研究目的
To estimate the potential use of boron nitride nanotube (BNNT) emitters for robust electron sources by evaluating their field emission performance according to vacuum pressure.
研究成果
The study concluded that ion bombardment is a dominant factor in the emission degradation of BNNT field emitters rather than oxidation, based on experiments under varying vacuum pressures and ambient conditions.
研究不足
The study focused on the effects of vacuum pressure and ambient conditions on BNNT field emitters but did not explore other potential factors affecting field emission performance. The long-term stability beyond 2 hours was not investigated.
1：Experimental Design and Method Selection:
The study involved fabricating free-standing BNNT films by dispersing BNNT powder in a specific solvent, forming a film via vacuum suction, and then evaluating the field emission properties under varying vacuum pressures and ambient conditions.
2：Sample Selection and Data Sources:
BNNT powder was used to fabricate the emitters. Field emission properties were measured using a diode configuration in a vacuum chamber.
3：List of Experimental Equipment and Materials:
BNNT powder, specific solvent, filtration equipment, membrane, stainless steel plates, vacuum chamber, argon gas.
4：Experimental Procedures and Operational Workflow:
The BNNT suspension was poured into filtration equipment to form a film, which was then cut and clamped between stainless steel plates for field emission testing under different vacuum pressures and ambient conditions.
5：Data Analysis Methods:
Field emission properties were analyzed based on current density-electric field characteristics and emission stability tests.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
