Niu Q, Ao P, Thouless DJ. From Feynman's wave function to the effective theory of vortex dynamics. Physical Review Letters. 1994;(11):1706-1709.

Niu Q. Quantized density response in insulators. Physical Review B. 1994;(19):13554-13559.

Shih W-K, Niu Q. Nonadiabatic particle transport in a one-dimensional electron system. Physical Review B. 1994;(16):11902-11910.

Ao P, Niu Q, Thouless DJ. Implications of adiabatic phases for a vortex in a superconductor film. Physica B: Physics of Condensed Matter. 1994;(PART 2):1453-1454.

Niu Q, Wang T, Kirk WP. Deep centers as atomic-size quantum dot electron turnstiles. Superlattices and Microstructures. 1994;(4):399-401.

Chang MC, Niu Q. Electron band structure in a two-dimensional periodic magnetic field. Physical Review B. 1994;(15):10843-10850.

Zhao X-G, Niu Q. Localization of band electrons in dc-ac electric fields. Physics Letters A. 1994;(1-2):181-184.

Niu Q, Liu C. Nonadiabatic heating in electron turnstiles and pumps. CPEM Digest (Conference on Precision Electromagnetic Measurements). 1994:372-373.