Peer review is the driving force of journal development, and reviewers are gatekeepers who ensure that Gels 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 decision was 18 days and the median time to publication was 39 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:
| Aizawa, Takafumi | Lin, Weifeng |
| Ansorena, Eduardo | Liu, Jun |
| Arenillas De La Puente, Ana | Luin, Stefano |
| Ariga, Katsuhiko | Luo, Rongcong |
| Atrei, Andrea | Maeda, Hiroshi |
| Baeza-Romero, Maria Teresa | Maki, Yasuyuki |
| Baldino, Lucia | Manetti, Mirko |
| Barbalinardo, Marianna | Martens, Penny |
| Barbucci, Rolando | Martinez, Inigo |
| Bibire, Nela | Matsusaki, Michiya |
| Bidarra, Sílvia J. | Micutz, Marin |
| Bobis-Wozowicz, Sylwia | Milioto, Stefana |
| Bratskaya, Svetlana | Mobed-Miremadi, Maryam |
| Cao, Yiping | Monte, Giovanni Del |
| Chakraborty, Priyadarshi | Montes-Moran, Miguel A. |
| Chen, Jun | Mozafari, Masoud |
| Chen, Xi-lu | Ninarello, Andrea |
| Cheng, Chih-Chia | Nyström, Gustav |
| Chronopoulou, Laura | Okesola, Babatunde |
| Demitri, Christian | Oya, Yuichi |
| Dhont, Jan K.G. | Papadaki, Aikaterini |
| Donati, Ivan | Paradossi, Gaio |
| Douglas, Timothy | Parale, Vinayak G. |
| Doutch, James | Pedron, Sara |
| Dušková-Smrčková, Miroslava | Petrov, Petar |
| Forest, Greg | Phadtare, Varsha |
| Freisleben, Hans-Joachim | Rankin, Steve |
| Fukuda, Jun-ichi | Ribeiro, Viviana Pinto |
| Gallo, Salvatore | Rusu, Alina Gabriela |
| Gashti, Mazeyar Parvinzadeh | Salamone, Monica |
| Ghazanfari, Lida | Samal, Sangram |
| Ghersi, Giulio | Sasaki, Yuji |
| Ghica, Mariana E. | Scholten, Elke |
| Godzierz, Marcin | Shavandi, Amin |
| Gong, Jin | Shi, Yanshu |
| Gravelle, Andrew | Song, Kenan |
| Gueorguiev, Gueorgui K. | Sosnowski, Marcin |
| Guillaume, Olivier | Sumi, Tomonari |
| Guo, Hui | Tabata, Yasuhiko |
| Gurikov, Pavel | Takigawa, Toshikazu |
| Gutzov, Stoyan | Tamayo, Aitana |
| Hajizadeh, Solmaz | Tey, Siew Ling |
| Hansson, Per | Tomasini, Claudia |
| Hawinkels, Lukas | Tonar, Zbynek |
| He, Weilue | Tyliszczak, Bożena |
| Hirokawa, Yoshitsugu | Velasco, Rebeca Hernandez |
| Horváth, Judit | Volker, Körstgens |
| Hu, Wanhe | Volkova; Natalia |
| Iatrou, Hermis | Wei, Kongchang |
| Jain, Gaurav | Weiss, Richard |
| Jarzebski, Maciej | Wöll, Dominik |
| Kadlubowski, Slawomir | Yamada, Masumi |
| Karoyo, Abdalla H. | Yang, Mijia |
| Ketoja, Jukka | Yang, Zhaogang |
| Koel, Mihkel | Yang, Zhujin |
| Kovačević, Davor | Ylostalo, Joni H. |
| Kuckling, Dirk | Yoshida, Hiroaki |
| Kumar, Anuj | Yuan, Dian |
| Kurganskaya, Inna | Yuhang, Cai |
| Labuta, Jan | Zamocky, Marcel |
| Lim, Jason | Zarzar, Lauren D. |
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