Most Popular Editorial
SPIE's AR/VR/MR All-Day Conference Delivers Immersive Experience
By Ed Biller, editor, Photonics Online

After feasting on a full day of insight from some of the most prominent names in altered and virtual reality technologies, attendees were treated to a panel discussion that assembled pioneers in the space, asking them to muse on its past, present, and future.

Most Popular Articles
Building A Do-It-Yourself Atomic Force Microscope
By James F. MacKay, Mad City Labs

Atomic force microscopes (AFMs) are versatile tools for characterizing surfaces down to the subnanometer scale. Researchers can build their own AFMs for as little as $30,000 using off-the-shelf components such as nanopositioning stages.

Understanding A Camera’s Resolution
The resolution of an image sensor describes the total number of pixels that can be used to detect an image. From the standpoint of the image sensor, it is sufficient to count the number and describe it usually as the product of the horizontal number of pixels times the vertical number of pixels.
Using High-Speed Infrared Imaging In Additive Manufacturing
Additive manufacturing, or 3D printing, involves extremely high-thermal gradients that can sometimes induce stress and deformation in the materials. High-speed infrared imaging of this direct metal laser sintering (DMLS) process on stainless steel has been used to better understand and visualize these thermal transfers.
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