Yeh, Nai-Chang

Combined from CaltechAUTHORS

• Lu, Chen-Hsuan and Hao, Duxing, et el. (2024) A perspective of recent advances in PECVD-grown graphene thin films for scientific research and technological applications; Materials Chemistry and Physics; Vol. 319; 129318; 10.1016/j.matchemphys.2024.129318
• Park, Akiyoshi and Llanos, Adrian, et el. (2024) Phonon and defect mediated quantum anomalous Hall insulator to metal transition in magnetically doped topological insulators; Physical Review B; Vol. 109; No. 7; 075125; 10.1103/physrevb.109.075125
• Lin, Wei‐Hsiang and Li, Chia‐Shuo, et el. (2024) Dramatically Enhanced Valley-Polarized Emission by Alloying and Electrical Tuning of Monolayer WTe₂ₓS₂₍₁₋ₓ₎ Alloys at Room Temperature with 1T′-WTe₂-Contact; Advanced Science; Vol. 11; No. 2; 2304890; PMCID PMC10787083; 10.1002/advs.202304890
• Lu, Chen-Hsuan and Shang, Kuang-Ming, et el. (2023) Low-Temperature Direct Growth of Nanocrystalline Multilayer Graphene on Silver with Long-Term Surface Passivation; ACS Applied Materials & Interfaces; Vol. 15; No. 7; 9883-9891; PMCID PMC9951176; 10.1021/acsami.2c21809
• Kesarwani, Rahul and Simbulan, Kristan Bryan, et el. (2022) Control of trion-to-exciton conversion in monolayer WS₂ by orbital angular momentum of light; Science Advances; Vol. 8; No. 13; eabm0100; PMCID PMC10938575; 10.1126/sciadv.abm0100
• Lu, Chen-Hsuan and Shang, Kuang-Ming, et el. (2022) Graphene on Nanoscale-Thick Au Films: Implications for Anticorrosion in Smart Wearable Electronics; ACS Applied Nano Materials; Vol. 5; No. 3; 4343-4349; 10.1021/acsanm.2c00401
• Lin, Wei‐Hsiang and Wu, Pin Chieh, et el. (2022) Electrically Tunable and Dramatically Enhanced Valley-Polarized Emission of Monolayer WS₂ at Room Temperature with Plasmonic Archimedes Spiral Nanostructures; Advanced Materials; Vol. 34; No. 3; Art. No. 2104863; 10.1002/adma.202104863
• Lu, Chen-Hsuan and Leu, Chyi-Ming, et el. (2021) Polymer-Compatible Low-Temperature Plasma-Enhanced Chemical Vapor Deposition of Graphene on Electroplated Cu for Flexible Hybrid Electronics; ACS Applied Materials & Interfaces; Vol. 13; No. 34; 41323-41329; 10.1021/acsami.1c11510
• Feng, Zhenjie and Hou, Qiang, et el. (2021) Selenium‐doping induced two antiferromagnetic transitions in thiospinel compounds CuCo₂S_(4‐x)Se_x (0 ≤ x ≤ 0.8); Journal of the American Ceramic Society; Vol. 104; No. 4; 1806-1813; 10.1111/jace.17607
• Bagley, Jacob D. and Danielsen, Dorte R., et el. (2021) Significant Capacitance Enhancement via In Situ Exfoliation of Quasi-One-Dimensional Graphene Nanostripes in Supercapacitor Electrodes; ACS Omega; Vol. 6; No. 8; 5679-5688; PMCID PMC7931431; 10.1021/acsomega.0c06048
• Feng, Z. and Si, J., et el. (2021) Evidences for pressure-induced two-phase superconductivity and mixed structures of NiTe₂ and NiTe in type-II Dirac semimetal NiTe_(2-x) (x = 0.38 ± 0.09) single crystals; Materials Today Physics; Vol. 17; Art. No. 100339; 10.1016/j.mtphys.2020.100339
• Lu, Chen-Hsuan and Leu, Chyi-Ming, et el. (2021) Single-Step Direct Growth of Graphene on Cu Ink toward Flexible Hybrid Electronic Applications by Plasma-Enhanced Chemical Vapor Deposition; ACS Applied Materials & Interfaces; Vol. 13; No. 5; 6951-6959; 10.1021/acsami.0c22207
• Bagley, Jacob D. and Kishore Kumar, Deepan, et el. (2020) Selective formation of pyridinic-type nitrogen-doped graphene and its application in lithium-ion battery anodes; RSC Advances; Vol. 10; No. 65; 39562-39571; PMCID PMC9057402; 10.1039/d0ra06199a
