A study reports the elastic properties and tensile strength of monolayer Ti3C2Tx MXene nanosheets. Using a novel "Push-to-Pull" (PTP) nanomechanical device and optimized sample preparation, the researchers performed in-situ tensile tests on monolayer Ti3C2Tx nanosheets. The effective Young's modulus was measured as 0.484 ± 0.013 TPa, closely matching the theoretical value of 0.502 TPa. The measured elastic stiffness was ~948 N/m, and the monolayer exhibited an average elastic strain of ~3.2% and a tensile strength of ~15.4 GPa. These results correct previous reports using the nanoindentation method, which gave a lower value of 0.33 TPa. The study also demonstrates that monolayer Ti3C2Tx MXene has significant potential for applications in flexible electronics, electromechanical devices, and structural membranes. The mechanical properties of monolayer Ti3C2Tx were validated through molecular dynamics simulations, showing that the effective Young's modulus is ~484 GPa, close to the theoretical prediction of 502 GPa. The study highlights the importance of monolayer measurements in understanding the intrinsic properties of MXene and its composites. The results also show that the tensile strength of monolayer Ti3C2Tx is significantly higher than that of previously reported multilayer Ti3C2Tx. The study provides a reliable method for measuring the mechanical properties of monolayer MXene and offers insights into the potential applications of Ti3C2Tx in various fields. The results suggest that Ti3C2Tx has promising applications in strain engineering, energy storage, and flexible electronics. The study also addresses the challenges of measuring the mechanical properties of monolayer MXene due to their nanoscale thickness and the limitations of existing methods. The findings contribute to the understanding of the mechanical behavior of MXene and its potential for future applications.A study reports the elastic properties and tensile strength of monolayer Ti3C2Tx MXene nanosheets. Using a novel "Push-to-Pull" (PTP) nanomechanical device and optimized sample preparation, the researchers performed in-situ tensile tests on monolayer Ti3C2Tx nanosheets. The effective Young's modulus was measured as 0.484 ± 0.013 TPa, closely matching the theoretical value of 0.502 TPa. The measured elastic stiffness was ~948 N/m, and the monolayer exhibited an average elastic strain of ~3.2% and a tensile strength of ~15.4 GPa. These results correct previous reports using the nanoindentation method, which gave a lower value of 0.33 TPa. The study also demonstrates that monolayer Ti3C2Tx MXene has significant potential for applications in flexible electronics, electromechanical devices, and structural membranes. The mechanical properties of monolayer Ti3C2Tx were validated through molecular dynamics simulations, showing that the effective Young's modulus is ~484 GPa, close to the theoretical prediction of 502 GPa. The study highlights the importance of monolayer measurements in understanding the intrinsic properties of MXene and its composites. The results also show that the tensile strength of monolayer Ti3C2Tx is significantly higher than that of previously reported multilayer Ti3C2Tx. The study provides a reliable method for measuring the mechanical properties of monolayer MXene and offers insights into the potential applications of Ti3C2Tx in various fields. The results suggest that Ti3C2Tx has promising applications in strain engineering, energy storage, and flexible electronics. The study also addresses the challenges of measuring the mechanical properties of monolayer MXene due to their nanoscale thickness and the limitations of existing methods. The findings contribute to the understanding of the mechanical behavior of MXene and its potential for future applications.