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In one aspect, the disclosure relates to a smart pseudo-palate for use in a Smart Electropalatograph (EPG) for Linguistic and Medical Applications (SELMA) system. In one aspect, the pseudo-palate is constructed from a thin, flexible polymer membrane and having an embedded electrode array. The pseudo-palate is configured to detect tongue contacts during speech while causing minimal disturbance or interference with speech motion. The disclosed pseudo-palate in the SELMA system is integrated with a microcontroller, wireless electronic module, and external readout app. The disclosure, in another aspect, relates to integration of the pseudo-palate with a smart sports/health mouth guard containing a series of sensors for monitoring head impacts, body temperature, and heart rate. The SELMA system is capable of automated detection of neurological conditions and brain injury including, but not limited to, concussion, and neurological movement disorders, using acoustic, articulatory, and other biosignals from the device using deep data analysis. 

In this work, a composite of barium ferrite (BaM) and multiwalled carbon nanotubes (CNTs) in a polymer matrix of polydimethylsiloxane (PDMS) are reported for the purpose of suppressing electromagnetic interference (EMI). Shielding is accomplished primarily through absorption, which arises from a combination of the ferromagnetic resonance (FMR) from the BaM and conductive losses from the CNTs. The composite is fabricated by mixing commercially available BaM nanoparticles and CNTs into PDMS, screen printing the mixture into molds, then curing at 80 °C in a DC magnetic field. Characterization involves placing the composite in the cross‐section of a rectangular waveguide, then using a vector network analyzer (VNA) to measure scattering (S) parameters from 33–50 GHz. Using the measured S parameters, power reflected and absorbed can be calculated and used to characterize the composite's shielding effectiveness (SE), and the complex permittivity and permeability can be determined. The resulting 2.4 mm thick composite shows a peak absorption of 26.9 dB at the FMR frequency of 47.4 GHz. When normalized for thickness, the composite, on average, absorbs 11.3 dB mm⁻¹and operates at a higher frequency than other shielding composites found in the literature.