• Tseng, Wei-Shiuan and Chen, Yen-Chun, et el. (2020) Direct Large-Area Growth of Graphene on Silicon for Potential Ultra-Low-Friction Applications and Silicon-Based Technologies; Nanotechnology; Vol. 31; No. 33; Art. No. 335602; 10.1088/1361-6528/ab9045
• Lu, Chen-Hsuan and Leu, Chyi-Ming, et el. (2020) P-60: Single-Step Plasma-Enhanced Chemical Vapor Deposition of Graphene on Cu Ink and Sputtered Cu Thin Films; SID Symposium Digest of Technical Papers; Vol. 51; No. 1; 1565-1568; 10.1002/sdtp.14190
• Hsu, C.-C. and Teague, M. L., et el. (2020) Nanoscale strain engineering of giant pseudo-magnetic fields, valley polarization, and topological channels in graphene; Science Advances; Vol. 6; No. 19; Art. No. eaat9488; PMCID PMC7209983; 10.1126/sciadv.aat9488
• Li, Tao and Wang, Ke, et el. (2020) Pressure-induced superconductivity in topological type II Dirac semimetal NiTe₂; 10.48550/arXiv.1911.07173
• Li, Tao and Feng, Zhenjie, et el. (2020) Effects of Cr doping on the superconductivity and magnetism of FeTe_(0.8)S_(0.2); Solid State Communications; Vol. 309; Art. No. 113846; 10.1016/j.ssc.2020.113846
• Lin, Wei-Hsiang and Tseng, Wei-Shiuan, et el. (2020) Nearly 90% Circularly-Polarized Emission in Monolayer WS₂ Single Crystals by Chemical Vapor Deposition; ACS Nano; Vol. 14; No. 2; 1350-1359; 10.1021/acsnano.9b05550
• Chen, Yen-Chun and Lin, Wei-Hsiang, et el. (2020) Direct growth of mm-size twisted bilayer graphene by plasma-enhanced chemical vapor deposition; Carbon; Vol. 156; 212-224; 10.1016/j.carbon.2019.09.052
• Tsai, Shin-Hung and Lei, Sidong, et el. (2019) Interfacial States and Fano-Feshbach Resonance in Graphene-Silicon Vertical Junction; Nano Letters; Vol. 19; No. 10; 6765-6771; 10.1021/acs.nanolett.9b01658
• Han, Chih-Pin and Chen, Chih-Jung, et el. (2019) Pressure-Controlled Chemical Vapor Deposition of Graphene as Catalyst for Solar Hydrogen Evolution Reaction; Catalysis Today; Vol. 335; 395-401; 10.1016/j.cattod.2019.01.001
• Yeh, Nai-Chang and Hsu, Chen-Chih, et el. (2019) Single-step growth of graphene and graphene-based nanostructures by plasma-enhanced chemical vapour deposition; Nanotechnology; Vol. 30; No. 16; Art. No. 162001; 10.1088/1361-6528/aafdbf
• Yeh, Nai-Chang (2019) Spectroscopic Studies of Quasiparticle Low-Energy Excitations in Cuprate and Iron-Based High-Temperature Superconductors; ISBN 978-981-3270-78-7; Endless Quests: Theory, Experiments And Applications Of Frontiers Of Superconductivity; 83-154; 10.1142/9789813270794_0002
• Han, Chih-Pin and Veeramani, Vediyappan, et el. (2018) Vertically-aligned graphene nanowalls grown via plasma-enhanced chemical vapor deposition as a binder-free cathode in Li-O_2 batteries; Nanotechnology; Vol. 29; No. 50; Art. No. 505401; 10.1088/1361-6528/aae362
• Yeh, Nai-Chang (2018) The Legacy of Professor Mildred S. Dresselhaus; Chem; Vol. 4; No. 9; 1997-2003; 10.1016/j.chempr.2018.08.013
• Hsu, Chen-Chih and Bagley, Jacob D., et el. (2018) High-yield single-step catalytic growth of graphene nanostripes by plasma enhanced chemical vapor deposition; Carbon; Vol. 129; 527-536; 10.1016/j.carbon.2017.12.058
• Bagley, Jacob and Hsu, Chen-Chih, et el. (2018) High yield bottom-up PECVD synthesis of graphene nanoribbons and their application in supercapacitors
