Vol. 108
Latest Volume
All Volumes
PIERB 117 [2026] PIERB 116 [2026] PIERB 115 [2025] PIERB 114 [2025] PIERB 113 [2025] PIERB 112 [2025] PIERB 111 [2025] PIERB 110 [2025] PIERB 109 [2024] PIERB 108 [2024] PIERB 107 [2024] PIERB 106 [2024] PIERB 105 [2024] PIERB 104 [2024] PIERB 103 [2023] PIERB 102 [2023] PIERB 101 [2023] PIERB 100 [2023] PIERB 99 [2023] PIERB 98 [2023] PIERB 97 [2022] PIERB 96 [2022] PIERB 95 [2022] PIERB 94 [2021] PIERB 93 [2021] PIERB 92 [2021] PIERB 91 [2021] PIERB 90 [2021] PIERB 89 [2020] PIERB 88 [2020] PIERB 87 [2020] PIERB 86 [2020] PIERB 85 [2019] PIERB 84 [2019] PIERB 83 [2019] PIERB 82 [2018] PIERB 81 [2018] PIERB 80 [2018] PIERB 79 [2017] PIERB 78 [2017] PIERB 77 [2017] PIERB 76 [2017] PIERB 75 [2017] PIERB 74 [2017] PIERB 73 [2017] PIERB 72 [2017] PIERB 71 [2016] PIERB 70 [2016] PIERB 69 [2016] PIERB 68 [2016] PIERB 67 [2016] PIERB 66 [2016] PIERB 65 [2016] PIERB 64 [2015] PIERB 63 [2015] PIERB 62 [2015] PIERB 61 [2014] PIERB 60 [2014] PIERB 59 [2014] PIERB 58 [2014] PIERB 57 [2014] PIERB 56 [2013] PIERB 55 [2013] PIERB 54 [2013] PIERB 53 [2013] PIERB 52 [2013] PIERB 51 [2013] PIERB 50 [2013] PIERB 49 [2013] PIERB 48 [2013] PIERB 47 [2013] PIERB 46 [2013] PIERB 45 [2012] PIERB 44 [2012] PIERB 43 [2012] PIERB 42 [2012] PIERB 41 [2012] PIERB 40 [2012] PIERB 39 [2012] PIERB 38 [2012] PIERB 37 [2012] PIERB 36 [2012] PIERB 35 [2011] PIERB 34 [2011] PIERB 33 [2011] PIERB 32 [2011] PIERB 31 [2011] PIERB 30 [2011] PIERB 29 [2011] PIERB 28 [2011] PIERB 27 [2011] PIERB 26 [2010] PIERB 25 [2010] PIERB 24 [2010] PIERB 23 [2010] PIERB 22 [2010] PIERB 21 [2010] PIERB 20 [2010] PIERB 19 [2010] PIERB 18 [2009] PIERB 17 [2009] PIERB 16 [2009] PIERB 15 [2009] PIERB 14 [2009] PIERB 13 [2009] PIERB 12 [2009] PIERB 11 [2009] PIERB 10 [2008] PIERB 9 [2008] PIERB 8 [2008] PIERB 7 [2008] PIERB 6 [2008] PIERB 5 [2008] PIERB 4 [2008] PIERB 3 [2008] PIERB 2 [2008] PIERB 1 [2008]
2024-10-23
Implementation of Fractal Metamaterial Inspired Antenna for Multi-Standard Wireless Applications
By
Progress In Electromagnetics Research B, Vol. 108, 121-137, 2024
Abstract
In this article, a fractal slotted metamaterial inspired multiband antenna for wireless communication applications is presented. The proposed structure incorporates the fractal formation of a radiating patch attached with metamaterial SRR cell and rectangular slotted partial ground plane to cover multiple wireless standards. The antenna is printed on FR4 epoxy substrate material having the thickness of 1.6 mm and relative permittivity of 4.4. The antenna has compactness in size as 37×22×1.6 mm3 and achieves five wireless communication modes, including S band (2.4 GHz; WLAN: IEEE 802.11g), S band (3.65 GHz; WiMAX: IEEE 802.16e), C band (5.0/5.8 GHz; WLAN: IEEE 802.11a/j), X-Band (Satellite communication, radar, terrestrial broadband, space communication), 5G NR bands (n41: 2.496-2.690 GHz, n46: 5.15-5.925 GHz, n47: 5.855-5.925 GHz, n53: 2.483-2.495 GHz, n102: 5.925-6.425), and Lower Ku band (Molecular rational spectroscopy). The antenna also showcases consistent radiation characteristics, gain, and efficiency across resonant bands crucial for obtained resonant bands regarding multi-standard wireless applications. It attains an optimized peak gain of 4.38 dBi and a radiation efficiency of 86.23%.
Citation
Hareetaa Mallani, Archana Agrawal, and Ritesh Kumar Saraswat, "Implementation of Fractal Metamaterial Inspired Antenna for Multi-Standard Wireless Applications," Progress In Electromagnetics Research B, Vol. 108, 121-137, 2024.
doi:10.2528/PIERB24072905
References

