Abstract: Disclosed is the invention of a pump dispenser wherein a deformation prevention locking part induces a chaplet to move in the axial direction in a housing at the time of rotation of a head part, thereby allowing or restricting an operation of pressing a head part while preventing the deforming of an elastic member.

Abstract: The present disclosure relates to a standalone precursor for synthesizing nanomaterials, which is capable of effectively mass-producing nanomaterials, and an apparatus for synthesizing nanomaterials using the same.

Abstract: According to an embodiment of the present disclosure, mass production is possible and production time may be reduced, thus increasing yield. Furthermore, a method and apparatus for manufacturing a nanomaterial, which can manufacture a high-purity nanomaterial are disclosed.

Abstract: The present disclosure provides a method for producing a boron nitride nanotube by heating a boron precursor, and an apparatus therefor. According to an embodiment, a method of producing a boron nitride nanotube includes: inserting several reaction modules each accommodating a holding rod disposed through at least one precursor block into a supply chamber disposed at a front end of a reaction chamber; conveying N reaction modules of the several reaction modules inserted in the supply chamber to a reaction zone of the reaction chamber; growing a boron nitride nanotube in the precursor block by operating the reaction zone for a predetermined time, in the reaction chamber; and conveying the N reaction modules from the reaction chamber to a discharge chamber disposed at a rear end of the reaction chamber after the predetermined time passes. Accordingly, it is possible to maximize the yield and productivity of BNNTs.