H. C. Liu

1.3k total citations · 1 hit paper
18 papers, 846 citations indexed

About

H. C. Liu is a scholar working on Electrical and Electronic Engineering, Spectroscopy and Atomic and Molecular Physics, and Optics. According to data from OpenAlex, H. C. Liu has authored 18 papers receiving a total of 846 indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Electrical and Electronic Engineering, 12 papers in Spectroscopy and 10 papers in Atomic and Molecular Physics, and Optics. Recurrent topics in H. C. Liu's work include Spectroscopy and Laser Applications (12 papers), Photonic and Optical Devices (9 papers) and Terahertz technology and applications (7 papers). H. C. Liu is often cited by papers focused on Spectroscopy and Laser Applications (12 papers), Photonic and Optical Devices (9 papers) and Terahertz technology and applications (7 papers). H. C. Liu collaborates with scholars based in China, United States and Switzerland. H. C. Liu's co-authors include Jérôme Faist, Gustavo Villares, Andreas Hugi, Stéphane Blaser, Juncheng Cao, Zhiyong Tan, Renjian Zhang, Xu Guo, A. G. U. Perera and E. H. Linfield and has published in prestigious journals such as Nature, Advanced Materials and Journal of Applied Physics.

In The Last Decade

H. C. Liu

14 papers receiving 788 citations

Hit Papers

1 papers align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Mid-infrared frequency comb based on a quantum cascade laser

2012 510 citations Andreas Hugi, Gustavo Villares et al. Nature profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
H. C. Liu China	11	665	541	529	96	95	18	846
Marcel Graf Switzerland	11	474 0.7×	433 0.8×	462 0.9×	69 0.7×	69 0.7×	15	680
M.-C. Amann Germany	13	578 0.9×	330 0.6×	297 0.6×	45 0.5×	95 1.0×	36	686
Shenqiang Zhai China	14	646 1.0×	291 0.5×	513 1.0×	120 1.3×	153 1.6×	135	815
Filippos Kapsalidis Switzerland	10	378 0.6×	286 0.5×	260 0.5×	90 0.9×	40 0.4×	39	521
Joshua R. Freeman United Kingdom	17	815 1.2×	414 0.8×	620 1.2×	100 1.0×	159 1.7×	83	983
Kazuue Fujita Japan	20	763 1.1×	256 0.5×	742 1.4×	63 0.7×	315 3.3×	60	934
Christopher Bonzon Switzerland	12	432 0.6×	286 0.5×	290 0.5×	71 0.7×	85 0.9×	23	526
David Burghoff United States	18	960 1.4×	855 1.6×	875 1.7×	35 0.4×	105 1.1×	52	1.2k
Augustinas Vizbaras Germany	10	465 0.7×	215 0.4×	283 0.5×	48 0.5×	72 0.8×	40	510
Michael Krall Austria	12	398 0.6×	265 0.5×	238 0.4×	136 1.4×	118 1.2×	22	589

Countries citing papers authored by H. C. Liu

Since Specialization

Citations

This map shows the geographic impact of H. C. Liu's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by H. C. Liu with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites H. C. Liu more than expected).

Fields of papers citing papers by H. C. Liu

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by H. C. Liu. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by H. C. Liu. The network helps show where H. C. Liu may publish in the future.

Co-authorship network of co-authors of H. C. Liu

This figure shows the co-authorship network connecting the top 25 collaborators of H. C. Liu. A scholar is included among the top collaborators of H. C. Liu based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with H. C. Liu. H. C. Liu is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

18 of 18 papers shown

Liu, H. C., et al.. (2025). Ultra-wideband switchable multifunctional terahertz hypersurfaces based on graphene and VO₂. Physica Scripta. 100(8). 85513–85513.

Liu, H. C., et al.. (2025). Terahertz full-space metasurface based on thermally induced phase transition: dynamic wavefront manipulation and multifunctional applications. Physica Scripta. 100(12). 125538–125538.

