Contact Dr Ata Khalid
- Tel: +44 (0) 1234 754141
- Email: Ata.Khalid@cranfield.ac.uk
- ORCID
- Google Scholar
- ResearchGate
Areas of expertise
- Defence Sensors
- Nanomaterials
- Nanotechnology
- Sensor Technologies
Background
Ata Khalid is a Senior Lecturer in Sensors and Sensor Systems at Cranfield Defence and Security, Defence Academy of UK, Cranfield University. Working in Cranfield Defence and Security in Electronic Warfare Information & Cyber as head of Electro-Optic and Autonomy Group. I lead the module Electro-Optic & Infrared Systems in Military Electronic Systems Engineering MSc program. I have supervised several MSc projects at Defence Academy of United Kingdom based around Compound Semiconductor materials and devices for military applications. I have a longstanding record of accomplishments in III-IV compound semiconductor materials and devices. I am professionally skilled in Nanomaterials, Photo & Electron beam lithography, THz and mm-wave devices, mid-IR semiconductor device technology, Nanofabrication, and Management. I am always open to new projects and collaboration in these areas. I am always interested in volunteering and motivating the next generation of scientists and innovators.
I have published over 170 articles in the compound semiconductor, microwave/THz and photonics domains, a full list can be found here ( http://eprints.gla.ac.uk/view/author/1944.html ). I was a co-investigator (Co-I) in the EPSRC project EP/H011862/1 on planar Gunn diode technology, and a Co-I in the ~4 million TeraApps Horizon 2020 project (765426, 2018-2021) Marie Curie Innovative Training Network on THz electronics and photonics. He led the development of the planar Gunn diode as a solid-state THz source as well as related enabling technologies for imaging applications.
Current activities
Compound Semiconductor materials and devices expert with a demonstrated history of research and scholarship. Strong education professional skilled in Nanomaterials, Photo & Electron beam lithography, THz and mm-wave devices, mid-IR semiconductor device technology, Nanofabrication, and Management.
Research Interests:
Infrared, mid-IR semiconductor sources and detectors
THz semiconductor source and detectors
RF and mm-wave security scanners & medical devices
PhD Positions:
Please contact me directly if you are interested in any of the research areas. Following Projects are available on self-funded basis.
1. Study of mid-IR LED array technology for advance material characterisation applications.
3. Investigation of a Terahertz source based on Vacuum Electron Devices
4. Smart Security Imaging
6. mm-wave Assisted Targeted Drug Delivery
Clients
- Engineering and Physical Sciences Research Council
- Atomic Weapons Establishment
- QinetiQ Group PLC
Publications
Articles In Journals
- Demirhan A, Chianella I, Patil SB & Khalid A. (2024). A low-cost miniature immunosensor for haemoglobin as a device for the future detection of gastrointestinal bleeding. The Analyst, 149(4)
- Al-Khalidi A, Alharbi KH, Wang J, Morariu R, Wang L, .... (2020). Resonant Tunneling Diode Terahertz Sources With up to 1 mW Output Power in the J-Band. IEEE Transactions on Terahertz Science and Technology, 10(2)
- Mindil A, Dunn G, Khalid A & Oxley C. (2020). Investigation of THz Frequency Shaped Anode Planar Gunn Diodes Operating in Delayed Mode. IEEE Journal of the Electron Devices Society, 8
