Reproducible data and rapid turnaround

Bead-based technology represents a fundamentally different approach to high-density arrays

BeadArray Microarray Technology

BeadArray microarray technology is based on 3-micron silica beads that self assemble in microwells on either of two substrates: fiber optic bundles or planar silica slides. When randomly assembled on one of these two substrates, the beads have a uniform spacing of ~5.7 microns. Each bead is covered with hundreds of thousands of copies of a specific oligonucleotide that act as the capture sequences in a given Illumina assay.

Multi-sample Array Formats

BeadArray product density advancements have increased genomic coverage for whole-genome genotyping, resolution for cytogenetics and CNV detection, and sample throughput for DNA methylation and focused genotyping.

BeadArray microarray technology is deployed on either of two multi-sample array formats for DNA or RNA analysis applications. With multi-sample BeadChip formats, uniform pits are etched into the surface of each substrate to a depth of approximately 3 microns prior to assembly. Beads are then randomly assembled and held in these microwells by Van der Waals forces and hydrostatic interactions with the walls of the well.

Publication Reviews

Find highlights of recently published research using Illumina technology, in areas from cancer to microbiology and more.

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Publication Reviews

BeadArray microarray technology is utilized in Illumina array products and array scanners for a broad range of DNA and RNA analysis applications.

The iScan System features advanced laser and optics components capable of quickly scanning even the highest density multi-sample arrays, producing high-quality data with rapid turnaround times.

Learn More About Microarray Scanners

The advanced Infinium HD Assay delivers high data quality with an average call rate of 99.9%. These high sample call rates simplify downstream data curation and decrease the likelihood of false positives and negatives.

The Infinium Methylation Assay offers genome-wide methylation analysis with quantitative measurement at the single-CpG-site level.

Learn More About Illumina Microarrays
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