Editorial Acknowledgment to Reviewers of Materials in 2020 Materials Editorial Office MDPI AG, St. Alban-Anlage 66, 4052 Basel, Switzerland Peer review is the driving force of journal development, and reviewers are gatekeepers who ensure that Materials maintains its standards for the high quality of its published papers. Thanks to the cooperation of our reviewers, in 2020, the median time to first deci- sion was 14 days and the median time to publication was 35 days. The editors would like to express their sincere gratitude to the following reviewers for their precious time and dedication, regardless of whether the papers were finally published: A. T. Ezhil, Vilian Abhishek, Sharma A. Toshimitsu, Yokobori Abishek B., Kamaraj Aamer, Nazir Abishek, Iyer Aamir, Jalil Ablyaz, Timir Aaron D., Nicholas Abm, Zakaria Aaron J., Pung Abolfazl, Shakouri Aaron M., Forster Abshar, Hasan Aaron Yu-Jen, Wu Abu Ul Hassan Sarwar, Rana Aase, Reyes Abul B. M., Saifullah Abbas, Ghanbari Abul Fazal M., Arif Abbas, Haddadi A-Cheng, Wang Abbas, Khoshnood Achim Walter, Hassel Abbas, Madani Adam Feliks, Junka Abbas, Mohajerani Adam, Bieńkowski Abbas, Taheri Adam, Cwudziński Citation: Materials Editorial Office. Abbas, Tamadon Adam, Gadomski Acknowledgment to Reviewers of Abbasali Taghavi, Ghalesari Adam, Gąska Materials in 2020. Materials 2021, 14, Abdalla, Abdal-hay Adam, Glowacz 514. https://doi.org/10.3390/ Abdel, El-kharbachi Adam, Grajcar ma14030514 Abdelhafed, Taleb Adam, Jakubas Published: 21 January 2021 Abdelhamid, Elaissari Adam, Kulawik Abdelkrem, Eltaggaz Adam, Masłoń Publisher’s Note: MDPI stays neu- Abderrahmane, Ayadi Adam, Piasecki tral with regard to jurisdictional Abdollah, Bahador Adam, Pietras claims in published maps and institu- Abdollah, Saboori Adam, Stolarski tional affiliations. Abdulgalim, Isaev Ádám, Tajti Abdulkarim, Amirov Adam, Watras Abdurizzagh, Khalf Adam, Wisniewski Copyright: © 2021 by the author. Li- Abhay, Kotnala Adam, Zielinski censee MDPI, Basel, Switzerland. Abheetha, Peiris Adeel, Afzal This article is an open access article Abhijit, Chatterjee Adela, Nano distributed under the terms and con- Abhirup, Dikshit Adele, Carrado ditions of the Creative Commons At- Abhishek K., Mishra Adelino V., Lopes tribution (CC BY) license (http://crea- Abhishek, Das Adeyemi, Adesina tivecommons.org/licenses/by/4.0/). Abhishek, Mehta Adham, Elsayed Materials 2021, 14, 514. https://doi.org/10.3390/ma14030514 www.mdpi.com/journal/materials Materials 2021, 14, 514 2 of 115 Adi, Ben-Artzy Agnieszka, Gubernat Adin, Stern Agnieszka, Jankowska Adina Magdalena, Musuc Agnieszka, Jędrzejewska Adina, Coroaba Agnieszka, Kochmańska Adinel, Gavrus Agnieszka, Królicka Adithya, Peddapuram Agnieszka, Kudelko Aditya Rio, Prabowo Agnieszka, Kyzioł Aditya, Mantri Agnieszka, Łękawa-Raus Aditya, Walvekar Agnieszka, Pawłowska Adnan Raheel, Shah Agnieszka, Piegat Adnan, Younis Agnieszka, Ślosarczyk Adolfo, Di Fiore Agnieszka, Szkliniarz Adrian Alexandru, Serbanoiu Agnieszka, Tercjak Adrian Ionut, Nicoara Agnieszka, Twardowska Adrian, Augustyniak Agnieszka, Wanag Adrian, Barylski Agnieszka, Woszuk Adrian, Burlacu Agnieszka, Żelazna Adrian, Circiumaru Agostina, Orefice