1. Elsheakh, Dalia Mohammed Nasha, Hala Elsadek, Esmat A. F. Abdallah, Magdy F. Iskander, and Hadia El-Hennawy, "Reconfigurable single and multiband inset feed microstrip patch antenna for wireless communication devices," Progress In Electromagnetics Research C, Vol. 12, 191-201, 2010.        Google Scholar

2. Bakariya, Pritam Singh, Santanu Dwari, Manas Sarkar, and Mrinal Kanti Mandal, "Proximity-coupled microstrip antenna for bluetooth, WiMAX, and WLAN applications," IEEE Antennas and Wireless Propagation Letters, Vol. 14, 755-758, 2014.        Google Scholar

3. Wu, Rui-Zhi, Peng Wang, Qiang Zheng, and Rui-Peng Li, "Compact CPW‐fed triple‐band antenna for diversity applications," Electronics Letters, Vol. 51, No. 10, 735-736, 2015.        Google Scholar

4. Mehdipour, Aidin, Abdel-Razik Sebak, Christopher W. Trueman, and Tayeb A. Denidni, "Compact multiband planar antenna for 2.4/3.5/5.2/5.8-GHz wireless applications," IEEE Antennas and Wireless Propagation Letters, Vol. 11, 144-147, 2012.        Google Scholar

5. Cao, Y. F., S. W. Cheung, and T. I. Yuk, "A multiband slot antenna for GPS/WiMAX/WLAN systems," IEEE Transactions on Antennas and Propagation, Vol. 63, No. 3, 952-958, 2015.        Google Scholar

6. Saraswat, Ritesh Kumar and Mithilesh Kumar, "A frequency band reconfigurable UWB antenna for high gain applications," Progress In Electromagnetics Research B, Vol. 64, 29-45, 2015.        Google Scholar

7. Samsuzzaman, M., T. Islam, N. H. Abd Rahman, Mohammad Rashed Iqbal Faruque, and J. S. Mandeep, "Compact modified swastika shape patch antenna for WLAN/WiMAX applications," International Journal of Antennas and Propagation, Vol. 2014, No. 1, 825697, 2014.        Google Scholar

8. Ali, Tanweer, Mohammad Muzammil Khaleeq, Sameena Pathan, and Rajashekhar C. Biradar, "A multiband antenna loaded with metamaterial and slots for GPS/WLAN/WiMAX applications," Microwave and Optical Technology Letters, Vol. 60, No. 1, 79-85, 2018.        Google Scholar

9. Chaurasia, Praveen, Binod Kumar Kanaujia, Santanu Dwari, and Mukesh Kumar Khandelwal, "Design and analysis of seven-bands-slot-antenna with small frequency ratio for different wireless applications," AEU --- International Journal of Electronics and Communications, Vol. 99, 100-109, 2019.        Google Scholar

10. Zhu, J. and G. V. Eleftheriades, "Dual-band metamaterial-inspired small monopole antenna for WiFi applications," Electronics Letters, Vol. 45, No. 22, 1104-1106, 2009.        Google Scholar

11. Xu, He-Xiu, Guang-Ming Wang, Yuan-Yuan Lv, Mei-Qing Qi, Xi Gao, and Shuo Ge, "Multifrequency monopole antennas by loading metamaterial transmission lines with dual-shunt branch circuit," Progress In Electromagnetics Research, Vol. 137, 703-725, 2013.        Google Scholar

12. Alam, T., M. Samsuzzaman, M. R. I. Faruque, and M. T. Islam, "A metamaterial unit cell inspired antenna for mobile wireless applications," Microwave and Optical Technology Letters, Vol. 58, No. 2, 263-267, 2016.        Google Scholar

