Alpan Bek

E-mail

bek@metu.edu.tr

Department

Department of Physics

ORCID

0000-0002-0190-7945

Scopus Author ID

6602813700

Web of Science Researcher ID

A-4847-2010

Development of a selective wet-chemical etchant for precise 3D sculpting of silicon enabled by infrared non-linear laser modification Zolfaghari Borra, Mona; Radfar, Behrad; Nasser, Hisham; Çolakoğlu, Tahir; Tokel, Onur; Turnalı, Ahmet; Işık Taşgın, Dilek; Toffoli, Hande; Toffoli, Daniele; İlday, Fatih Ömer; Turan, Raşit; Pavlov, Ihor; Bek, Alpan (2024-09-01) Recently-demonstrated high-quality three-dimensional (3D) subsurface laser processing inside crystalline silicon (c-Si) wafers opens a door to a wide range of novel applications in multidisciplinary research areas. Using t...
Voltage-controlled extraordinary optical transmission in the visible regime Asif, Hira; Bek, Alpan; TAŞGIN, MEHMET EMRE; ŞAHİN, RAMAZAN (2024-03-15) Control of components in integrated photonic circuits is crucial in achieving programmable devices. Operation bandwidth of a plasmonic device cannot be generally tuned once it is manufactured, especially in the visible reg...
Facile synthesis of Ag-coated Au-Ag nanoworms and their shell specific etching for enhanced catalytic activity Khan, Ghazanfar Ali; Demirtaş, Özge; Bek, Alpan; Ahmed, Waqqar (2023-11-01) One-dimensional noble-metal nanoparticles (NPs) and their surface modifications to enhance defect states are critical for heterogeneous catalysis. Herein, we report a remarkable enhancement in the catalytic activity of Au-...
On-demand continuous-variable quantum entanglement source for integrated circuits Günay, Mehmet; Das, Priyam; Yüce, Emre; Polat, Emre Ozan; Bek, Alpan; Taşgın, Mehmet Emre (2023-01-02) Integration of devices generating non-classical states (such as entanglement) into photonic circuits is one of the major goals in achieving integrated quantum circuits (IQCs). This is demonstrated successfully in recent de...
Nanosecond Laser-Induced Micro-Modifications in Bulk of Crystal Silicon Kadan, Viktor; Pavlova, Svitlana; Bek, Alpan; Aydin, Yavuz; Blonskyi, Ivan; Pavlov, Ihor (2023-01-01) 3D modifications of crystalline Si (c-Si) by nano-, pico-, or femtosecond lasers at 1550 nm-wavelength are under intensive studies nowadays due to the wide range of potential applications in photonics and optoelectronics [...
Development of Post Treatment Methods on Silver Nanowire Networks for Transparent Triboelectric Nanogenerator Sensors Çakır, Onuralp; Doğanay, Doğa; Çiçek, Melih Ögeday; Coşkun, Şahin; Demirtaş, Özge; Bek, Alpan; Ünalan, Hüsnü Emrah (2022-12-01)
Ultra-Narrow Linewidth Photo-Emitters in Polymorphic Selenium Nanoflakes Hussain, Naveed; Ahmed, Shehzad; Tepe, Huseyin U.; Huang, Kai; Avishan, Nardin; He, ShiJie; Rafique, Mohsin; Farooq, Umar; KASIRGA, TALİP SERKAN; Bek, Alpan; Turan, Raşit; Shahzad, Khurram; Wu, Hui; Wang, Zhiming (2022-10-01) Photoluminescence (PL) in state-of-the-art 2D materials suffers from narrow spectral coverage, relatively broad linewidths, and poor room-temperature (RT) functionality. The authors report ultra-narrow linewidth photo-emit...
LIPSS for SERS: Metal Coated Direct Laser Written Periodic Nanostructures for Surface Enhanced Raman Spectroscopy Erkizan, Serena Nur; İdikut, Fırat; Demirtas, Ozge; Goodarzi, Arian; Demir, Ahmet Kemal; Borra, Mona; Pavlov, Ihor; Bek, Alpan (2022-09-01) A novel method of fabricating large-area, low-cost surface-enhanced Raman spectroscopy (SERS) substrates is introduced which yields densely nanostructured surfaces utilizing laser-induced periodic surface structuring (LIPS...
Optical light management by self-arrangement of inverted tetragonal pyramids on the silicon surface through copper-assisted etching technique in a single step Donercark, Ergi; Çolakoğlu, Tahir; Terlemezoğlu, Makbule; Abak, Musa Kurtulus; Çiftpınar, Emine Hande; Bek, Alpan; Turan, Razit (2022-09-01) Developing efficient light trapping techniques plays a crucial role in improving silicon (Si) solar cell parameters by decreasing optical losses. Herein, four various surface morphologies by copper-assisted chemical etchin...
Structural, mechanical and electrical properties of sputter-coated copper thin films on polyethylene terephthalate Abdeltwab, E.; Atta, A.; Bek, Alpan (2022-08-10) © 2022 World Scientific Publishing Company.In this study, ion-beam-sputtering technique is used to prepare nanocomposite films, consisting of deposited copper nanoparticles (CuNPs) on polyethyleneterephthalate (PET). The s...

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