**Meet the editor**

Taher Hcine Ghrib is currently an associate professor and an aggregated teacher in physics at the College of Sciences, Dammam of Imam Abdulrahman Bin Faisal University, Saudi Arabia. He obtained his habilitation degree in physics at the Faculty of Science in 2017 in Tunisia. He prepared his thesis in Tunisia that covers an "investigation of the thermally treated steel by the

photothermal deflection technique" and presented it in 2008. He obtained his aggregation degree in physics and chemistry at the Preparatory Institute for Scientific and Technical Studies of El Marsa in 2001 in Tunisia. He also worked as a course teacher of physics. He worked on steel and metal alloys in his thesis and demonstrated a very practical method for measuring the mechanical properties of steels such as hardness by measuring the thermal conductivity by means of mathematical models and experimental nondestructive measurements. Almost all of his works are published in numerous publications in various journals and books.

Now, he is specialized in nano- and porous materials and thin films of metals, perovskites, and alloys. He is involved in the Empowering Tunisian Renewable Energy Research Activities (ETRERA) project, of which the object is to realize a fuel cell of high-electrical performance. He has also led many scientific projects in Saudi Arabia.

Contents

**Preface VII**

**Section 1 Porous Materials 1**

Farshid Karbassian

Ana S. Mestre and Ana P. Carvalho

**Section 2 Porosity Controlling and Measurement 91**

Ning Wang, Yujie Ke and Yi Long

Ogam and Farid G. Mitri

Chapter 7 **Porous Structures in Heat Pipes 141**

Patrik Nemec

**Chapters 37**

Chapter 2 **Nanoporous Carbon Synthesis: An Old Story with Exciting New**

María Canal-Rodríguez, J. Angel Menéndez and Ana Arenillas

Zine El Abiddine Fellah, Mohamed Fellah, Claude Depollier, Erick

Chapter 3 **Carbon Xerogels: The Bespoke Nanoporous Carbons 69**

Chapter 4 **Controlled Porosity in Thermochromic Coatings 93**

Chapter 5 **Ultrasound Measuring of Porosity in Porous Materials 111**

Chapter 6 **Unsteady Magnetohydrodynamic Flow of Jeffrey Fluid through**

**a Porous Oscillating Rectangular Duct 125** Amir Khan, Gul Zaman and Obaid Algahtani

**Section 3 Porosity Effect on the Materials Properties 139**

Chapter 1 **Porous Silicon 3**
