Journal Article Review memristors 2D materials COVID-19 Calcium Calmodulin Hemoglobins Myoglobin North American Carbon Program Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. SY7Q814VUP Standardized mortality ratio age-specific artificial intelligence case fatality rate energy conversion efficiency energy harvesting femtojoules forest ecosystems gate-tunable devices hexagonal boron nitride (h-BN) memory non-structural carbohydrates non-volatile memory nonlinear logistic model phenological events photosynthesis piezoelectric materials