control module compares the stored reference composition information and the real-time composition information to indicate to a user whether the stored reference composition information and the real-time composition information are consistent with each other.