Glymphatic clearance of simulated silicon dispersion in mouse brain analyzed by laser induced breakdown spectroscopy.

Silicon-based devices, such as neural probes, are increasingly used as electrodes for receiving electrical signals from neural tissue. Neural probes used chronically have been known to induce inflammation and elicit an immune response. The current study detects and evaluates silicon dispersion from a concentrated source in the mouse brain using laser induced breakdown spectroscopy.

Rapid and in situ optical detection of trace lithium in tissues.

Lithium-based medications are used successfully to treat many mental disorders, including bipolar disorder and Alzheimer's disease. However, the therapeutic mechanisms are not well characterized due to limitations in detecting lithium in organs and cells. This limits the ability to improve lithium-based treatments.

Raman spectroscopy of bone composition during healing of subcritical calvarial defects.

Subcritical calvarial defects heal spontaneously and optical methods can study the healing without mechanically perturbing the bone. In this study, 1mm defects were created on the skulls (in vivo) of Sprague-Dawley rats (n = 14). After 7 (n = 7) and 14 days (n = 7) of healing, the subjects were sacrificed and additional defects were similarly created (control).

Elemental analysis of the thyroid by laser induced breakdown spectroscopy.

The thyroid is an important hormone regulation organ. Laser induced breakdown spectroscopy (LIBS) is developed to assess iodine and other essential elements in the thyroid (of rats). Subjects are administered 0.

In situ cellular level Raman spectroscopy of the thyroid.

We report a novel Raman spectroscopy method for in situ cellular level analysis of the thyroid. Thyroids are harvested from control and lithium treated mice. Lithium is used to treat bipolar disorder, but affects thyroid function.