عنوان

Silikon yüzeylerin ıslatma davranışları ve elektrolit çözeltisi dolu silikon nano-kanalların ısıtransfer özellikleri üzerine moleküler dinamik çalışmaları

شماره

TLpq2524194562

زبان متن نوشتاري يا گفتاري و مانند آن

انگلیسی

عنوان اصلي

Silikon yüzeylerin ıslatma davranışları ve elektrolit çözeltisi dolu silikon nano-kanalların ısıtransfer özellikleri üzerine moleküler dinamik çalışmaları

نام عام مواد

[Thesis]

نام نخستين پديدآور

Özdemir, Abdullah Cihan

نام ساير پديدآوران

Barışık, Murat

نام ناشر، پخش کننده و غيره

Izmir Institute of Technology (Turkey)

تاریخ نشرو بخش و غیره

2020

نام خاص و کميت اثر

80

جزئيات پايان نامه و نوع درجه آن

Master's

کسي که مدرک را اعطا کرده

Izmir Institute of Technology (Turkey)

امتياز متن

2020

متن يادداشت

Silicon has always been of interest to researchers from various fields, especially the semiconductor industry. Silicon and silicon-based materials are frequently used in integrated circuits and micro/nano-electro-mechanical systems. Interfacial phenomena between phases is important for these applications. In this study, surface wetting and heat transfer at the solid/liquid interfacial region were investigated using the Molecular Dynamics method. The control of wetting was examined by changing silicon structure at single crystal and amorphous forms and was correlated with the surface coating thickness. Contact angles on both single crystal and amorphous surfaces were calculated. To understand the molecular regions affecting the contact angle, the near interface height parameter was defined as the distance from the surface. Then, interface densities and contact angles of single crystal and amorphous structures were calculated at each height parameter. We defined an effective range of intermolecular forces for the control of wetting. Second, heat transfer characteristics at water/silicon interfaces were examined. Solid/liquid interface is important to determine heat transfer at nanoscale. We focused on the influence of ionic conditions on heat transfer for a water-NaCl solution between two silicon walls. The surface charge density showed variation by ionic condition. We calculated surface charges naturally forming at the corresponding electrolyte concentration. With the increase in salinity, the electrolyte solution density increased and thermal conductivity decreased. Results showed good agreement with the experimental measurements. Additionally, we observed a 35% increase in heat transfer due to a decrease in interfacial thermal resistance by increasing ionic concentration to the highest salinity value of standard conditions. Heat transfer at solid/liquid interface characterized by Kapitza length was correlated with the salinity.

موضوع مستند نشده

Aqueous solutions

موضوع مستند نشده

Contact angle

موضوع مستند نشده

Heat conductivity

موضوع مستند نشده

Heat transfer

موضوع مستند نشده

Phase transitions

موضوع مستند نشده

Production capacity

مستند نام اشخاص تاييد نشده

Barışık, Murat

مستند نام اشخاص تاييد نشده

Özdemir, Abdullah Cihan

نام الکترونيکي

فرمت انتشار

p

نوع ماده

[Thesis]

کد کاربرگه

276903

سطح دسترسي

a

تكميل شده

Y