Barbara Gefvert

Editor-in-Chief, BioOptics World (2008-2020)

Barbara G. Gefvert has been a science and technology editor and writer since 1987, and served as editor in chief on multiple publications, including Sensors magazine for nearly a decade.

FIGURE 1. SS-OCT at megahertz speed is not as futuristic as it may seem: The OCTA 12 × 12 mm FOV scan (a) was captured in less than 2.5 s (at 1.7 million A-scans/second) and delivers the same quality as the image in (b), which took 25 s to scan using a 100 kHz system.
Detectors & Imaging

New directions in biomedical OCT

May 19, 2020
An industry session at BiOS 2020 reveals where new developments are taking OCT.
(Image credit: Gerhard Litscher)
A photobiomodulation helmet that emits about 15 W of light at an 810 nm wavelength is put to the test.
Lasers & Sources

Phototherapy: Brain photobiomodulation makes initial steps

Feb. 18, 2020
Near-infrared light stimulates mitochondrial activity and is being tested in both animals and humans as a possible way to lessen cognitive dysfunction.
Structured illumination microscopy (SIM) provides spatial superresolution through analysis of the Moire pattern that results when two frequencies overlap (a). SIM expands the spatial reciprocal domain (b), while pSIM expands both the spatial and angular reciprocal domains (c).

Live-cell Imaging: Polarization adds rich context to SIM images

Jan. 28, 2020
A new technique allows standard commercial structured illumination microscopy (SIM) systems to achieve superresolution polarization imaging.