[1] [1] YANAGISAWA H, HAFNER C, DON P, et al. Laser-induced field emission from a tungsten tip: optical control of emission sites and the emission process［J］. Physical Review B, 2010, 81(11): 115429.

[2] [2] SANKARAN K J, AFSAL M, LOU S C, et al. Electron field emission enhancement of vertically aligned ultrananocrystalline diamond-coated ZnO core-shell heterostructured nanorods［J］. Small, 2014, 10(1): 179-185.

[3] [3] CHEN S L, SHANG M H, GAO F M, et al. Extremely stable current emission of P-doped SiC flexible field emitters［J］. Advanced Science, 2016, 3(1): 1500256.

[4] [4] CHEN J, CUI L, SUN D, et al. Enhanced field emission properties from aligned graphenes fabricated on micro-hole patterned stainless steel［J］. Applied Physics Letters, 2014, 105(21): 213111.

[5] [5] CHEN J, YANG B, LIU X, et al. Field electron emission from pencil-drawn cold cathodes［J］. Applied Physics Letters, 2016, 108(19): 193112.

[6] [6] SRIDHAR S, TIWARY C, VINOD S, et al. Field emission with ultralow turn on voltage from metal decorated carbon nanotubes［J］. ACS Nano, 2014, 8(8): 7763-7770.

[7] [7] LAHIRI I, WONG J, ZHOU Z L, et al. Ultra-high current density carbon nanotube field emitter structure on three-dimensional micro-channeled copper［J］. Applied Physics Letters, 2012, 101(6): 063110.

[8] [8] GAUTIER L A, LE BORGNE V, EL KHAKANI M A. Field emission properties of graphenated multi-wall carbon nanotubes grown by plasma enhanced chemical vapour deposition［J］. Carbon, 2016, 98: 259-266.

[9] [9] CHEN Z, DEN ENGELSEN D, BACHMANN P K, et al. High emission current density microwave-plasma-grown carbon nanotube arrays by postdepositional radio-frequency oxygen plasma treatment［J］. Applied Physics Letters, 2005, 87(24): 243104.

[10] [10] PARK S A, SONG E H, KANG B H, et al. Carbon nanotube field emitters on KOVAR substrate modified by random pattern［J］. Journal of Nanoparticle Research, 2015, 17(7): 318.

[11] [11] KIM J W, JEONG J W, KANG J T, et al. Great improvement in adhesion and uniformity of carbon nanotube field emitters through reactive nanometer-scale SiC fillers［J］. Carbon, 2015, 82: 245-253.

[12] [12] EVANS-NGUYEN T, PARKER C B, HAMMOCK C, et al. Carbon nanotube electron ionization source for portable mass spectrometry［J］. Analytical Chemistry, 2011, 83(17): 6527-6531.

[13] [13] KRYSZTOF M, GRZEBYK T, SZYSZKA P, et al. Technology and parameters of thin mebrane-anode for MEMS transmission electron microscope［J］. J Vac Sci Technol B, 2018, 36(2):02C107.

[14] [14] CHEN J T, YANG B J, LIM Y D, et al. Field emission cathode based on three-dimensional framework carbon and its operation under the driving of a triboelectric nanogenerator［J］. Nano Energy, 2018, 49: 308-315.

[15] [15] LASZCZYK K U. Field emission cathodes to form an electron beam prepared from carbon nanotube suspensions［J］. Micromachines, 2020, 11(3): 260.

[16] [16] DE JONGE N, LAMY Y, SCHOOTS K, et al. High brightness electron beam from a multi-walled carbon nanotube［J］. Nature, 2002, 420(6914): 393-395.

[17] [17] BONARD J M, KIND H, STCKLI T, et al. Field emission from carbon nanotubes: the first five years［J］. Solid-State Electronics, 2001, 45(6): 893-914.

[18] [18] COLLINS P G, ZETTL A. A simple and robust electron beam source from carbon nanotubes［J］. Applied Physics Letters, 1996, 69(13): 1969-1971.

[19] [19] HOUDELLIER F, DE KNOOP L, GATEL C, et al. Development of TEM and SEM high brightness electron guns using cold-field emission from a carbon nanotip［J］. Ultramicroscopy, 2015, 151: 107-115.