American scholars with a new method of 3 d printing can produce micron grade items [abstract] at the university of California, Los Angeles, scholars has devised a new method for 3 d printing, can print complex micro objects smaller than a human hair, or will be in scope for biomedical and other fields.
Use "transient optical liquid molding" 3 d printing to print out the length of about
According to the university of California, Los Angeles's official
website reported that the school Henry ex-roma defender walter Samuel are elie engineering and application science College researchers have devised a new method for 3 d printing, can print complex micro objects smaller than a human hair, or will be biological Scope for medical and
other fields.The results of the study, published in the journal of advanced materials online.
Is by far the most common method of 3 d printing material manufacturing, it to trickle out from the pipe mouth, liquid materials in the liquid solidification in the process of the new layer will continue to cover it, until the object is completed.Despite increasing material manufacture and so on common method of 3 d printing can print out the shape of complex objects, but due to the large droplets material, hard to print out the scale of less than 1 mm.
In order to print out a fold, holes of small precision characteristics, such as custom objects, the researchers developed a new called "transient optical liquid molding" 3 d printing technology.This technology USES the pattern of polymer fluid and with ultraviolet light, can print out the micron scale items.
This technology will first two different fluid mixing between a series of small pillars.One kind of liquid is a macromolecule polymer, it is a precursor of the target object material, another liquid play the role of the polymer liquid polymer mold.Pillars are used to control the shape of a mixed fluid, the researchers can be rapidly through the special software to change the location of the pillars and sequence to decide to print the shape of the next.When stop injecting fluid material, with a special
pattern of ultraviolet ray beam can quickly cut into the fluid material, printing process is completed.
The researchers will increase the speed of this kind of 3 d printing method to print out 1 item about 5 seconds."It's like made noodle noodle machine, with mold first to squeeze the dough into noodles - this is the role of the pillars of mould, and then use another mould cut noodles in section - this is the role of ultraviolet light with pattern."The study's lead author explains.
The team to print out the object scale in 100 microns (0.1 mm) to 500 microns, and with a tiny features of 10 microns to 15 microns, they also use this method to print out with special particles and particle position to precise control of the object.