- Mindil A, Dunn GM, Khalid A & Oxley CH. (2020). Investigation of High-Frequency Fine Structure in the Current Output of Shaped Contact Planar Gunn Diodes. IEEE Transactions on Electron Devices, 67(5)
- Mindil A, Dunn GM, Khalid A & Oxley CH. (2020). Investigation of Contact Edge Effects in the Channel of Planar Gunn Diodes. IEEE Transactions on Electron Devices, 67(1)
- Maricar MI, Khalid A, Dunn G, Greedy S, Thomas D, .... (2018). An electrical equivalent circuit to simulate the output power of an AlGaAs/GaAs planar gunn diode oscillator. Microwave and Optical Technology Letters, 60(9)
- Xie C, Pusino V, Khalid A, Craig AP, Marshall A, .... (2018). Monolithically Integrated InAsSb-Based nBnBn Heterostructure on GaAs for Infrared Detection. IEEE Journal of Selected Topics in Quantum Electronics, 24(6)
- Xie C, Aziz M, Pusino V, Khalid A, Steer M, .... (2017). Single-chip, mid-infrared array for room temperature video rate imaging. Optica, 4(12)
- Aziz M, Xie C, Pusino V, Khalid A, Steer M, .... (2017). Multispectral mid-infrared light emitting diodes on a GaAs substrate. Applied Physics Letters, 111(10)
- Glover J, Khalid A, Cumming D, Dunn GM, Kuball M, .... (2017). Thermal Profiles Within the Channel of Planar Gunn Diodes Using Micro-Particle Sensors. IEEE Electron Device Letters, 38(9)
- Alharbi KH, Khalid A, Ofiare A, Wang J & Wasige E. (2017). Diced and grounded broadband bow‐tie antenna with tuning stub for resonant tunnelling diode terahertz oscillators. IET Microwaves, Antennas & Propagation, 11(3)
- Maricar MI, Khalid A, Cumming DRS & Oxley CH. (2016). Extraction of second harmonic from an InP based planar Gunn diode using diamond resonator for milli-metric wave frequencies. Solid-State Electronics, 116
- Pusino V, Xie C, Khalid A, Thayne IG & Cumming DRS. (2016). Development of InSb dry etch for mid-IR applications. Microelectronic Engineering, 153
- Pusino V, Xie C, Khalid A, Steer MJ, Sorel M, .... (2016). InSb Photodiodes for Monolithic Active Focal Plane Arrays on GaAs Substrates. IEEE Transactions on Electron Devices, 63(8)
- Xie C, Pusino V, Khalid A, Steer MJ, Sorel M, .... (2015). Monolithic Integration of an Active InSb-Based Mid-Infrared Photopixel With a GaAs MESFET. IEEE Transactions on Electron Devices, 62(12)
- Maricar MI, Khalid A, Dunn G, Cumming D & Oxley CH. (2015). Experimentally estimated dead space for GaAs and InP based planar Gunn diodes. Semiconductor Science and Technology, 30(1)
- Glover J, Khalid A, Stephen A, Dunn G, Cumming D, .... (2015). Micro-coolers fabricated as a component in an integrated circuit. Semiconductor Science and Technology, 30(1)
- Maricar MI, Khalid A, Cumming DSR & Oxley CH. (2015). Improving the quality factor of the coplanar waveguide resonator. Microwave and Optical Technology Letters, 57(6)
- Papageorgiou V, Khalid A, Chong Li & Cumming DRS. (2014). Cofabrication of Planar Gunn Diode and HEMT on InP Substrate. IEEE Transactions on Electron Devices, 61(8)
- Maricar MI, Khalid A, Glover J, Evans GA, Vasileious P, .... (2014). Extraction of second harmonic from the In0.53Ga0.47As planar Gunn diode using radial stub resonators. Solid-State Electronics, 99
- Papageorgiou V, Khalid A, Li C, Steer MJ & Cumming DRS. (2014). Integration techniques of pHEMTs and planar Gunn diodes on GaAs substrates. Solid-State Electronics, 102
