[1] Zhou C Y, Luo L, Liu Y et al. Research status of additive manufacturing technology for metal[J]. Hot Working Technology, 47, 9-14(2018).

[2] Zhou Y H, Zhang Z H, Wang Y P et al. Selective laser melting of typical metallic materials: an effective process prediction model developed by energy absorption and consumption analysis[J]. Additive Manufacturing, 25, 204-217(2019).

[3] Yao Y S, Wang J, Chen Q B et al. Research status of defects and defect treatment technology for laser additive manufactured products[J]. Laser & Optoelectronics Progress, 56, 100004(2019).

[4] Jiang H Z, Li Z Y, Feng T et al. Factor analysis of selective laser melting process parameters with normalised quantities and Taguchi method[J]. Optics & Laser Technology, 119, 105592(2019).

[5] Xu J G, Chen Y, Chen H et al. Influence of process parameters on forming defects of H13 steel processed by selective laser melting[J]. Laser & Optoelectronics Progress, 55, 041405(2018).

[6] Zhang D Y, Zhang P D, Liu Z et al. Thermofluid field of molten pool and its effects during selective laser melting (SLM) of Inconel 718 alloy[J]. Additive Manufacturing, 21, 567-578(2018).

[7] Kundakcıoglu E, Lazoglu I, Poyraz Ö et al. Thermal and molten pool model in selective laser melting process of Inconel 625[J]. The International Journal of Advanced Manufacturing Technology, 95, 3977-3984(2018).

[8] Wang H F, Tian X J, Cheng X et al. Effects of thermal deformation conditions on microstructures and deformation behaviors of laser additive manufactured TC18 titanium alloys[J]. Chinese Journal of Lasers, 45, 0302008(2018).

[9] Sun B B, Fang L J, Zhang X J. Study on forming process and microstructure of GH4169 Ni-based superalloy prepared by selective laser melting[J]. Hot Working Technology, 48, 93-98(2019).

[10] Liu W, Liu T T, Liao W H et al. Study on selective laser melting forming process of cobalt chromium alloy[J]. Chinese Journal of Lasers, 42, 0503001(2015).

[11] Zhang X Y, Li X B, Tan Z et al. Microstructure and mechanical properties of water atomized Cu-10Sn alloy powder formed parts by selective laser melting[J]. Chinese Journal of Lasers, 45, 1002009(2018).

[12] Cao H Y, Chen X Z, Hu C et al. Welding quality online detection based on infrared temperature measurement[J]. Journal of Shanghai Jiao Tong University, 50, 66-70(2016).

[13] Yuan Y H, Yang Q, Yan Z H et al. Research and measurement of surface temperature field in laser cladding forming molten pool[J]. Laser & Infrared, 48, 985-992(2018).

[14] Mazzoleni L, Demir A G, Caprio L et al. Real-time observation of melt pool in selective laser melting: spatial, temporal and wavelength resolution criteria[J]. IEEE Transactions on Instrumentation and Measurement, 1(2019).

[15] Liu T T, Liao W H, Zhang K et al. Selective laser melting forming hardness rule of cobalt chromium alloy and its prediction model[J]. Chinese Journal of Lasers, 43, 0303007(2016).

[16] Du D Z, Liu T T, Liao W H et al. Design of monitoring system of melt pool light intensity in selective laser melting[J]. Infrared and Laser Engineering, 46, 1206002(2017).

[17] Shao L C. Study of an improved two-colour method integrated with the emissivity ratio model and its application to air-and oxy-fuel flames[D]. Hangzhou: Zhejiang University(2018).

[18] Dai D H. Cu-based composites fabricated by selective laser melting: simulation and experiments[D]. Nanjing: Nanjing University of Aeronautics and Astronautics(2014).

[19] Ye W J. Numeriacl simulation on temperature field and morphology evolution of molten pool during selective laser melting processing Xi'an: Xi'an University of[D]. Technology(2019).

[20] Li C C. Microheterogeneity and structure evolution of Cu-Sn alloy melts[D]. Jinan: University of Jinan(2013).

[21] Menon P S, Tasirin S K, Ahmad I et al. High performance of a SOI-based lateral PIN photodiode using SiGe/Si multilayer quantum well. [C]∥2012 10th IEEE International Conference on Semiconductor Electronics (ICSE), September 19-21, 2012, Kuala Lumpur, Malaysia. New York: IEEE, 403-406(2012).

[22] Wang W, Cui M, Li M W et al. Design of pA level current signal detection circuit[J]. Journal of North University of China(Natural Science Edition), 40, 173-179(2019).

[23] Sai Kumar K, Lokesh Krishna K. Sidda Reddy P R, et al. Implementation of a CMOS operational amplifier using composite cascode stages. [C]∥2019 5th International Conference on Advanced Computing & Communication Systems (ICACCS), March 15-16, 2019, Coimbatore, India. New York: IEEE, 689-693(2019).

[24] Groner S, Polak M. Low-distortion, low-noise composite operational amplifier[J]. Journal of the Audio Engineering Society, 65, 402-407(2017).

[25] Gift S J G, Maundy B. Versatile composite amplifier configuration[J]. International Journal of Electronics, 102, 993-1006(2015).