摘要:
Provided are a low-voltage noise preventing circuit using an abrupt metal-insulator transition (MIT) device which can effectively remove a noise signal with a voltage less than a rated signal voltage. The abrupt MIT device is serially connected to the electrical and/or electronic system to be protected from the noise signal, and is subject to abrupt MIT at a predetermined voltage. Accordingly, low-voltage noise can be effectively removed.
摘要:
Provided is a lithium secondary battery including a discharge unit capable of delaying or preventing a battery explosion. The lithium secondary battery includes a discharge unit disposed parallel to a battery body. The discharge unit includes a first electrode connected to a positive electrode of the battery body, a second electrode connected to a negative electrode of the battery body, and a discharge material film, disposed between the first electrode and the second electrode, inducing a abrupt discharge above a predetermined temperature. The discharge material film, e.g., a abrupt metal-insulator transition (MIT) material film can induce a abrupt discharge, thereby preventing or delaying a battery explosion.
摘要:
Provided are a low-voltage noise preventing circuit using an abrupt metal-insulator transition (MIT) device which can effectively remove a noise signal with a voltage less than a rated signal voltage. The abrupt MIT device is serially connected to the electrical and/or electronic system to be protected from the noise signal, and is subject to abrupt MIT at a predetermined voltage. Accordingly, low-voltage noise can be effectively removed.
摘要:
Provided is a lithium secondary battery including a discharge unit capable of delaying or preventing a battery explosion. The lithium secondary battery includes a discharge unit disposed parallel to a battery body. The discharge unit includes a first electrode connected to a positive electrode of the battery body, a second electrode connected to a negative electrode of the battery body, and a discharge material film, disposed between the first electrode and the second electrode, inducing a abrupt discharge above a predetermined temperature. The discharge material film, e.g., a abrupt metal-insulator transition (MIT) material film can induce a abrupt discharge, thereby preventing or delaying a battery explosion.
摘要:
Provided are an electrical and/or electronic system protecting circuit using an abrupt metal-insulator transition (MIT) device which can effectively remove high-frequency noise with a voltage greater than a rated standard voltage received via a power line or a signal line of an electrical and/or electronic system, and the electrical and/or electronic system including the electrical and/or electronic system protecting circuit. The abrupt MIT device of the electrical and/or electronic system protecting circuit abrupt is connected in parallel to the electrical and/or electronic system to be protected from the noise. The electrical and/or electronic system protecting circuit bypasses toward the abrupt MIT device most of the noise current generated when the voltage greater than the rated standard voltage is applied, thereby protecting the electrical and/or electronic system.
摘要:
Provided is a semiconductor and a method for forming the same. The method includes forming a buried insulating layer locally in a substrate. The substrate is etched to form an opening exposing the buried insulating layer, and a silicon pattern spaced in at least one direction from the substrate is formed on the buried insulating layer. A first insulating layer is formed to enclose the silicon pattern.
摘要:
Provided is a method of forming optical waveguide. The method includes forming a trench on a semiconductor substrate to define an active portion, and partially oxidizing the active portion. An non-oxidized portion of the active portion is included in a core through which an optical signal passes, and an oxidized portion of the active portion is included in a cladding.
摘要:
A waveguide structure is provided. The waveguide structure includes: a slot channel waveguide including first and second patterns, which are spaced apart from each other to define a slot; a first upper layer covering at least a portion of the slot channel waveguide; and a second upper layer covering the remaining portion of the slot channel waveguide. A thermo-optic coefficient (TOC) of the channel waveguide times a TOC of the second upper layer is a negative number.
摘要:
Provided are a gas sensing apparatus and a gas sensing method using the apparatus. The gas sensing apparatus includes a detection chamber, a light source, a light sensor, a gas source, and a controller. The light source is disposed at one end of the detection chamber, and a light sensor is disposed at the other end of the detection chamber. The gas source provides gas to the detection chamber. The controller controls the light source and the light sensor. The light source includes a laser supplying laser light, and a light scanner reflecting and scanning the laser light in the detection chamber. The controller includes a phase sensitive detector electrically connected to the light sensor.
摘要:
Provided is a hybrid laser diode. The hybrid laser diode includes: a silicon layer constituting a slab waveguide; and a compound semiconductor layer disposed on the silicon layer to constitute a channel waveguide.