13. Daniel, S., R. Pandeeswari, and S. Raghavan, "A compact metamaterial loaded monopole antenna with offset-fed microstrip line for wireless applications," AEU --- International Journal of Electronics and Communications, Vol. 83, 88-94, 2018.        Google Scholar

14. Rao, M. Venkateswara, B. T. P. Madhav, T. Anilkumar, and B. Prudhvi Nadh, "Metamaterial inspired quad band circularly polarized antenna for WLAN/ISM/Bluetooth/WiMAX and satellite communication applications," AEU --- International Journal of Electronics and Communications, Vol. 97, 229-241, 2018.        Google Scholar

15. Anguera, Jaume, Carles Puente, Carmen Borja, and Jordi Soler, "Fractal shaped antennas: A review," Encyclopedia of RF and Microwave Engineering, 2005.        Google Scholar

16. Chen, Horng-Dean, Hui-Wen Yang, and Chow-Yen-Desmond Sim, "Single open-slot antenna for LTE/WWAN smartphone application," IEEE Transactions on Antennas and Propagation, Vol. 65, No. 8, 4278-4282, 2017.        Google Scholar

17. Lee, Sang Heun, Yohan Lim, Young Joong Yoon, Chang-Beom Hong, and Hyung-Il Kim, "Multiband folded slot antenna with reduced hand effect for handsets," IEEE Antennas and Wireless Propagation Letters, Vol. 9, 674-677, 2010.        Google Scholar

18. Yuan, Bo, Yazi Cao, and Gaofeng Wang, "A miniaturized printed slot antenna for six-band operation of mobile handsets," IEEE Antennas and Wireless Propagation Letters, Vol. 10, 854-857, 2011.        Google Scholar

19. Sharma, Sameer Kumar, Jai Deep Mulchandani, Devvrat Gupta, and Raghvendra Kumar Chaudhary, "Triple‐band metamaterial‐inspired antenna using FDTD technique for WLAN/WiMAX applications," International Journal of RF and Microwave Computer-Aided Engineering, Vol. 25, No. 8, 688-695, 2015.        Google Scholar

20. Ali, Tanweer and Rajashekhar C. Biradar, "A compact multiband antenna using λ/4 rectangular stub loaded with metamaterial for IEEE 802.11N and IEEE 802.16E," Microwave and Optical Technology Letters, Vol. 59, No. 5, 1000-1006, 2017.        Google Scholar

21. Kukreja, Jaspreet, Dilip Kumar Choudhary, and Raghvendra Kumar Chaudhary, "CPW fed miniaturized dual‐band short‐ended metamaterial antenna using modified split‐ring resonator for wireless application," International Journal of RF and Microwave Computer-Aided Engineering, Vol. 27, No. 8, e21123, 2017.        Google Scholar

22. Saraswat, Ritesh K. and Mithilesh Kumar, "A metamaterial hepta-band antenna for wireless applications with specific absorption rate reduction," International Journal of RF and Microwave Computer-Aided Engineering, Vol. 29, No. 10, e21824, 2019.        Google Scholar

23. Ali, Tanweer, Mohammad Saadh Aw, and Rajashekhar C. Biradar, "A fractal quad-band antenna loaded with L-shaped slot and metamaterial for wireless applications," International Journal of Microwave and Wireless Technologies, Vol. 10, No. 7, 826-834, 2018.        Google Scholar

24. Pandeeswari, Ramasamy and Singaravelu Raghavan, "Broadband monopole antenna with split ring resonator loaded substrate for good impedance matching," Microwave and Optical Technology Letters, Vol. 56, No. 10, 2388-2392, 2014.        Google Scholar

25. Arora, Chirag, Shyam Sundar Pattnaik, and Rudra Narayan Baral, "SRR inspired microstrip patch antenna array," Progress In Electromagnetics Research C, Vol. 58, 89-96, 2015.        Google Scholar

26. Rajeshkumar, V. and Singaravelu Raghavan, "SRR‐based polygon ring penta‐band fractal antenna for GSM/WLAN/WiMAX/ITU band applications," Microwave and Optical Technology Letters, Vol. 57, No. 6, 1301-1305, 2015.        Google Scholar

27. Elavarasi, C. and T. Shanmuganantham, "Multiband SRR loaded Koch star fractal antenna," Alexandria Engineering Journal, Vol. 57, No. 3, 1549-1555, 2018.        Google Scholar

28. Ahmad, B. H. and H. Nornikman, "Fractal microstrip antenna with Minkowski Island split ring resonator for broadband application," 2013 IEEE International RF and Microwave Conference (RFM), 214-218, Penang, Malaysia, Dec. 2013.