Amanti, Maria I., A. Bismuto, E. Gini, et al.. (2014). Injection locking of mid‐infrared quantum cascade laser at 14 GHz, by direct microwave modulation. Laser & Photonics Review. 8(3). 443–449. 34 indexed citations

Lao, Yan-Feng, A. G. U. Perera, Lianhe Li, et al.. (2014). Tunable hot-carrier photodetection beyond the bandgap spectral limit. Nature Photonics. 8(5). 412–418. 67 indexed citations

Pitigala, P. K. D. D. P., Yan-Feng Lao, A. G. U. Perera, et al.. (2014). Performance improvements of a split-off band infra-red detector using a graded barrier. Journal of Applied Physics. 115(6). 2 indexed citations

Tan, Zhiyong, Tao Zhou, Juncheng Cao, & H. C. Liu. (2013). Terahertz Imaging With Quantum-Cascade Laser and Quantum-Well Photodetector. IEEE Photonics Technology Letters. 25(14). 1344–1346. 13 indexed citations

Hugi, Andreas, Gustavo Villares, Stéphane Blaser, H. C. Liu, & Jérôme Faist. (2013). Dual-comb Spectrometer Based on Mid-IR Quantum Cascade Laser Frequency Combs. 416. JM3K.2–JM3K.2. 1 indexed citations

Razavipour, Seyed Ghasem, E. Dupont, Saeed Fathololoumi, et al.. (2013). An indirectly pumped terahertz quantum cascade laser with low injection coupling strength operating above 150 K. Journal of Applied Physics. 113(20). 27 indexed citations

Perera, A. G. U., Yan-Feng Lao, P. K. D. D. P. Pitigala, et al.. (2013). Hot-carrier photodetector beyond spectral limit. 49. 348–349.

10.

Lao, Yan-Feng, A. G. U. Perera, Lianhe Li, et al.. (2013). Direct observation of spin-orbit splitting and phonon-assisted optical transitions in the valence band by internal photoemission spectroscopy. Physical Review B. 88(20). 5 indexed citations

11.

Fathololoumi, Saeed, E. Dupont, Z. R. Wasilewski, et al.. (2013). Effect of oscillator strength and intermediate resonance on the performance of resonant phonon-based terahertz quantum cascade lasers. Journal of Applied Physics. 113(11). 37 indexed citations

12.

Hugi, Andreas, Gustavo Villares, Stéphane Blaser, H. C. Liu, & Jérôme Faist. (2012). Mid-infrared frequency comb based on a quantum cascade laser. Nature. 492(7428). 229–233. 510 indexed citations breakdown →

13.

Cao, Juncheng, Tao Zhou, Zhiyong Tan, et al.. (2012). Terahertz semiconductor quantum devices and their applications. 1–2.

14.

Guo, Xu, Juncheng Cao, Renjian Zhang, Zhiyong Tan, & H. C. Liu. (2012). Recent Progress in Terahertz Quantum-Well Photodetectors. IEEE Journal of Selected Topics in Quantum Electronics. 19(1). 8500508–8500508. 58 indexed citations

15.

Zhou, Tao, Renjian Zhang, Xuguang Guo, et al.. (2012). Terahertz Imaging With Quantum-Well Photodetectors. IEEE Photonics Technology Letters. 24(13). 1109–1111. 15 indexed citations

16.

Hinds, Sean, M. Buchanan, R. Dudek, et al.. (2011). Near‐Room‐Temperature Mid‐Infrared Quantum Well Photodetector. Advanced Materials. 23(46). 5536–5539. 16 indexed citations

17.

Zhang, Renjian, Xuguang Guo, Juncheng Cao, & H. C. Liu. (2011). Near field and cavity effects on coupling efficiency of one-dimensional metal grating for terahertz quantum well photodetectors. Journal of Applied Physics. 109(7). 25 indexed citations

18.

Tan, Zhiyong, Yanling Han, Rong Zhang, et al.. (2011). Wireless communication demonstration at 4.1 THz using quantum cascade laser and quantum well photodetector. Electronics Letters. 47(17). 1002–1004. 36 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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