• Tseng, Wei-Shiuan and Jao, Meng-Huan, et el. (2017) Stabilization of hybrid perovskite CH_3NH_3PbI_3 thin films by graphene passivation; Nanoscale; Vol. 9; No. 48; 19227-19235; 10.1039/c7nr06510h
• Yeh, Nai-Chang (2017) Fractionalized quantum excitations in correlated two-dimensional topological phases; Reviews in Physics; Vol. 2; 1-2; 10.1016/j.revip.2017.02.001
• Yeh, Nai-Chang (2017) Mildred S. Dresselhaus (1930–2017): A fierce force of harmony; Proceedings of the National Academy of Sciences of the United States of America; Vol. 114; No. 29; 7478-7479; PMCID PMC5530714; 10.1073/pnas.1710692114
• Lin, Wei-Hsiang and Brar, Victor W., et el. (2017) Atomic-scale Structural and Chemical Characterization of Hexagonal Boron Nitride Layers Synthesized at the Wafer-Scale with Monolayer Thickness Control; Chemistry of Materials; Vol. 29; No. 11; 4700-4707; 10.1021/acs.chemmater.7b00183
• Feng, Zhenjie and Yin, Xunqing, et el. (2016) Mn-doping induced ferromagnetism and enhanced superconductivity in Bi_(4−x)Mn_xO_4S_3 (0.075 ≤ x ≤ 0.15); Physical Review B; Vol. 94; No. 6; Art. No. 064522; 10.1103/PhysRevB.94.064522
• Chang, J.-K. and Hsu, C.-C., et el. (2016) Spectroscopic studies of the physical origin of environmental aging effects on doped graphene; Journal of Applied Physics; Vol. 119; No. 23; Art. No. 235301; 10.1063/1.4953815
• Yeh, N.-C. and Hsu, C.-C., et el. (2016) Nanoscale strain engineering of graphene and graphene-based devices; Acta Mechanica Sinica; Vol. 32; No. 3; 497-509; 10.1007/s10409-015-0548-9
• Chen, C.-C. and Teague, M. L., et el. (2015) Magnetism-induced massive Dirac spectra and topological defects in the surface state of Cr-doped Bi_2Se_3-bilayer topological insulators; New Journal of Physics; Vol. 17; No. 11; Art. No. 113042; 10.1088/1367-2630/17/11/113042
• Boyd, D. A. and Lin, Wei-Hsiang, et el. (2015) Single-step deposition of high mobility graphene at reduced temperatures; Nature Communications; Vol. 6; No. 3; Art. No. 6620; 10.1038/ncomms7620
• Yeh, Nai-Chang (2013) Nanotechnology for electronics & photonics; Technovation; Vol. 33; No. 4-5; 108-108; 10.1016/j.technovation.2013.03.008
• Lang, Murong and He, Liang, et el. (2013) Competing Weak Localization and Weak Antilocalization in Ultrathin Topological Insulators; Nano Letters; Vol. 13; No. 1; 48-53; 10.1021/nl303424n
• Yeh, N.-C. and Teague, M. L., et el. (2013) Scanning Tunneling Spectroscopic Studies of the Low-Energy Quasiparticle Excitations in Cuprate Superconductors; Journal of Superconductivity and Novel Magnetism; Vol. 26; No. 1; 65-70; 10.1007/s10948-012-1706-y
• Yeh, N.-C. and Teague, M. L., et el. (2012) Comparative studies of the scanning tunneling spectra in cuprate and iron-arsenide superconductors; 10.1088/1742-6596/400/2/022140
• Teague, M. L. and Chu, H., et el. (2012) Observation of Fermi-energy dependent unitary impurity resonances in a strong topological insulator Bi_2Se_3 with scanning tunneling spectroscopy; Solid State Communications; Vol. 152; No. 9; 747-751; 10.1016/j.ssc.2012.01.041
• Yeh, N.-C. and Teague, M. L., et el. (2012) Scanning Tunnelling Spectroscopic Studies of Dirac Fermions in Graphene and Topological Insulators; EPJ Web of Conferences; Vol. 23; Art. No. 00021; 10.1051/epjconf/20122300021
• He, Liang and Xiu, Faxian, et el. (2012) Surface-Dominated Conduction in a 6 nm thick Bi_2Se_3 Thin Film; Nano Letters; Vol. 12; No. 3; 1486-1490; 10.1021/nl204234j
