The assessment of the blood perfusion level of the body is significant as low perfusion can lead to severe organ dysfunctions resulting in a range of ailments including heart attacks and vascular diseases of the extremities. Researchers at the University of California have developed an electronic photoacoustic patch that can monitor 3D mapping of hemoglobin as well as core temperature in deep tissues down to centimeters below the skin compared to the traditional wearable devices that can only sense the biomolecules on the skin surface. This is a new, flexible, low-form-factor wearable patch that comfortably attaches to the skin and allows noninvasive long-term monitoring.
The patch is equipped with laser diode arrays and piezoelectric transducers in its soft silicone polymer matrix. These laser diodes emit pulsed lasers into the tissues, which then absorb the optical energy, and…
