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Updated: Nov 22, 2025

Author Spotlight: Innovative Microneedle-Based Strategies for Enhanced Exosome Delivery and Stability
Published on: July 12, 2024
Characterization of microneedles and microchannels for enhanced transdermal drug delivery
Ashana Puri1, Hiep X Nguyen2, Akeemat O Tijani3
1Department of Pharmaceutical Sciences, Bill Gatton College of Pharmacy, East Tennessee State University, Johnson City, TN 37614, USA.
Abstract:
Microneedle (MN)-based technologies are currently one of the most innovative approaches that are being extensively investigated for transdermal delivery of low molecular weight drugs, biotherapeutic agents and vaccines. Extensive research reports, describing the fabrication and applications of different types of MNs, can be readily found in the literature. Effective characterization tools to evaluate the quality and performance of the MNs as well as for determination of the dimensional and kinetic properties of the microchannels created in the skin, are an essential and critical part of MN-based research. This review paper provides a comprehensive account of all such tools and techniques.
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