• Yeh, N.-C. and Teague, M.-L., et el. (2011) Strain-induced pseudo-magnetic fields and charging effects on CVD-grown graphene; Surface Science; Vol. 605; No. 17-18; 1649-1656; 10.1016/j.susc.2011.03.025
• Yeh, Nai-Chang and Teague, Marcus L., et el. (2011) Nano-Scale Strain-Induced Giant Pseudo-Magnetic Fields and Charging Effects in CVD-Grown Graphene on Copper; ECS Transactions; Vol. 35; No. 3; 161-172; 10.1149/1.3569908
• Teague, M. L. and Drayna, G. K., et el. (2011) Measurement of a Sign-Changing Two-Gap Superconducting Phase in Electron-Doped Ba(Fe_(1-x)Co_x)_2As_2 Single Crystals Using Scanning Tunneling Spectroscopy; Physical Review Letters; Vol. 106; No. 8; Art. No. 087004; 10.1103/PhysRevLett.106.087004
• Hughes, C. R. and Shi, J., et el. (2010) Spin-polarized tunneling spectroscopic studies of the intrinsic heterogeneity and pseudogap phenomena in colossal magnetoresistive manganite La_(0.7)Ca_(0.3)MnO_3; Physical Review B; Vol. 82; No. 13; Art. No. 134441; 10.1103/PhysRevB.82.134441
• Yeh, N.-C. and Beyer, A. D., et el. (2010) Spectroscopic Evidence for Competing Order-Induced Pseudogap Phenomena and Unconventional Low-Energy Excitations in High-T_c Cuprate Superconductors; Journal of Superconductivity and Novel Magnetism; Vol. 23; No. 5; 757-765; 10.1007/s10948-010-0748-2
• Yeh, Nai-Chang (2010) A Journey of No Returns and No Regrets; Kaohsiung Journal of Medical Sciences; Vol. 26; No. 6; S17-S21; 10.1016/S1607-551X(10)70053-X
• Yeh, N.-C. and Teague, M.-L., et el. (2010) Scanning Tunneling Spectroscopic Studies of the Effects of Dielectrics and Metallic Substrates on the Local Electronic Characteristics of Graphene; ECS Transactions; Vol. 28; No. 5; 115-123; 10.1149/1.3367943
• Yeh, N.-C. and Beyer, A. D. (2009) Unconventional low-energy excitations of cuprate superconductors; International Journal of Modern Physics B; Vol. 23; No. 22; 4543-4577; 10.1142/S021797920905403X
• Beyer, A. D. and Grinolds, M. S., et el. (2009) Scanning tunneling spectroscopic evidence for magnetic-field-induced microscopic orders in the high-T_c superconductor YBa_2Cu_3O_(7-δ); Europhysics Letters; Vol. 87; No. 3; Art. No. 37005; 10.1209/0295-5075/87/37005
• Teague, M. L. and Lai, A. P., et el. (2009) Evidence for Strain-Induced Local Conductance Modulations in Single-Layer Graphene on SiO_2; Nano Letters; Vol. 9; No. 7; 2542-2546; 10.1021/nl9005657
• Yu, B.-L. and Wang, J. C. F., et el. (2009) Possible competing order-induced Fermi arcs in cuprate superconductors; Solid State Communications; Vol. 149; No. 7-8; 261-265; 10.1016/j.ssc.2008.12.018
• Teague, M. L. and Beyer, A. D., et el. (2009) Observation of vortices and hidden pseudogap from scanning tunneling spectroscopic studies of the electron-doped cuprate superconductor Sr0.9La0.1CuO2; Europhysics Letters; Vol. 85; No. 1; Art. No. 17004; 10.1209/0295-5075/85/17004
• Beyer, A. D. and Zapf, V. S., et el. (2007) Macroscopic evidence for quantum criticality and field-induced quantum fluctuations in cuprate superconductors; Physical Review B; Vol. 76; No. 14; Art. No. 140506(R); 10.1103/PhysRevB.76.140506
• Yeh, N.-C. and Chen, C. T., et el. (2007) Investigating the Physical Origin of Unconventional Low-Energy Excitations and Pseudogap Phenomena in Cuprate Superconductors; Chinese Journal of Physics; Vol. 45; No. 2-II; 263-272