29. Hu, Jian-Rong and Jiu-Sheng Li, "Compact microstrip antennas using CSRR structure ground plane," Microwave and Optical Technology Letters, Vol. 56, No. 1, 117-120, 2014.        Google Scholar

30. Rajkumar, Rengasamy and Kommuri Usha Kiran, "A metamaterial inspired compact open split ring resonator antenna for multiband operation," Wireless Personal Communications, Vol. 97, 951-965, 2017.        Google Scholar

31. Saraswat, Ritesh Kumar and Mithilesh Kumar, "Miniaturized slotted ground UWB antenna loaded with metamaterial for WLAN and WiMAX applications," Progress In Electromagnetics Research B, Vol. 65, 65-80, 2016.        Google Scholar

32. Saraswat, Ritesh K. and Mithilesh Kumar, "A vertex-fed hexa-band frequency reconfigurable antenna for wireless applications," International Journal of RF and Microwave Computer-Aided Engineering, Vol. 29, No. 10, e21893, 2019.        Google Scholar

33. Liu, Wen-Chung, Chao-Ming Wu, and Yang Dai, "Design of triple-frequency microstrip-fed monopole antenna using defected ground structure," IEEE Transactions on Antennas and Propagation, Vol. 59, No. 7, 2457-2463, 2011.        Google Scholar

34. Singh, Sanjay, Atul Varshney, Vipul Sharma, Issa Tamer Elfergani, Chemseddine Zebiri, and Jonathan Rodriguez, "A compact off -set edge fed odd-symmetric hybrid fractal slotted antenna for UWB and space applications," Progress In Electromagnetics Research B, Vol. 102, 37-60, 2023.        Google Scholar

35. Computer simulation technology microwave studio (CST MWS), Retrieved from http://www.cst.co.

36. Sivia, Jagtar Singh, Amar Partap Singh Pharwaha, and Tara Singh Kamal, "Analysis and design of circular fractal antenna using artificial neural networks," Progress In Electromagnetics Research B, Vol. 56, 251-267, 2013.        Google Scholar

37. Chen, Hongsheng, Jingjing Zhang, Yang Bai, Yu Luo, Lixin Ran, Qin Jiang, and Jin Au Kong, "Experimental retrieval of the effective parameters of metamaterials based on a waveguide method," Optics Express, Vol. 14, No. 26, 12944-12949, 2006.        Google Scholar

38. Saha, Chinmoy and Jawad Y. Siddiqui, "Versatile CAD formulation for estimation of the resonant frequency and magnetic polarizability of circular split ring resonators," International Journal of RF and Microwave Computer-Aided Engineering, Vol. 21, No. 4, 432-438, 2011.        Google Scholar

39. Smith, D. R., Sheldon Schultz, P. Markoš, and C. M. Soukoulis, "Determination of effective permittivity and permeability of metamaterials from reflection and transmission coefficients," Physical Review B, Vol. 65, 195104-195109, 2002.        Google Scholar

40. Saraswat, Ritesh Kumar and Mithilesh Kumar, "A quad band metamaterial miniaturized antenna for wireless applications with gain enhancement," Wireless Personal Communications, Vol. 114, No. 4, 3595-3612, 2020.        Google Scholar

41. Saraswat, Ritesh Kumar and Mithilesh Kumar, "Implementation of hybrid fractal metamaterial inspired frequency band reconfigurable multiband antenna for wireless applications," International Journal of RF and Microwave Computer-Aided Engineering, Vol. 30, No. 9, e22315, 2020.        Google Scholar

42. Agrawal, Archana, Pramod Kumar Singhal, and Ankit Jain, "Design and optimization of a microstrip patch antenna for increased bandwidth," International Journal of Microwave and Wireless Technologies, Vol. 5, No. 4, 529-535, 2013.        Google Scholar

43. Puri, Isha and Archana Agrawal, "Bandwidth and gain increment of microstrip patch antenna with shifted elliptical slot," International Journal of Engineering Science and Technology, Vol. 3, No. 7, 5539-5545, 2011.        Google Scholar

