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

Enhanced catalytic performance through precise structural modification of Au-Ag nanoworms using controlled etching process Khan, Ghazanfar Ali; Bek, Alpan; Masson, Jean-Francois; Ahmed, Waqqar (2025-05-20) Polycrystalline nanomaterials inherently possess a high concentration of defects, owing to the presence of grain boundaries. These defects, while abundant in smaller nanoparticles (NPs), can become embedded within the bulk...
Enhancing InGaN LED performance via ALD-grown Al2O3 sidewall passivation Bayramlı, Hasan Mert; Genç, Muhammet; Yücel, Oğuzhan; Bulut, B.; Bek, Alpan; Demirtaş, Mustafa (2025-04-01) InGaN-based light-emitting diodes (LEDs) are at the forefront of solid-state lighting technologies due to their superior efficiency and broad spectral emission. However, their performance is often compromised by leakage cu...
Laser-Induced Damage of UHMW-PE-Based Layered Ballistic Materials Candan, Can; Kaya Çekin, Emine Yasemen; Akşit Kaya, Elif Türkan; Tiken, Mehmet; Bek, Alpan; Berberoğlu, Halil; ORHAN, ELİF; Yeniay, Aydın (2024-11-19) The laser-induced damage threshold properties of material structures play a key role in identifying and selecting optimum materials with the respective geometric configurations for laser shielding applications. The laser-i...
Gate leakage reduction in AlGaN/GaN HEMTs using in situ ion treatment Nawaz, Muhammad Imran; Gurbuz, Abdulkadir; Salkim, Gurur; Zafar, Salahuddin; Akoglu, Busra Cankaya; Bek, Alpan; Ozbay, Ekmel (2024-09-01) A new in situ treatment method is proposed to reduce the gate leakage in normally-on AlGaN/GaN HEMTs. It consists of O2-Ar ion bombardment before the gate metalization. Ion treatment is found to improve the quality of gate...
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)

Citation Formats