Related Experiment Video
Updated: Feb 14, 2026

Residue-Free Fabrication of van der Waals Heterostructures of Two-Dimensional Materials
Published on: July 18, 2025
Interfacial Charge-Transfer Engineering in Borophene-MWCNT Heterostructures for Multifunctional Humidity and
Anran Ma1, Tao Wang1,2, Zhilin Zhao1
1State Key Laboratory of Mechanics and Control for Aerospace Structures, Laboratory of Intelligent Nano Materials, Devices of Ministry of Education, College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
None:
Humidity sensing is essential in medical fields such as respiratory support, neonatal care, sterilization, and pharmaceutical storage. However, current sensors face limitations, including slow response/recovery, low sensitivity, and poor long-term stability. To address these challenges, we developed borophene-multiwalled carbon nanotube (MWCNT) heterostructures using a stepwise in situ thermal decomposition method. The resulting humidity sensor exhibits an ultrabroad detection range (11-97% RH), ultra-high sensitivity (55,000% at 97% RH), and fast response/recovery times (10.04 s/4.8 s). Through interfacial charge-transfer engineering, the system facilitates rapid electron migration, enhances Schottky barrier modulation, and provides abundant active adsorption sites for water molecules, thereby achieving comprehensive improvement in sensing performance. It also demonstrates excellent selectivity, mechanical flexibility, and operational stability. Notably, the sensor's sensitivity at 97% RH surpasses that of sensors based on pure borophene or MWCNT by 37-462 times, highlighting the advantages of heterostructure engineering. The multifunctionality of the device suggests its potential in areas beyond conventional sensing, including non-contact voice recognition, skin humidity mapping, and real-time breath monitoring. These results lay a solid foundation for developing borophene-MWCNT heterostructures into a high-performance platform for next-generation medical diagnostics and intelligent health monitoring.
Related Concept Videos
Formal Charges
Ions and Ionic Charges
The Sense of Self: Reflected Self-Appraisal and Social Comparison
Interfacial Electrochemical Methods: Overview
Atomic Radii and Effective Nuclear Charge
Electric Charges
The English physicist William Gilbert studied the phenomenon of static electricity in...