- Stephen A, Dunn GM, Glover J, Oxley CH, Bajo MM, .... (2014). Micro-cooler enhancements by barrier interface analysis. AIP Advances, 4(2)
- Khalid A, Dunn GM, Macpherson RF, Thoms S, Macintyre D, .... (2014). Terahertz oscillations in an In0.53Ga0.47As submicron planar Gunn diode. Journal of Applied Physics, 115(11)
- Glover J, Khalid A, Cumming DRS, Bajo MM, Kuball M, .... (2014). On wafer thermal characterization of miniature gallium arsenide microcoolers with thermal loading from DC probes. Microwave and Optical Technology Letters, 56(11)
- Maricar MI, Glover J, Khalid A, Li C, Evans G, .... (2014). An AlGaAs/GaAs‐based planar
G unn diode oscillator with a fundamental frequency operation of 120 GHz. Microwave and Optical Technology Letters, 56(10) - Maricar MI, Glover J, Evans G, Ata‐ul‐Khalid , Cumming D, .... (2014). Design and characterization of a novel diamond resonator. Microwave and Optical Technology Letters, 56(7)
- Khalid A, Li C, Papageogiou V, Dunn GM, Steer MJ, .... (2013). $\hbox{In}_{0.53}\hbox{Ga}_{0.47}\hbox{As}$ Planar Gunn Diodes Operating at a Fundamental Frequency of 164 GHz. IEEE Electron Device Letters, 34(1)
- Stephen A, Dunn GM, Oxley CH, Glover J, Montes Bajo M, .... (2013). Improvements in thermionic cooling through engineering of the heterostructure interface using Monte Carlo simulations. Journal of Applied Physics, 114(4)
- Montes Bajo M, Dunn G, Stephen A, Khalid A, Cumming DRS, .... (2013). Impact ionisation electroluminescence in planar GaAs-based heterostructure Gunn diodes: Spatial distribution and impact of doping non-uniformities. Journal of Applied Physics, 113(12)
- Li C, Lok LB, Khalid A, Papageorgiou V, Grant J, .... (2013). Millimeter-wave coplanar stripline power dividers. International Journal of Microwave and Wireless Technologies, 5(3)
- Khalid A, Li C, Papageorgiou V, Pilgrim NJ, Dunn GM, .... (2013). A 218‐GHz second‐harmonic multiquantum well GaAs‐based planar Gunn diodes. Microwave and Optical Technology Letters, 55(3)
- Saha SC, Grant JP, Ma Y, Khalid A, Hong F, .... (2012). Terahertz Frequency-Domain Spectroscopy Method for Vector Characterization of Liquid Using an Artificial Dielectric. IEEE Transactions on Terahertz Science and Technology, 2(1)
- Montes M, Dunn G, Stephen A, Khalid A, Li C, .... (2012). Reduction of Impact Ionization in GaAs-Based Planar Gunn Diodes by Anode Contact Design. IEEE Transactions on Electron Devices, 59(3)
- Li C, Khalid A, Papageorgiou V, Lok LB & Cumming DRS. (2012). A Wideband CPW Ring Power Combiner With Low Insertion Loss and High Port Isolation. IEEE Microwave and Wireless Components Letters, 22(11)
- Khalid A, Li C, Grant J, Saha S, Ferguson S, .... (2012). Simple e-beam air-bridge technology for mm-wave applications. Microelectronic Engineering, 98
- Saha SC. (2012). Application of terahertz spectroscopy to the characterization of biological samples using birefringence silicon grating. Journal of Biomedical Optics, 17(6)
- Li C, Lok LB, Khalid A & Cumming DRS. (2011). COPLANAR RING DIVIDER WITH WIDEBAND HIGH ISOLATION PERFORMANCE. Progress In Electromagnetics Research Letters, 25
- Grant J, Ma Y, Saha S, Khalid A & Cumming DRS. (2011). Polarization insensitive, broadband terahertz metamaterial absorber. Optics Letters, 36(17)
- Saha SC, Grant JP, Ma Y, Khalid A, Hong F, .... (2011). Method for vector characterization of polar liquids using frequency-domain spectroscopy. Optics Letters, 36(17)
