The phrase "a vast array of applications" is correct and usable in written English.
It can be used when describing a wide variety of uses or functions for something, often in a technical or professional context.
Example: "The new software offers a vast array of applications, making it suitable for both personal and business use."
Alternatives: "a wide range of applications" or "a large selection of applications".
If recent scientific progress is a fair indicator, the future promises remarkable new developments in molecular recognition elements for use in biosensors with a vast array of applications.
Embedded systems are found in a vast array of applications such as consumer electronics, "smart" devices, communication equipment, automobiles, desktop computers, and medical equipment.
Collecting data from a large number of agents scattered over a region of interest is becoming an increasingly appealing paradigm to feed big data archives that lay the ground for a vast array of applications.
Distributions of mutation fitness effects from evolution experiments are available in an increasing number of species, opening the way for a vast array of applications in evolutionary biology.
Confocal micro-Raman spectroscopy, which depends on polarizability change of an oscillating molecule, has proven extremely versatile and has led to a vast array of applications across the disciplines of chemistry, physics, biology, biomedicine, engineering, and archeology.
And he sees a vast array of other applications for his Bayesian approach.
Trajectory design is a key problem in a vast array of robotic applications including the design of autonomous agile vehicles and of minimalist manipulators.
Dendrimers are being explored for a vast array of biomedical applications, and in this chapter we have given an account on the various aspects of this nanoengineered polymer, particularly in relevance to its drug delivery applications.
These new integrated fields, spread across the diversity of life sciences, are opening up a vast array of practical applications, ranging from new medical approaches, to alternative sources of energy, to new theoretical bases in the behavioral and social sciences.
In the last twenty years there has been an explosion in the demand for custom oligonucleotide synthesis to support a vast array of genomics applications.
Affordable Internet access has become a highly beneficial service for American consumers and producers, keeping production costs and consumer prices low for a vast array of innovations and applications – including free applications for banking, shopping, entertainment (music, games and videos), communications, social media, navigation, parking, ride-sharing and so on.
