Color printing with no ink

Unlike inkjet or laser printers, which use mixtures of various pigments to reproduce color on a printed page, a new process developed by a pair of S&T mechanical engineers uses nanomaterials for color printing with no ink. The finished product is visible only with the aid of a high-powered electron microscope.

Jie Gao and Xiaodong Yang

Xiaodong Yang and Jie Gao, both assistant professors of mechanical and aerospace engineering, say the process could be used for high-tech security markings that are invisible to the naked eye, or for a light-based method of information storage that could replace magnetic hard drives. Their work was published in the Nature Publishing Group journal Scientific Reports.

Their printing surface consists of a film of silica sandwiched between two thin films of silver. The top layer of silver film is punctured with tiny holes created by a microfabrication process known as focused ion beam milling. The researchers then beamed light through the holes to create an image using no ink — only the interaction of the materials and light.

By varying the size of the holes, the researchers could create different colors. So far they have produced gold, green, orange, magenta, cyan and navy blue.

Xiandong Yang (left) and Jie Gao, assistant professors of mechanical and aerospace engineering. Photo by B.A. Rupert.

Around the Puck

By the numbers: Fall/Winter 2018

8,607 Students enrolled for the fall semester at Missouri S&T. Classes started Aug. 20. 91 Percentage of first-year freshmen who receive scholarships and financial aid.

[Read More...]

Making tornado alley safer

Growing up in northeast China, Guirong “Grace” Yan didn’t see many tornados in a country where the number of documented twisters is a fraction of those that hit the United States. But as her academic career took Yan to several postdoctoral fellowships and then faculty positions in Indiana, Missouri and Texas, the assistant professor of […]

[Read More...]

Living laboratory houses lead battery research

This past November, Missouri S&T installed two new advanced lead battery microgrid systems at the EcoVillage, a “living laboratory” that is home to S&T’s solar-powered homes.

[Read More...]

Partners for progress

An expansion of the partnership between Missouri S&T and Missouri State University will allow students to pursue a mechanical engineering degree on the Missouri State campus with courses taught by faculty from both institutions. Students began applying this fall. The program will begin in fall 2019.

[Read More...]

Chancellor search is underway

This past August, University of Missouri President Mun Choi announced the formation of a 23-member committee to lead a nationwide search for a chancellor at Missouri S&T.

[Read More...]