- Grant J, Ma Y, Saha S, Lok LB, Khalid A, .... (2011). Polarization insensitive terahertz metamaterial absorber. Optics Letters, 36(8)
- Ma Y, Chen Q, Grant J, Saha SC, Khalid A, .... (2011). A terahertz polarization insensitive dual band metamaterial absorber. Optics Letters, 36(6)
- Li C, Lok LB, Khalid A, Thayne IG & Cumming DRS. (2011). Investigation of Loading Effect on Power Performance for Planar Gunn Diodes Using Load-Pull Measurement Technique. IEEE Microwave and Wireless Components Letters, 21(10)
- Li C, Khalid A, Paluchowski Caldwell SH, Holland MC, Dunn GM, .... (2011). Design, fabrication and characterization of In0.23Ga0.77As-channel planar Gunn diodes for millimeter wave applications. Solid-State Electronics, 64(1)
- Pilgrim NJ, Khalid A, Li C, Dunn GM & Cumming DRS. (2011). Contact shaping in planar Gunn diodes. physica status solidi c, 8(2)
- Khalid A, Li C, Pilgrim NJ, Holland MC, Dunn GM, .... (2011). Novel composite contact design and fabrication for planar Gunn devices for millimeter‐wave and terahertz frequencies. physica status solidi c, 8(2)
- Li C, Khalid A, Caldwell SHP, Pilgrim NJ, Holland MC, .... (2011). Enhancement of power and frequency in Planar Gunn diodes by introducing extra delta‐doping layers. Microwave and Optical Technology Letters, 53(7)
- Ma Y, Chen Q, Khalid A, Saha SC & Cumming DRS. (2010). Terahertz dual-band resonator on silicon. Optics Letters, 35(4)
- Saha SC, Ma Y, Grant JP, Khalid A & Cumming DRS. (2010). Imprinted terahertz artificial dielectric quarter wave plates. Optics Express, 18(12)
- Saha SC, Ma Y, Grant JP, Khalid A & Cumming DRS. (2010). Imprinted quarter wave plate at terahertz frequency. Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena, 28(6)
- Saha SC, Ma Y, Grant JP, Khalid A & Cumming DRS. (2010). Low-Loss Terahertz Artificial Dielectric Birefringent Quarter-Wave Plates. IEEE Photonics Technology Letters, 22(2)
- Ma Y, Khalid A, Drysdale TD & Cumming DRS. (2009). Direct fabrication of terahertz optical devices on low-absorption polymer substrates. Optics Letters, 34(10)
- Li C, Khalid A, Pilgrim N, Holland MC, Dunn G, .... (2009). Novel planar Gunn diode operating in fundamental mode up to 158 GHz. Journal of Physics: Conference Series, 193(1)
- Pilgrim NJ, Macpherson RF, Khalid A, Dunn GM & Cumming DRS. (2009). Multiple and broad frequency response Gunn diodes. Semiconductor Science and Technology, 24(10)
- Shi X, Cleary A, Khalid A & Cumming DRS. (2009). Multiple plasmon resonances at terahertz frequencies from arrays of arsenic doped silicon dots. Microelectronic Engineering, 86(4-6)
- Pilgrim NJ, Khalid A, Dunn GM & Cumming DRS. (2008). Gunn oscillations in planar heterostructure diodes. Semiconductor Science and Technology, 23(7)
- Khalid A, Pilgrim NJ, Dunn GM, Holland MC, Stanley CR, .... (2007). A Planar Gunn Diode Operating Above 100 GHz. IEEE Electron Device Letters, 28(10)
- Khalid A, Dunn GM, Pilgrim N, Stanley CR, Thayne IG, .... (2007). Planar Gunn-type triode oscillator at 83 GHz. Electronics Letters, 43(15)
- Rezazadeh AA, Khalid AH & Sotoodeh M. (2001). Reliability investigation of implanted microwave InGaP/GaAs HBTs. Materials Science and Engineering: B, 80(1-3)
- Sotoodeh M, Khalid AH & Rezazadeh AA. (2000). Empirical low-field mobility model for III–V compounds applicable in device simulation codes. Journal of Applied Physics, 87(6)