44. Maheshwari, Shagun, Priyanka Jain, and Archana Agarwal, "CPW-fed wideband antenna with U-shaped ground plane," International Journal of Wireless and Microwave Technologies, Vol. 5, 25-31, 2014.        Google Scholar

45. Jain, Ankit and Archana Agrawal, "Design and optimization of a microstrip patch antenna for increased bandwidth," International Journal of Electronics and Communication Engineering, Vol. 7, No. 2, 191-195, 2014.        Google Scholar

46. Vaswani, J. and A. Agarwal, "A four port, dual band antenna for fifth generation mobile communication and WLAN services," Acta Technica Corviniensis --- Bulletin of Engineering, Vol. 13, No. 4, 73-76, 2020.        Google Scholar

47. Agarwal, Archana, Manish Kumar, Priyanka Jain, and Shagun Maheshwari, "Tapered circular microstrip antenna with modified ground plane for UWB communications," International Journal of Electronics and Communication Engineering & Technology (IJECET), Vol. 4, No. 3, 43-47, 2013.        Google Scholar

48. Vaswani, Jitendra, "Dual-band, dual-polarized two element slot antenna for fifth generation mobile devices," Turkish Journal of Computer and Mathematics Education (TURCOMAT), Vol. 12, No. 3, 4822-4830, 2021.        Google Scholar

49. Vaswani, Jitendra and Archana Agarwal, "Twelve-port dual-polarized dual-band mimo antenna for fifth-generation mobile devices," ICTACT Journal on Communication Technology, Vol. 12, No. 3, 2490-2497, 2021.        Google Scholar

50. Sim, Chow-Yen-Desmond, Heng-You Liu, and Ci-Jin Huang, "Wideband MIMO antenna array design for future mobile devices operating in the 5G NR frequency bands n77/n78/n79 and LTE band 46," IEEE Antennas and Wireless Propagation Letters, Vol. 19, No. 1, 74-78, 2020.        Google Scholar

51. Bharti, Gurpreet and Jagtar Singh Sivia, "A design of multiband nested square shaped ring fractal antenna with circular ring elements for wireless applications," Progress In Electromagnetics Research C, Vol. 108, 115-125, 2021.        Google Scholar

52. Kaur, Amandeep and Praveen Kumar Malik, "Multiband elliptical patch fractal and defected ground structures microstrip patch antenna for wireless applications," Progress In Electromagnetics Research B, Vol. 91, 157-173, 2021.        Google Scholar

53. Mu, Weidong, Zhonggen Wang, Ming Yang, Wenyan Nie, and Pan Wang, "A six-port slot antenna system with wideband and high-isolation for 5G NR bands," Progress In Electromagnetics Research M, Vol. 107, 105-118, 2022.        Google Scholar

54. Jiang, Jun-Yi and Hsin-Lung Su, "A wideband eight-element MIMO antenna array in 5G NR n77/78/79 and WLAN-5GHz bands for 5G smartphone applications," International Journal of Antennas and Propagation, Vol. 2022, No. 1, 8456936, 2022.        Google Scholar

55. Murugan, Chinnathambi and Thandapani Kavitha, "A compact four-element modified annular ring antenna for 5G applications," Progress In Electromagnetics Research C, Vol. 137, 169-183, 2023.        Google Scholar

56. Xue, Jincheng, Guolong Wang, Shuman Li, Zhuopeng Wang, and Quanquan Liang, "A metamaterial based dual-band UWB antenna design for 5G applications," Progress In Electromagnetics Research M, Vol. 127, 85-92, 2024.        Google Scholar

57. Neeshu, K. and Anjini Kumar Tiwary, "A compact, high gain ring metamaterial unit cell loaded triple band antenna for 5G application," Progress In Electromagnetics Research M, Vol. 124, 99-106, 2024.        Google Scholar

58. Garg, Supriya, Prince Jain, Sahil Garg, Bhavya Sharma, Gourab Das, Neha Sardana, Sanjeev Kumar, and Arun Kumar Singh, "Compact polarization-insensitive microwave metamaterial absorber with hepta-band characteristics," Physica Scripta, Vol. 99, No. 7, 075541, 2024.        Google Scholar

59. Samanta, Soumadri, Gaurav Pal Singh, Prince Jain, Arun Kumar Singh, and Neha Sardana, "Arm angle dependence of X-shaped metamaterial resonator in the X-band regime," International Conference on Fundamental and Industrial Research on Materials, 183-190, 2024.

