Cubic Boron Nitride Microneedles (IMAGE) North Carolina State University Caption This is a scanning electron micrograph of c-BN nanoneedles and microneedles up to three microns in length. Credit Anagh Bhaumik Usage Restrictions Image credit must be given. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.