The phrase "a unique and single" is correct and usable in written English.
It can be used to emphasize the exclusivity or individuality of something, often in contexts where you want to highlight that there is only one of a particular kind.
Example: "In this vast universe, Earth is a unique and single planet that supports life as we know it."
Alternatives: "one-of-a-kind" or "distinct and individual".
The films are highly nanostructured anatase-rutile TiO2 composite films with unique single crystal dendrites.
The experimental results were subsequently used for the identification of the material parameters of a constitutive model for granular materials recently proposed by Bier and Hartmann [A finite strain constitutive model for metal powder compaction using a unique and convex single surface yield function. accepted for publication by European Journal of Mechanics, Series A/Solids 2006.].
The desire to remember his contributions as those of a unique and brilliant individual who single-handedly guided the nation to democracy and stability is understandable, but neither accurate nor helpful.
This novel luciferase fusion protein was revealed to be a unique and useful tool for combined single-cell analysis and sensitive in vivo imaging in preclinical research.
The double mutant myb28myb29 has, compared to the single mutants, a unique and un-anticipated feature.
We provide genetic proof that the presence of red flesh (fruit core) and red foliage in apple can be determined by a unique single locus and we have named one allele controlling the red colour Rni, on the basis of its origin from M. pumila var.
It was to be "purified" down to a single voice, a unique authority, and a single leadership for Islam.
Indeed, results demonstrated the existence of 5′ and 3′ non-coding regions and, a unique single open reading frame that encoded a polyprotein containing all the structural proteins in the N-terminal region of the genome and all the non-structural proteins in the C terminal region of the genome.
Therefore, we sought to obtain a unique association between single peaks and promoters in order to reduce the number of false positives.
Pilot plant results showed that integrated drying and incineration is feasible in a unique single system.