Adrian, Curto Agostino, Lauria Adrian, Deaconu Agostino, Maurotto Adrian, Nicoara Aguinaldo, Fraddosio Adrián, Tenorio-Alfonso Agustin, Salazar Adriana Haydee, Martínez Reguero Ahamed, Irshad Adriana Vulpoi, Lazar Ahmad, Labanieh Adriana, Estokova Ahmad, Mostafa Adriana, Filip Ahmad, Omar Adriana, Kovalcik Ahmed A., Gheni Adriana, Nowak Ahmed M., Abu-Dief Adriana, Vargas-Nordcbeck Ahmed O., Mosleh Adriano, Troia Ahmed Ramadan, Suleiman Ady, Suwardi Ahmed Sabry, Afify Aerhan, Kim Ahmed Saleh, Dalaq Afriyanti, Sumboja Ahmed, Abdel-Mohti Afsaneh, Valizadeh Ahmed, Abumazwed Afshin, Hadipour Ahmed, Afify Agata, Borowik Ahmed, Al-Rahmani Agata, Jakóbik-Kolon Ahmed, Arafa Agata, Łamacz Ahmed, Elhattab Agata, Podsiadły-Paszkowska Ahmed, Elkaseer Agata, Przekora Ahmed, Ibrahim Agata, Siwińska Ahmed, Jalal Agnė, Kairytė Ahmed, Maamoun Agnès, Granier Ahmed, Maarouf Agnes, Klar Ahmed, Nassr Agnieszka J., Nowak Ahmed, Omar Agnieszka, Brzózka Ahmed, Talaat Agnieszka, Czapik Ahmet, Kertmen Agnieszka, Dąbrowska Ahmet, Teber Agnieszka, Dulska Aida, Naghilou Agnieszka, Gadomska-Gajadhur Aikaterini K., Andreopoulou Agnieszka, Gładysz-Płaska Aikaterini, Rogkala Materials 2021, 14, 514 3 of 115 Aikaterini, Varveri Alan, Turnbull Ailar, Hajimohammadi Alan, Wemyss Aimar, Orbe Alastair, MacLeod Ainhoa, Riquelme Albert E., Patterson Aiqin, Wang Albert, Argilaga Aira, Matsugaki Albert, Estrugo-Devesa Aires, Camões Albert, Rimola Gibert Airong, Xu Albert, Sabban Aissa, Bouaissi Albert, Serrà Aissam, Airoudj Albert. K. H., Kwan Aitana, Tamayo Alberto Jesús, Perea Moreno Aitor, Beranoagirre Alberto N., Araújo Aitzol, Lamikiz Alberto S., De León Aivaras, Kareiva Alberto V., Puga Aiying, Wang Alberto, Assirelli Aiyong, Wang Alberto, Barroso Ajay Giri Prakash, Kottapalli Alberto, Battistel Ajay Vikram, Singh Alberto, Campagnolo Ajay, Krishnamurthy Alberto, Concellon Ajeet, Kaushik Alberto, De Biase Ajit, Dhamdhere Alberto, Fabrizi Akbar Afaghi, Khatibi Alberto, Falcó Akhil, Tayal Alberto, Frache Akihide, Saimoto Alberto, Fraile Akihiko, Fujiwara Alberto, García-Peñas Akihiko, Kato Alberto, Girlando Akihiro, Nakatani Alberto, Gregori Akihito, Hashidzume Alberto, Hernández Creus Akiko, Tsurumaki Alberto, Lagazzo Akin, Akturk Alberto, López Ortega Akinola, Oyedele Alberto, Mannu Akinori, Kuzuya Alberto, Monsalve Akio, Nishimoto Alberto, Rodríguez-Archilla Akira, Ishigami Alborz, Shokrani Akira, Otsuki Aled Deakin, Roberts Akira, Tsuchiya Alejandro González, Orive Akira, Yamada Alejandro, Burgos-Cara Akishige, Hokugo Alejandro, Enfedaque Akitoshi, Shiotari Alejandro, Sánchez-Postigo Akkapol, Suea-Ngam Alejandro, Vega Akram, Alhussein Alejandro-Miguel, Sanchez-de-la-Muela Akshay, Chaudhari Aleksandar M., Mitrašinović Alaeddin Burak, Irez Aleksandar, Kondinski Alain Vande, Wouwer Aleksander, Hejna Alain, Gil Del Val Aleksander, Kowalski Alain, Perceval Aleksander, Lisiecki Alaitz, Linares-Unamunzaga Aleksander, Marek Alaitz, Zabala Aleksandr P., Amosov Alalea, Kia Aleksandr S., Voznesenskii Alan Edward, Tonelli Aleksandr V., Ivanishchev Alan Keith, Hellier Aleksandr V., Shvidchenko Materials 2021, 14, 514 4 of 115 Aleksandr, Klimov Alessandro, Fantoni Aleksandr, Oreshonkov