The phrase "a unique expression" is correct and usable in written English.
You can use it when referring to a specific way of conveying an idea or feeling that is distinct or one-of-a-kind.
Example: "Her poem is truly a unique expression of her emotions, capturing the essence of her experiences."
Alternatives: "a distinctive expression" or "an original expression".
By performing meta-analysis of differentially expressed gene sets we defined a unique expression profile highly selective for quiescent HSC.
Because they inhabit specific niches within the GI tract, genes expressed specifically within them have a unique expression pattern.
We were then asking how many sex-specific genes were expressed in all species and which genes showed a unique expression pattern in one species only.
There's a unique expression of the creative intelligence of the world that lives uniquely as that business, that's not being expressed and can't be expressed, by anything other than that person or that business.
"The Price of Salt" was a unique expression of candor in a career built on artifice.
"This is what we call 'Beyond Luxury,' " said Jean-Christophe Bédos, Boucheron's chief executive, "a unique expression of excellence in design and craftsmanship".
"I thought Jessie had a unique expression of color and style," said Allyson Cohen, Bendel's merchandise manager for ready-to-wear.
The technique is very simple and a unique expression of the mixing-cup temperature valid for both cylindrical and plane geometries is generated.
"We are a nation of competitors," the university presidents wrote in response to the resolutions, "and among them are our alumni, many of whom consider intercollegiate athletics a unique expression of the vitality of our institutions".
To sum up: Would you say that your work is a unique expression of the digital world? A. I hope it's unique.
Response of unit initial condition can be calculated from Random Decrement (RD) signals, using matrix equations generated from multiple RD processes; this response also keeps a unique expression for a particular system.
