Nano-imprinting method and nano-imprinting device
An embodiment of this disclosure provides a nano-imprinting method, including: applying an imprinting adhesive on a to-be-processed layer of a substrate located in an imprinting chamber; charging the imprinting chamber with a preset gas at a temperature higher than a boiling point of the preset gas, and pressing a nano-imprinting template on the imprinting adhesive; reducing an ambient temperature of the imprinting chamber to a temperature lower than the boiling point of the preset gas and maintaining the temperature for a preset time, such that the preset gas becomes a liquid; irradiating ultraviolet light from a side of the nano-imprinting template away from the imprinting adhesive to cure the imprinting adhesive; raising the ambient temperature of the imprinting chamber to be higher than the boiling point of the preset gas, such that the liquefied preset gas turns back into a gas; and demolding the nano-imprinting template from the imprinting adhesive.
1. A nano-imprinting method, comprising:
applying an imprinting adhesive on a to-be-processed layer of a substrate located in an imprinting chamber;
charging the imprinting chamber with a preset gas at a temperature higher than a boiling point of the preset gas, and pressing a nano-imprinting template on the imprinting adhesive;
reducing an ambient temperature of the imprinting chamber to a temperature lower than the boiling point of the preset gas and maintaining the temperature for a preset time, such that the preset gas becomes a liquid;
irradiating the imprinting adhesive with ultraviolet light from a side of the nano-imprinting template away from the imprinting adhesive to cure the imprinting adhesive; and
demolding the nano-imprinting template from the imprinting adhesive;
wherein the preset gas is selected from the group consisting of cyclobutane, neopentane, acetaldehyde, and diethyl ether.
2. The nano-imprinting method of claim 1 , wherein after the imprinting adhesive has been cured and before demolding the nano-imprinting template from the imprinting adhesive, the method further comprises:
raising the ambient temperature of the imprinting chamber to a temperature higher than the boiling point of the preset gas and maintaining the temperature for a preset time, such that the liquefied preset gas turns back into a gas.
3. The nano-imprinting method of claim 1 , wherein the preset time is 10 min to 30 min.
4. The nano-imprinting method of claim 3 , wherein the preset time is 15 min to 25 min.
5. The nano-imprinting method of claim 1 , wherein when the nano-imprinting template is pressed on the imprinting adhesive, the imprinting adhesive is not completely removed to prevent the nano-imprinting template from being in direct contact with the to-be-processed layer.