• Yeh, N.-C. and Strayer, D. M. (2006) Reply to "Comment on 'Microwave vortex dissipation of superconducting Nd-Ce-Cu-O epitaxial films in high magnetic fields'"; Physical Review B; Vol. 74; No. 6; Art. No. 066502; 10.1103/PhysRevB.74.066502
• Yeh, N.-C. and Chen, C.-T., et el. (2005) Experimental investigation of the competing orders and quantum criticality in hole- and electron-doped cuprate superconductors; Chinese Journal of Physics; Vol. 43; No. 3-II; 505-514
• Zapf, V. S. and Yeh, N.-C., et el. (2005) Dimensionality of superconductivity and vortex dynamics in the infinite-layer cuprate Sr0.9M0.1CuO2 (M=La,Gd); Physical Review B; Vol. 71; No. 13; Art. No. 134526; 10.1103/PhysRevB.71.134526
• Yeh, N.-C. and Chen, C.-T., et el. (2005) Quasiparticle spectroscopy and high-field phase diagrams of cuprate superconductors - An investigation of competing orders and quantum criticality; International Journal of Modern Physics B; Vol. 19; No. 1-3; 285-294; 10.1142/S0217979205028426
• Yeh, N.-C. and Chen, C -T., et el. (2004) Experimental investigation of the asymmetric spectroscopic characteristics of electron- and hole-doped cuprates; Physica C; Vol. 408-41; 792-793; 10.1016/j.physc.2004.03.133
• Chen, C.-T. and Yeh, N.-C. (2003) Collective modes and quasiparticle interference on the local density of states of cuprate superconductors; Physical Review B; Vol. 68; No. 22; Art. No. 220505; 10.1103/PhysRevB.68.220505
• Yeh, N.-C. and Chen, C.-T. (2003) Non-universal pairing symmetry and pseudogap phenomena in hole- and electron-doped cuprate superconductors; International Journal of Modern Physics B; Vol. 17; No. 18-20; 3575-3581; 10.1142/S0217979203021435
• Yeh, N.-C. and Chen, C.-T., et el. (2003) Scanning tunneling spectroscopic studies of the pairing state of cuprate superconductors; Journal of Low Temperature Physics; Vol. 131; No. 3-4; 435-444; 10.1023/A:1022934832360
• Yeh, N.-C. and Chen, C.-T., et el. (2002) Local and global effects of quantum impurities on the quasi-particle tunneling spectra of p-type and n-type cuprate superconductors; ISBN 9780819445797; Superconducting and Related Oxides: Physics and Nanoengineering V; 182-194; 10.1117/12.452324
• Chen, C.-T. and Seneor, P., et el. (2002) Strongly correlated s-wave superconductivity in the N-type infinite-layer cuprate; Physical Review Letters; Vol. 88; No. 22; Art. No. 227002; 10.1103/PhysRevLett.88.227002
• Fu, C.-C. and Huang, Z., et el. (2002) Spin-polarized quasiparticle transport in cuprate superconductors; Physical Review B; Vol. 65; No. 22; Art. No. 224516; 10.1103/PhysRevB.65.224516
• Seneor, P. and Chen, C.-T., et el. (2002) Spectroscopic evidence for anisotropic s-wave pairing symmetry in MgB_2; Physical Review B; Vol. 65; No. 1; Art. No. 012505; 10.1103/PhysRevB.65.012505
• Yeh, Nai-Chang (2002) Recent Advances in High-Temperature Superconductivity; Bulletin of Associations of Asia Pacific Physical Societies; Vol. 12; No. 2; 2-20; 10.48550/arXiv.0210656
• Yeh, N.-C. and Chen, C.-T., et el. (2001) Spatial homogeneity and doping dependence of quasiparticle tunneling spectra in cuprate superconductors; Physica C; Vol. 364-36; 450-457; 10.48550/arXiv.0103205
• Yeh, N.-C. and Chen, C.-T., et el. (2001) Evidence of doping-dependent pairing symmetry in cuprate superconductors; Physical Review Letters; Vol. 87; No. 8; Art. No. 087003; 10.1103/PhysRevLett.87.087003
