Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

Browse by Current Cardiff authors

[up] Up a level
Number of items: 30.

Alt, Alexander ORCID: https://orcid.org/0000-0002-7621-4940, Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681, Jiang, Sheng, Lee, Kean Boon, Casbon, Michael ORCID: https://orcid.org/0000-0002-8637-9888, Chen, Peng, Houston, Peter, Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830 and Lees, Jonathan ORCID: https://orcid.org/0000-0002-6217-7552 2019. Analysis of gain variation with changing supply voltages in GaN HEMTs for envelope tracking power amplifiers. IEEE Transactions on Microwave Theory and Techniques 67 (7) , pp. 2495-2504. 10.1109/TMTT.2019.2916404
file

Chandrasekar, Hareesh, Uren, Michael J., Casbon, Michael A. ORCID: https://orcid.org/0000-0002-8637-9888, Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681, Eblabla, Abdalla ORCID: https://orcid.org/0000-0002-5991-892X, Elgaid, Khaled ORCID: https://orcid.org/0000-0003-3265-1097, Pomeroy, James W., Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 and Kuball, Martin 2019. Quantifying temperature-dependent substrate loss in GaN-on-Si RF technology. IEEE Transactions on Electron Devices 66 (4) , pp. 1681-1687. 10.1109/TED.2019.2896156
file

Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681, Singh, Manikant, Casbon, Michael A. ORCID: https://orcid.org/0000-0002-8637-9888, Perks, Richard M. ORCID: https://orcid.org/0000-0003-0873-0537, Uren, Michael J., Martin, Trevor, Kuball, Martin and Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830 2018. Evaluation of pulsed I-V analysis as validation tool of nonlinear RF models of GaN-based HFETs. IEEE Transactions on Electron Devices 65 (12) , pp. 5307-5313. 10.1109/TED.2018.2872513
file

Chandrasekar, Hareesh, Uren, Michael J., Eblabla, Abdalla ORCID: https://orcid.org/0000-0002-5991-892X, Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681, Casbon, Michael A. ORCID: https://orcid.org/0000-0002-8637-9888, Tasker, Paul J. ORCID: https://orcid.org/0000-0002-6760-7830, Elgaid, Khaled ORCID: https://orcid.org/0000-0003-3265-1097 and Kuball, Martin 2018. Buffer-induced current collapse in GaN HEMTs on highly resistive Si substrates. IEEE Electron Device Letters 39 (10) , pp. 1556-1559. 10.1109/LED.2018.2864562
file

Pooth, A., Bergsten, J., Rorsman, N., Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681, Perks, Richard ORCID: https://orcid.org/0000-0003-0873-0537, Tasker, Paul ORCID: https://orcid.org/0000-0002-6760-7830, Martin, T., Webster, R., Cherns, D., Uren, M. and Kuball, M. 2017. Morphological and electrical comparison of Ti and Ta based ohmic contacts for AlGaN/GaN-on-SiC HFETs. Microelectronics Reliability 68 , pp. 2-4. 10.1016/j.microrel.2016.11.002
file

Gold, H., Haase, A., Fian, A., Prietl, C., Striedinger, B., Zanella, F., Marjanović, N., Ferrini, R., Ring, J., Lee, K.-D., Jiawook, R., Drost, A., König, M., Müller, R., Myny, K., Genoe, J., Kleb, U., Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681, Prétôt, R., Kraxner, J., Schmied, R. and Stadlober, B. 2015. Self-aligned flexible organic thin-film transistors with gates patterned by nano-imprint lithography. Organic Electronics 22 , pp. 140-146. 10.1016/j.orgel.2015.03.047

Ulmeanu, Magdalena, Petkov, Petko Vladev ORCID: https://orcid.org/0000-0003-2185-2651, Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681 and Brousseau, Emmanuel Bruno Jean Paul ORCID: https://orcid.org/0000-0003-2728-3189 2014. Formation of ordered arrays of Si and GaAs nanostructures by single-shot laser irradiation in near-field at the solid/liquid interface. Materials Research Express 1 (1) , 015030. 10.1088/2053-1591/1/1/015030

Bigot, Samuel ORCID: https://orcid.org/0000-0002-0789-4727, Lacan, Franck Andre ORCID: https://orcid.org/0000-0002-3499-5240, Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681, Petkov, Petko Vladev ORCID: https://orcid.org/0000-0003-2185-2651, Babenko, M., Castro, G. G., Sweeney, J., Ugail, H. and Whiteside, B. 2014. Micro and nano structuring of sapphire for Micro Injection process investigation. Presented at: 9th International Conference on Micromanufacturing, Singapore, China, 25-28 March 2014. 9th International Conference on MicroManufacturing.

Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681, Scholz, Steffen G., Jourlin, Y., Tonchev, S., Reynaud, S., Boukenter, A. and Parriaux, O. 2014. 2N Period submicron grating at the inner wall of a metal cylinder. Microsystem Technologies 20 (10-11) , pp. 1833-1837. 10.1007/s00542-013-1949-y

Zanella, F., Marjanović, N., Ferrini, R., Gold, H., Haase, A., Fian, A., Stadlober, B., Müller, R., Genoe, J., Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681, Drost, A., König, M., Lee, K.-D., Ring, J., Prétôt, R., Enz, C. C. and Sallese, J.-M. 2013. Design and modeling of self-aligned nano-imprinted sub-micrometer pentacene-based organic thin-film transistors. Organic Electronics 14 (11) , pp. 2756-2761. 10.1016/j.orgel.2013.07.035

Griffiths, C. A., Dimov, S. S., Rees, A., Dellea, O., Gavillet, J., Lacan, Franck Andre ORCID: https://orcid.org/0000-0002-3499-5240 and Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681 2013. A novel texturing of micro injection moulding tools by applying an amorphous hydrogenated carbon coating. Surface and Coatings Technology 235 , pp. 1-9. 10.1016/j.surfcoat.2013.07.006

Hashoosh, Ahmed, Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681, Brousseau, Emmanuel Bruno Jean Paul ORCID: https://orcid.org/0000-0003-2728-3189 and Moosa, Ahmed 2013. Fabrication of aluminium nanowires by differential pressure injection. ISRN Nanomaterials 2013 , 132798. 10.1155/2013/132798

Omar, Fuad, Kolew, Alexander, Brousseau, Emmanuel Bruno Jean Paul ORCID: https://orcid.org/0000-0003-2728-3189 and Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681 2013. Simulation and experimental study of the effects of process factors on the uniformity of the residual layer thickness in hot embossing. Journal of Micro and Nano-Manufacturing 1 (2) , 021002. 10.1115/1.4024097

Vella, Pierre C., Dimov, Stefan Simeonov, Kolew, Alexander, Minev, Ekaterin, Popov, Krastimir Borisov, Lacan, Franck Andre ORCID: https://orcid.org/0000-0002-3499-5240, Griffiths, Christian Andrew, Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681 and Scholz, Steffen Gerhard 2012. Bulk Metallic Glass based Tool-Making Process Chain for Micro- and Nano- Replication. Presented at: 4M 2012 - 9th International Conference on Multi-Material Micro Manufacture, Vienna, Austria, 9–11 October 2012. Published in: Noll, H., Adamovic, N. and Dimov, Stefan Simeonov eds. Proceedings of the 9th International Conference on Multi-Material Micro Manufacture. Singapore: Research Publishing, p. 309. 10.3850/978-981-07-3353-7_300

Popov, Krastimir Borisov, Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681 and Petkov, Petko Vladev ORCID: https://orcid.org/0000-0003-2185-2651 2012. A Novel Approach for Size Up-Scaling of Nickel Master for the Replication of Micro and Nano Features. Presented at: 4M 2012 - 9th International Conference on Multi-Material Micro Manufacture, Vienna, Austria, 9–11 October 2012. Published in: Noll, H., Adamovic, N. and Dimov, Stefan Simeonov eds. Proceedings of the 9th International Conference on Multi-Material Micro Manufacture. Singapore: Research Publishing, p. 73. 10.3850/978-981-07-3353-7_280

Omar, Fuad, Kolew, Alexander, Brousseau, Emmanuel Bruno Jean Paul ORCID: https://orcid.org/0000-0003-2728-3189 and Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681 2012. Process factors influence on residual layer uniformity in hot embossing. Presented at: 9th International Conference on Multi-Material Micro Manufacture, Vienna, Austria, 9-11 October 2012. Published in: Noll, Humbert, Adamovic, Nadja and Dimov, Stefan eds. Multi-Material Micro Manufacture Proceedings of the 9th International Conference on. 9th International Conference on Multi-Material Micro Manufacture (4M2012). Singapore: Research Publishing, pp. 81-84. 10.3850/978-981-07-3353-7_302

Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681, Lalev, Georgi Maximov, Velkova, Valentina, Popov, Krastimir Borisov, Scholz, Steffen Gerhard and Dimov, Stefan Simeonov 2011. Master tool fabrication for the replication of micro and nano features. Presented at: 8th International Conference on Multi-Material Micro Manufacture, Suttgart, Germany, 8–10 November 2011. Published in: Kück, Heinz, Reinecke, Holger and Dimov, Stefan Simeonov eds. Proceedings of the 8th International Conference on Multi-Material Micro Manufacture, Suttgart, Germany, 8–10 November 2011. Singapore: Research Publishing, pp. 317-320. 10.3850/978-981-07-0319-6_215

Griffiths, Christian Andrew, Dimov, Stefan Simeonov, Scholz, Steffen Gerhard, Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681 and Tosello, G. 2011. Process factors influence on cavity pressure behavior in microinjection moulding. Journal of Manufacturing Science and Engineering 133 (3) , 031007. 10.1115/1.4003953

Griffiths, Christian Andrew, Dimov, Stefan, Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681, Scholz, Steffen Gerhard, Fischer, S. and Spitzbart, M. 2011. Rapid tooling for microfluidic prototypes. Presented at: 6th International Conference on Manufacturing (ICOMM), Tokyo, Japan, 7-10 March 2011.