- Rezazadeh AA, Bashar SA, Sheng H, Amin FA, Khalid AH, .... (1999). Reliability investigation of InGaP/GaAs HBTs under current and temperature stress. Microelectronics Reliability, 39(12)
- Sotoodeh M, Khalid AH, Hong Sheng , Amin FA, Gokdemir T, .... (1999). Direct extraction and numerical simulation of the base and collector delay times in double heterojunction bipolar transistors. IEEE Transactions on Electron Devices, 46(6)
- Budimir D, Robertson ID, Khalid AH & Rezazadeh AA. (1998). CPW low-pass filters on silicon substrate for multilayer MMICs. Microwave and Optical Technology Letters, 17(2)
- Sotoodeh M, Khalid AH & Rezazadeh AA. (1998). DC characterisation of HBTs using the observed kink effect on the base current. Solid-State Electronics, 42(4)
- Khalid AH & Rezazadeh AA. (1996). Fabrication and characterisation of transparent-gate field effect transistors using indium tin oxide. IEE Proceedings - Optoelectronics, 143(1)
- CHOHAN MH, KHALID AH, ZULFIQAR M, BUTT PK, KHAN F, .... (1992). SYNTHESIS AND ELECTRICAL RESISTIVITY OF NICKEL POLYMETHACRYLATE. Modern Physics Letters B, 06(10)
- CHOHAN MH, KHALID AH, ZULFIQAR M, BUTT PK, KHAN F, .... (1991). ELECTRON TRANSPORT MECHANISM IN COBALT POLYMETHACRYLATE (CoPMA). Modern Physics Letters B, 05(29)
Conference Papers
- Wasige E, Alharbi KH, Al-Khalidi A, Wang J, Khalid A, .... (2017). Resonant tunnelling diode terahertz sources for broadband wireless communications
- Xie C, Pusino V, Khalid A, Aziz M, Steer MJ, .... (2016). A new monolithic approach for mid-IR focal plane arrays
- Alharbi KH, Khalid A, Jue Wang , Ofiare A & Wasige E. (2016). Diced and grounded broadband bow-tie antenna with tuning stub for resonant tunnelling diode terahertz oscillators
- Xie C, Pusino V, Khalid A, Aziz M, Steer MJ, .... (2016). A Novel InSb-Based Photo-Pixel with a Monolithically Integrated GaAs MESFET for Video Rate Sampling
- Alharbi KH, Khalid A, Ofiare A, Wang J & Wasige E. (2016). Broadband bow-tie slot antenna with tuning stub for resonant tunnelling diode oscillators with novel configuration for substrate effects suppression
- Xie C, Pusino V, Khalid A, Aziz M, Steer MJ, .... (2016). Monolithic fabrication of InSb-based photo-pixel for Mid-IR imaging
- Khalid A, Cumming D, Clarke R, Li C & Ridler N. (2016). Evaluation of a VNA-based material characterization kit at frequencies from 0.75 THz to 1.1 THz
- Ofiare A, Wang J, Alharbi K, Khalid A, Wasige E, .... (2015). Novel tunnel diode oscillator power combining circuit topology based on synchronisation
- Wang J, Alharbi K, Ofiare A, Zhou H, Khalid A, .... (2015). High Performance Resonant Tunneling Diode Oscillators for THz Applications
- Alharbi KH, Ofiare A, Kgwadi M, Khalid A & Wasige E. (2015). Bow-tie antenna for terahertz resonant tunnelling diode based oscillators on high dielectric constant substrate
- Ofiare A, Khalid A, Wang J & Wasige E. (2015). Pulsed I-V and small signal characterisation and modelling of resonant tunneling diodes
- Al-Khalidi A, Khalid A & Wasige E. (2015). AlN/GaN HEMT technology with in-situ SiN
x passivation - Wang J, Ofiare A, Alharbi K, Brown R, Khalid A, .... (2015). MMIC resonant tunneling diode oscillators for THz applications
- Wang J, Alharbi K, Ofiare A, Khalid A, Cumming D, .... (2015). High-frequency resonant tunnelling diode oscillator with high-output power