• Yeh, N.-C. and Fu, C.-C., et el. (2000) Pairing symmetry and spin-polarized quasiparticle transport in high-temperature superconducting cuprates; ISBN 9780819436849; Superconducting and Related Oxides: Physics and Nanoengineering IV; 60-74; 10.1117/12.397825
• Boris, A. V. and Kovaleva, N. N., et el. (1999) Infrared studies of a La_(0.67)Ca_(0.33)MnO_3 single crystal: Optical magnetoconductivity in a half-metallic ferromagnet; Physical Review B; Vol. 59; No. 2; R697-R700; 10.1103/PhysRevB.59.R697
• Maurer, S. M. and Yeh, N.-C., et el. (1998) Numerical calculation of the vortex-columnar-defect interaction and critical currents in extreme type-II superconductors - a two-dimensional model based on the Ginzburg-Landau approximation; Journal of Physics: Condensed Matter; Vol. 10; No. 33; 7429-7443; 10.1088/0953-8984/10/33/012
• Beam, D. A. and Yeh, N.-C., et el. (1998) Universal vortex-state Hall conductivity of YBa2Cu3O7 single crystals with differing correlated disorder; Journal of Physics: Condensed Matter; Vol. 10; No. 26; 5955-5964; 10.1088/0953-8984/10/26/020
• Samoilov, A. V. and Yeh, N.-C., et el. (1998) Electron localization effects on the low-temperature high-field magnetoresistivity of three-dimensional amorphous superconductors; Physical Review B; Vol. 57; No. 2; 1206-1213; 10.1103/PhysRevB.57.1206
• Jiang, W. and Yeh, N.-C., et el. (1997) Current-driven vortex dynamics in untwinned superconducting single crystals; Journal of Physics: Condensed Matter; Vol. 9; No. 38; 8085-8100; 10.1088/0953-8984/9/38/014
• Yeh, N.-C. (1997) The science and technology of condensed matter physics - from atomic imaging to space research; Chinese Journal of Physics; Vol. 35; No. 4; 373-385
• Yeh, N.-C. and Vasquez, R. P., et el. (1997) Effects of lattice distortion and Jahn–Teller coupling on the magnetoresistance of La_(0.7)Ca_(0.3)MnO_3 and La_(0.5)Ca_(0.5)CoO_3 epitaxial films; Journal of Physics: Condensed Matter; Vol. 9; No. 18; 3713-3721; 10.1088/0953-8984/9/18/010
• Maurer, S. M. and Yeh, N.-C., et el. (1996) Vortex pinning by cylindrical defects in type-II superconductors: Numerical solutions to the Ginzburg-Landau equations; Physical Review B; Vol. 54; No. 21; 15372-15379; 10.1103/PhysRevB.54.15372
• Yeh, N.-C. and Reed, D. S., et el. (1995) Effects of static disorder on vortex phases and dynamics of type-II superconductors — a scaling approach; ISBN 978-4-431-68537-1; Advances in Superconductivity VII; 455-460; 10.1007/978-4-431-68535-7_100
• Jiang, W. and Yeh, N.-C., et el. (1994) Evidence of a Bose-glass transition in superconducting YBa2Cu3O7 single crystals with columnar defects; Physical Review Letters; Vol. 72; No. 4; 550-553; 10.1103/PhysRevLett.72.550
• Jiang, W. and Yeh, N.-C., et el. (1993) Vortex-solid melting and depinning in superconducting Y-Ba-Cu-O single crystals irradiated by 3-MeV protons; Physical Review B; Vol. 47; No. 13; 8308-8311; 10.1103/PhysRevB.47.8308
• Vasquez, Richard P. and Brain, Ruth A., et el. (1992) Epitaxial C₆₀ Film on Si(111) by XPS; Surface Science Spectra; Vol. 1; No. 2; 242-245; 10.1116/1.1247645
• Jiang, W. and Yeh, N.-C., et el. (1992) Effects of Controlled Defects on the Vortex-Solid Melting Transition of Y-Ba-Cu-O Single Crystals; ISBN 1-55899-170-0; Layered Superconductors : fabrication, properties, and applications; 789-794; 10.1557/PROC-275-789