Alessandro, Franco Aleksandr, Pshyk Alessandro, Galenda Aleksandr, Sakhnevych Alessandro, Gambardella Aleksandr, Zinoviev Alessandro, Giorgetti Aleksandra, Drygała Alessandro, Grazzini Aleksandra, Grząbka-Zasadzińska Alessandro, Guastoni Aleksandra, Kostrzanowska-Siedlarz Alessandro, Latini Aleksandra, Krampikowska Alessandro, Martucci Aleksandra, Kuryłowicz-Cudowska Alessandro, Meduri Aleksandra, Palatyńska-Ulatowska Alessandro, Nota Aleksandra, Radtke Alessandro, Patelli Aleksandra, Rybak Alessandro, Pegoretti Aleksandra, Świerczyńska Alessandro, Pistone Aleksandra, Szkudlarek Alessandro, Pratesi Aleksandra, Wajda Alessandro, Tonacci Aleksandra, Zielinska Alessandro, Zona Aleksei V., Almaev Alessia, Artesani Aleksei, Obrosov Alessia, Le Donne Aleksej, Zarkov Alessio, Cascardi Aleksey A., Vedyagin Alessio, Lamperti Aleksey E., Pestov Alessio, Mezzi Aleksey G., Lipnitskii Alessio, Monti Aleksey, Anatolievich Zakharenko Alessio, Silvello Aleksey, Maksimkin Alessio, Verna Aleksey, Rogov Alex Ching Tai, Ng Aleksey, Vishnyakov Alex J., Yuffa Alena, Kalendová Alex M. H., Chau Alena, Michalcová Alex M., Valm Alena, Pietrikova Alex V., Trukhanov Alena, Sičáková Alex, Cordero-Casanovas Alena, Vimmrová Alex, Jordan Alena, Zemanová Alex, Montagne Alenka, Vesel Alexander A., Balandin Aleš, Chvála Alexander A., Gromov Ales, Iglic Alexander Alexandrovich, Lebedev Ales, Mizera Alexander E., Mayer Aleš, Straže Alexander E., Sytschev Alessandra, Fusco Alexander F., Mason Alessandra, Lucchese Alexander G., Tskhovrebov Alessandra, Mobili Alexander M., Gaskov Alessandra, Stacchiotti Alexander M., Korsunsky Alessandro Fraleoni, Morgera Alexander M., Lerer Alessandro P., Fantilli Alexander M., Samoylov Alessandro, Bellucci Alexander M., Volodin Alessandro, Bistolfi Alexander N., Mitropoulos Alessandro, Cavallo Alexander P., Svintsov Alessandro, Ceruti Alexander S., Antonov Alessandro, Chiadò Alexander S., Brand Alessandro, Chiolerio Alexander S., Chaus Alessandro, Di Marco Alexander S., Krylov Materials 2021, 14, 514 5 of 115 Alexander S., Novikov Alexandra, Muñoz-Bonilla Alexander V., Artem’ev Alexandra, Papadopoulou Alexander Yu., Churyumov Alexandra, Pulyalina Alexander Yu., Ivannikov Alexandra, Szczes Alexander Yu., Kuntsevich Alexandra, Zamboulis Alexander, Bakulin Alexandre Cunha, Bastos Alexander, Croy Alexandre, Anesi Alexander, Donchev Alexandre, Vivet Alexander, Efimov Alexandre, Yokochi Alexander, Eliseev Alexandros K., Nikolaidis Alexander, Fedorchenko Alexandru Mihai, Grumezescu Alexander, Gagarin Alexandru, Enesca Alexander, Gottwald Alexandru, Mester Alexander, Hartmaier Alexei N., Suchkov Alexander, Heiß Alexei V., Dub Alexander, Karamanov Alexei, Kuzmin Alexander, Kirillov Alexei, Vinogradov Alexander, Komissarov Alexey A., Tsyganenko Alexander, Laptev Alexey A., Vereshchaka Alexander, Lunt Alexey B., Nadykto Alexander, Malikov Alexey F., Kosolapov Alexander, Marras Alexey G., Kolmakov Alexander, Martin Alexey I., Chizhik Alexander, McLean Alexey L., Glazov Alexander, Morgan Alexey L., Iordanskii Alexander, Obraztsov Alexey N., Kuznetsov Alexander, Ovchinnikov Alexey V., Povolotskiy Alexander, Patselov Alexey, Beskopylny Alexander, Pestov Alexey, Bobrovsky