- Jue Wang , Liquan Wang , Chong Li , Alharbi K, Khalid A, .... (2014). W-band InP-based resonant tunnelling diode oscillator with milliwatt output power
- Alharbi KH, Ofiare A, Khalid A, Wang J, Wasige E, .... (2014). Radiation pattern characterisation setup for G-band planar Yagi antennas
- Khalid A, Thoms S, Macintyre D, Thayne IG & Cumming DRS. (2014). Fabrication of submicron planar Gunn diode
- Maricar MI, Glover J, Evans GA, Khalid A, Papageorgiou V, .... (2013). Planar gunn diode characterisation and resonators
- Papageorgiou V, Khalid A, Li C, Cumming DRS & Dunn GM. (2013). The Development of Planar Gunn Diodes for the realisation of MMIC Oscillators
- Papageorgiou V, Khalid A, Steer MJ, Li C & Cumming DRS. (2013). Monolithic fabrication of a planar Gunn diode and a pHEMT side-by-side
- Ismaeel Maricar M, Glover J, Evans GA, Khalid A, Papageorgiou V, .... (2013). Planar gunn diode characterisation and resonator elements to realise oscillator circuits
- Papageorgiou V, Khalid A, Li C & Cumming DRS. (2013). Simulation and fabrication of InGaAs planar Gunn diode on InP substrate
- Li C, Lok LB, Khalid A, Papageorgiou V, Grant J, .... (2012). A coplanar ring power divider with high isolation for V-band and W-band applications
- Chong Li , Lai Bun Lok , Khalid A & Cumming DRS. (2011). A broadband circular combiner/divider for planar Gunn oscillators
- Saha SC, Grant JP, Ma Y, Khalid A, Hong F, .... (2011). Terahertz frequency domain spectroscopy for polar alcohol
- Lok LB, Li C, Khalid A, Pilgrim NJ, Dunn GM, .... (2010). Demonstration of the self-mixing effect with a planar gunn diode at millimeter-wave frequency
- Li C, Khalid A, Lok LB, Pilgrim NJ, Holland MC, .... (2010). An In
0.23 Ga0.77 As-based pHEMT-like planar Gunn diode operating at 116 GHz - Pilgrim NJ, Khalid A, Li C, Dunn GM & Cumming DRS. (2010). Vertical scaling of multi-stack Planar Gunn diodes
- Ma Y, Khalid A, Saha SC, Grant JP & Cumming DRS. (2010). THz band pass filter on plastic substrates and its application on biological sensing
- Saha SC, Ma Y, Grant JP, Khalid A & Cumming DRS. (2010). Fabrication of silicon quarter wave plate at Terahertz frequency
- Webster DR, Rezazadeh A, Sotoodeh M, Khalid A, Hu Z, .... (2002). Observations on the nonlinear behaviour of single and double InGaP/GaAs HBTs
- Khalid AH, Sotoodeh M & Rezazadeh AA. (1997). Planar self-aligned microwave InGaP/GaAs HBTs using He/sup +//O/sup +/ implant isolation
- Gokdemir T, Karacaoglu U, Budimir D, Economides SB, Khalid A, .... (1997). Multilayer passive components for uniplanar Si/SiGe MMICs
- Sotoodeh M, Khalid AH & Rezazadeh AA. (1997). Numerical modelling of AlGaAs/GaAs and InGaP/GaAs single and double HBTs
- Budimir D, Robertson ID, Khalid AH & Rezazadeh AA. (1997). Multilayer CPW lowpass filters on GaAs/Si MMICs
- Khalid AH. (1996). Realisation of optically transparent gate field effect transistors (TEGFETs)
- Khalid AH. (1996). Multilayer techniques for MMICs
- Boroumand FA, Khalid AH, Hopkinson M & Swanson JG. (1996). Observations of low frequency admittance between isolated GaAs structures formed by ion implantation and by epitaxy on epitaxial buffer layers prepared at high and low temperatures
- Budimir D, Robertson ID, Khalid AH & Rezazadeh AA. (1996). Low loss multilayer coplanar waveguide transmission lines on silicon substrate for MMICs