Griffiths, Christian Andrew, Dimov, Stefan Simeonov, Scholz, Steffen Gerhard, Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681, Tosello, G., Hansen, H. N. and Williams, Eleri 2011. Cavity pressure behavior in micro injection moulding. Presented at: 4M2010: 7th International Conference on Multi-Material Micro Manufacture, Oyonnax, France, 17-19 November 2010. Published in: Fillon, B., Khan-Malek, C. and Dimov, Stefan Simeonov eds. Proceedings of the 7th International Conference on Multi-Material Micro Manufacture. Singapore: Research Publishing, 10.3850/978-981-08-6555-9_164

Griffiths, Christian Andrew, Dimov, Stefan Simeonov, Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681, Scholz, Steffen Gerhard, Fischer, S. and Spitzbart, M. 2011. Prototype tooling for producing small series of polymer microparts. Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 225 (12) , pp. 2189-2205. 10.1177/2041297510393799

Velkova, Valentina, Lalev, Georgi M., Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681, Omar, Fuad, Scholz, Steffen Gerhard, Minev, Ekaterin and Dimov, Stefan Simeonov 2011. Process chain for serial manufacture of 3D micro- and nano-scale structures. CIRP Journal of Manufacturing Science and Technology 4 (4) , pp. 340-346. 10.1016/j.cirpj.2011.03.005

Velkova, V., Lalev, G., Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681, Scholz, Steffen Gerhard, Hiitola-Keinänen, J., Gold, H., Haase, A., Hast, J., Stadlober, B. and Dimov, Stefan Simeonov 2010. Design and validation of a novel master-making process chain for organic and large area electronics on flexible substrates. Microelectronic Engineering 87 (11) , pp. 2139-2145. 10.1016/j.mee.2010.01.015

Velkova, Valentina, Lalev, Georgi Maximov, Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681, Scholz, Steffen Gerhard and Dimov, Stefan Simeonov 2009. Novel process chain for fabrication of Ni shims. Presented at: 4M 2009: 6th International Conference on Multi-Material Micro Manufacture, Karlsruhe, Germany, 23-25 September 2009. Published in: Saile, V., Ehmann, K. and Dimov, Stefan Simeonov eds. Proceedings of 4M 2009: 6th International Conference on Multi-Material Micro Manufacture. Singapore: Research Publishing, pp. 411-414. 10.3850/4M2009RP001_9087

Svintsov, A., Zaitsev, S., G., Lalev, Dimov, Stefan Simeonov, Velkova, V. and Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681 2009. FIB sputtering optimization using Ion Reverse Software. Microelectronic Engineering 86 (4-6) , pp. 544-547. 10.1016/j.mee.2009.01.073

Lalev, G., Petkov, Petko Vladev ORCID: https://orcid.org/0000-0003-2185-2651, Sykes, N., Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681, Velkova, V., Dimov, Stefan Simeonov and Barrow, David Anthony ORCID: https://orcid.org/0000-0003-2096-7262 2009. Fabrication and validation of fused silica NIL templates incorporating different length scale features. Microelectronic Engineering 86 (4-6) , pp. 705-708. 10.1016/j.mee.2009.01.074

Scholz, Steffen Gerhard, Petkov, Petko Vladev ORCID: https://orcid.org/0000-0003-2185-2651, Brousseau, Emmanuel Bruno Jean Paul ORCID: https://orcid.org/0000-0003-2728-3189, Griffiths, Christian Andrew, Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681 and Dimov, Stefan Simeonov 2009. Process chain for replicating bio inspired micro structured surfaces. Presented at: 4M 2009: 6th International Conference on Multi-Material Micro Manufacture, Karlsruhe, Germany, 23-25 September 2009. Published in: Saile, V. and Ehmann, K. eds. Proceedings of 4M 2009: 6th International Conference on Multi-Material Micro Manufacture. Singapore: Research Publishing, pp. 271-274. 10.3850/4M2009RP001_9054

Hirshy, Hassan Ali ORCID: https://orcid.org/0000-0003-0281-3681 2008. Growth and characterisation of indium nitride. PhD Thesis, Cardiff University.
file

Butcher, K S A, Fernandes, A J, Chen, P P T, Wintrebert -Fouquet, M, Timmers, H, Shrestha, S K, Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681 and Perks, Richard Marc ORCID: https://orcid.org/0000-0003-0873-0537 2007. The nature of nitrogen related point defects in common forms of InN. Journal of Applied Physics 101 (12) , 123702. 10.1063/1.2736654
file

Butcher, K. S. A., Hirshy, Hassan ORCID: https://orcid.org/0000-0003-0281-3681, Perks, Richard Marc ORCID: https://orcid.org/0000-0003-0873-0537, Wintrebert-Fouquet, M. and Chen, P. P.-T. 2006. Stoichiometry effects and the Moss-Burstein effect for InN. Physica status solidi (a) 203 (1) , pp. 66-74. 10.1002/pssa.200563504

This list was generated on Fri Oct 31 11:06:42 2025 GMT.


Maintained by Cardiff University IT