60. Jain, Prince, Prabodh Kumar Sahoo, Aymen Dheyaa Khaleel, and Ahmed Jamal Abdullah Al-Gburi, "Enhanced prediction of metamaterial antenna parameters using advanced machine learning regression models," Progress In Electromagnetics Research C, Vol. 146, 1-12, 2024.        Google Scholar

61. Wang, Lin, Li Han, Wanlong Guo, Libo Zhang, Chenyu Yao, Zhiqingzi Chen, Yulu Chen, Cheng Guo, Kaixuan Zhang, Chia-Nung Kuo, et al. "Hybrid Dirac semimetal-based photodetector with efficient low-energy photon harvesting," Light: Science & Applications, Vol. 11, No. 1, 53, 2022.        Google Scholar

62. Viti, Leonardo, Antonio Politano, Kai Zhang, and Miriam Serena Vitiello, "Thermoelectric terahertz photodetectors based on selenium-doped black phosphorus flakes," Nanoscale, Vol. 11, No. 4, 1995-2002, 2019.        Google Scholar

63. Viti, Leonardo, Jin Hu, Dominique Coquillat, Wojciech Knap, Alessandro Tredicucci, Antonio Politano, and Miriam Serena Vitiello, "Black-phosphorus terahertz photodetectors," Adv. Mater., Vol. 27, 5567-5572, 2015.        Google Scholar

64. Zhang, Kaixuan, Li Han, Zhen Hu, Kening Xiao, Mengjie Jiang, Anqi Yu, Xiaokai Pan, Dong Wang, Libo Zhang, Xuyang Lv, et al. "Plasmonic architectures boosting performance in terahertz photodetectors," Laser & Photonics Reviews, Vol. 18, No. 6, 2301243, 2024.        Google Scholar

65. Xu, Wen, Tae Kyung Lee, Byeong-Seok Moon, Hongwei Song, Xu Chen, Byungae Chun, Young-Jin Kim, Sang Kyu Kwak, Peng Chen, and Dong-Hwan Kim, "Broadband plasmonic antenna enhanced upconversion and its application in flexible fingerprint identification," Advanced Optical Materials, Vol. 6, No. 6, 1701119, 2018.        Google Scholar

66. Park, Kyoung-Duck and Markus B. Raschke, "Polarization control with plasmonic antenna tips: A universal approach to optical nanocrystallography and vector-field imaging," Nano Letters, Vol. 18, No. 5, 2912-2917, 2018.        Google Scholar

67. Zak, Audrey, Michael A. Andersson, Maris Bauer, Jonas Matukas, Alvydas Lisauskas, Hartmut G. Roskos, and Jan Stake, "Antenna-integrated 0.6 THz FET direct detectors based on CVD graphene," Nano Letters, Vol. 14, No. 10, 5834-5838, 2014.        Google Scholar

68. Zhang, Kaixuan, Zhen Hu, Libo Zhang, Yulu Chen, Dong Wang, Mengjie Jiang, Gianluca D'Olimpio, Li Han, Chenyu Yao, Zhiqingzi Chen, et al. "Ultrasensitive self-driven terahertz photodetectors based on low-energy type-ii dirac fermions and related van der waals heterojunctions," Small, Vol. 19, No. 1, 2205329, 2023.        Google Scholar

69. Xu, Huang, Cheng Guo, Jiazhen Zhang, Wanlong Guo, Chia-Nung Kuo, Chin Shan Lue, Weida Hu, Lin Wang, Gang Chen, Antonio Politano, Xiaoshuang Chen, and Wei Lu, "PtTe2-based type-II dirac semimetal and its van der waals heterostructure for sensitive room temperature terahertz photodetection," Small, Vol. 15, No. 52, 1903362, 2019.        Google Scholar

70. Tang, Weiwei, Antonio Politano, Cheng Guo, Wanlong Guo, Changlong Liu, Lin Wang, Xiaoshuang Chen, and Wei Lu, "Ultrasensitive room-temperature terahertz direct detection based on a bismuth selenide topological insulator," Advanced Functional Materials, Vol. 28, No. 31, 1801786, 2018.        Google Scholar