Two-dimensional electron gases induced by spontaneous and piezoelectric polarization charges in N-and Ga-face AlGaN/GaN heterostructures O Ambacher, J Smart, JR Shealy, NG Weimann, K Chu, M Murphy, ...
Journal of applied physics 85 (6), 3222-3233, 1999
3445 1999 Two dimensional electron gases induced by spontaneous and piezoelectric polarization in undoped and doped AlGaN/GaN heterostructures O Ambacher, B Foutz, J Smart, JR Shealy, NG Weimann, K Chu, ...
Journal of applied physics 87 (1), 334-344, 2000
1983 2000 Scattering of electrons at threading dislocations in GaN NG Weimann, LF Eastman, D Doppalapudi, HM Ng, TD Moustakas
Journal of Applied Physics 83 (7), 3656-3659, 1998
800 1998 The role of dislocation scattering in n -type GaN films HM Ng, D Doppalapudi, TD Moustakas, NG Weimann, LF Eastman
Applied physics letters 73 (6), 821-823, 1998
537 1998 Undoped AlGaN/GaN HEMTs for microwave power amplification LF Eastman, V Tilak, J Smart, BM Green, EM Chumbes, R Dimitrov, H Kim, ...
IEEE Transactions on Electron Devices 48 (3), 479-485, 2001
468 2001 GaN nanotip pyramids formed by anisotropic etching HM Ng, NG Weimann, A Chowdhury
Journal of applied physics 94 (1), 650-653, 2003
212 2003 Second-harmonic generation in periodically poled GaN A Chowdhury, HM Ng, M Bhardwaj, NG Weimann
Applied physics letters 83 (6), 1077-1079, 2003
201 2003 Monlithically coupled waveguide and phototransistor YK Chen, VE Houtsma, AB Leven, NG Weimann
US Patent 7,471,855, 2008
199 2008 Role of spontaneous and piezoelectric polarization induced effects in group‐III nitride based heterostructures and devices O Ambacher, R Dimitrov, M Stutzmann, BE Foutz, MJ Murphy, JA Smart, ...
physica status solidi (b) 216 (1), 381-389, 1999
195 1999 AlGaN/GaN heterostructures on insulating AlGaN nucleation layers JA Smart, AT Schremer, NG Weimann, O Ambacher, LF Eastman, ...
Applied physics letters 75 (3), 388-390, 1999
115 1999 SiGe differential transimpedance amplifier with 50-GHz bandwidth JS Weiner, A Leven, V Houtsma, Y Baeyens, YK Chen, P Paschke, ...
IEEE Journal of Solid-State Circuits 38 (9), 1512-1517, 2003
101 2003 High mobility AlGaN/GaN heterostructures grown by plasma-assisted molecular beam epitaxy on semi-insulating GaN templates prepared by hydride vapor phase epitaxy MJ Manfra, NG Weimann, JWP Hsu, LN Pfeiffer, KW West, S Syed, ...
Journal of applied physics 92 (1), 338-345, 2002
98 2002 Compact InP-based HBT VCOs with a wide tuning range at W-and D-band Y Baeyens, C Dorschky, N Weimann, Q Lee, R Kopf, G Georgiou, ...
IEEE Transactions on Microwave Theory and Techniques 48 (12), 2403-2408, 2000
75 2000 Patterning GaN microstructures by polarity-selective chemical etching HM Ng, W Parz, NG Weimann, A Chowdhury
Japanese Journal of Applied Physics 42 (12A), L1405, 2003
73 2003 Impact of Si doping on radio frequency dispersion in unpassivated GaN/AlGaN/GaN high-electron-mobility transistors grown by plasma-assisted molecular-beam epitaxy O Mitrofanov, M Manfra, N Weimann
Applied physics letters 82 (24), 4361-4363, 2003
66 2003 An InGaAs-InP HBT differential transimpedance amplifier with 47-GHz bandwidth JS Weiner, JS Lee, A Leven, Y Baeyens, V Houtsma, G Georgiou, Y Yang, ...
IEEE journal of solid-state circuits 39 (10), 1720-1723, 2004
58 2004 High-reflectivity ultraviolet O Mitrofanov, S Schmult, MJ Manfra, T Siegrist, NG Weimann, AM Sergent, ...
Applied physics letters 88 (17), 171101, 2006
57 2006 Dislocation and morphology control during molecular-beam epitaxy of AlGaN/GaN heterostructures directly on sapphire substrates MJ Manfra, NG Weimann, JWP Hsu, LN Pfeiffer, KW West, SNG Chu
Applied physics letters 81 (8), 1456-1458, 2002
56 2002 Unpassivated AlGaN-GaN HEMTs with minimal RF dispersion grown by plasma-assisted MBE on semi-insulating 6H-SiC substrates NG Weimann, MJ Manfra, T Wachtler
IEEE Electron Device Letters 24 (2), 57-59, 2003
51 2003 Smooth and vertical-sidewall InP etching using J Lin, A Leven, NG Weimann, Y Yang, RF Kopf, R Reyes, YK Chen, ...
Journal of Vacuum Science & Technology B: Microelectronics and Nanometer …, 2004
47 2004 