Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Sarfraz Qureshi"'
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 456:80-85
An automated approach is discussed for alignment and focusing in nuclear microprobes for otherwise manually controlled apertures. An adaptive convergent algorithm is developed to define the aperture sizes, locate the beam centroid and align the apert
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 404:74-80
Minimal proximity effect coupled with uniform energy deposition in thin polymer layers make Proton Beam Writing (PBW) an intuitive direct-write lithographic technique. Feature sizes matching the focused beam spot size have been fabricated in photores
Autor:
Anjam Khursheed, Sarfraz Qureshi, Jeroen A. van Kan, P. Santhana Raman, Rudy Pang, Nannan Liu, Xinxin Xu
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 404:243-249
In order to realize sub-10 nm feature size by proton beam writing (PBW) with writing speed comparable to electron beam lithography (EBL), a 200 kV compact PBW system is proposed here. In this system, a new nano-aperture electron impact ion source wit
Autor:
H. D. Liang, Thirumalai Venkatesan, Zhiya Dang, M. B. H. Breese, J.A. van Kan, A. Maira, M.D. Ynsa, Jianfeng Wu, Vicente Torres-Costa, Sarfraz Qureshi
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 394:1-5
We have developed a micromachining process to produce high-aspect-ratio channels and holes in glass and porous silicon. Our process utilizes MeV proton beam irradiation of silicon using direct writing with a focused beam, followed by electrochemical
Autor:
Sarfraz Qureshi, S. Thameem Dheen, Ce Zhang, Neelima Gupta, Fan Liu, Renko de Vries, Jeroen A. van Kan, Johan R. C. van der Maarel, Rajib Basak
Publikováno v:
Journal of Physical Chemistry Letters, 10(3), 316-321
Journal of Physical Chemistry Letters 10 (2019) 3
Journal of Physical Chemistry Letters 10 (2019) 3
Genetic profiling would benefit from linearization of ssDNA through the exposure of the unpaired bases to gene-targeting probes. This is compromised by ssDNA's high flexibility and tendency to form self-annealed structures. Here, we demonstrate that