Journal Name	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019
ACS Applied Materials and Interfaces							2.925	4.525	5.008	5.9	6.723	7.145	7.504	8.097	8.456	8.758
ACS Nano					5.472	7.493	9.865	10.774	12.062	12.033	12.881	13.334	13.942	13.709	13.903	14.588
ACS Photonics												5.404	6.756	6.88	7.143	6.864
Advanced Materials	8.079	9.107	7.896	8.191	8.191	8.397	10.88	13.877	14.829	15.409	17.493	18.96	19.791	21.95	25.809	27.398
Advanced Functional Materials	5.679	6.77	6.779	7.496	6.808	6.99	8.508	10.179	9.765	10.439	11.805	11.382	12.124	13.325	15.621	16.836
Analytical Chemistry		5.635	5.646	5.287	5.712	5.214	5.874	5.856	5.695	5.825	5.636	5.886	6.32	6.042	6.35	6.785
Angewandte Chemie-INTERNATIONAL EDITION	9.161	9.596	10.232	10.031	10.879	11.829	12.73	13.455	13.734	11.336	11.261	11.709	11.994	12.102	12.257	12.959
APL Photonics															4.383	4.864
Applied Optics	1.799	1.637	1.717	1.701	1.763	1.41	1.707	1.748	1.689	1.649	1.784	1.598	1.65	1.791	1.973	1.961
Applied Physics A - MATERIALS SCIENCE & PROCESSING	1.452	1.99	1.739	1.857	1.884	1.595	1.765	1.63	1.545	1.694	1.545	1.444	1.455	1.604	1.784	1.81
Applied Physics B - LASERS AND OPTICS	2.215	2.056	2.023	2.28	2.167	1.992	2.24	2.189	1.782	1.634	1.856	1.785	1.696	1.881	1.769	1.817
Applied Physics Express						2.223	2.778	3.013	2.731	2.567	2.365	2.265	2.667	2.555	2.772	3.086
Applied Physics Letters	4.308	4.127	3.977	3.596	3.726	3.554	3.841	3.844	3.794	3.515	3.302	3.142	3.411	3.495	3.521	3.597
Applied Spectroscopy	1.848	1.868	1.879	1.902	2.062	1.564	1.729	1.663	1.942	2.014	1.875	1.798	1.529	1.642	2.064	2.087
Applied Surface Science	1.497	1.263	1.436	1.406	1.576	1.616	1.795	2.103	2.112	2.538	2.711	3.15	3.387	4.439	5.155	6.182
Biophysical Journal	4.585	4.507	4.757	4.627	4.683	4.39	4.218	3.653	3.668	3.832	3.972	3.632	3.656	3.495	3.665	3.854
Chemical Communications		4.426	4.521	5.141	5.34	5.504	5.787	6.169	6.378	6.718	6.834	6.567	6.319	6.29	6.164	5.996
Chemical Reviews	20.233	20.869	26.054	22.757	23.592	35.957	33.036	40.197	41.298	45.661	41.298	37.369	47.928	52.613	54.301	52.758
Chemistry Letters	1.65	1.83	1.734	1.48	1.478	1.46	1.401	1.587	1.594	1.3	1.23	1.55	1.801	1.625	1.485	1.361
Chemistry of Materials	4.103	4.818	5.104	4.883	5.046	5.368	6.4	7.286	8.238	8.535	8.354	9.407	9.466	9.89	10.159	9.567
Chemical Physics Letters	2.438	2.438	2.462	2.207	2.169	2.291	2.282	2.337	2.145	1.991	1.897	1.86	1.815	1.686	1.901	2.029
ChemPhysChem	3.596	3.607	3.449	3.502	3.636	3.453	3.34	3.412	3.349	3.36	3.419	3.138	3.075	2.947	3.077	3.144
Japanese Journal of Applied Physics (JJAP)	1.142	1.096	1.222	1.247	1.309	1.138	1.024	1.058	1.067	1.057	1.127	1.122	1.384	1.452	1.471	1.376
Journal of Applied Physics	2.255	2.498	2.316	2.171	2.201	2.072	2.079	2.168	2.21	2.185	2.183	2.101	2.068	2.176	2.328	2.286
Journal of Biomedical Optics	3.455	3.557	2.87	3.084	2.97	2.501	3.188	3.157	2.881	2.752	2.859	2.556	2.53	2.367	2.555	2.785
Journal of Chemical Physics	3.105	3.138	3.166	3.044	3.149	3.093	2.921	3.333	3.164	3.122	2.952	2.894	2.965	2.843	2.997	2.991
Journal of Luminescence	1.684	1.518	1.441	1.611	1.628	1.847	1.797	2.102	2.144	2.367	2.719	2.693	2.686	2.732	2.961	3.28
Journal of Materials Chemistry > A, B, C	2.721	3.688	4.287	4.339	4.646	4.795	5.101	5.968
Journal of Materials Chemistry A											7.443	8.262	8.867	9.931	10.733	11.301
Journal of Materials Chemistry B											4.726	4.872	4.543	4.776	5.047	5.344
Journal of Materials Chemistry C											4.696	5.066	5.256	5.976	6.641	7.059
Journal of Microscopy (J MICROSC-OXFORD )	1.739	2.095	1.947	1.565	1.409	1.612	1.872	1.631	1.633	2.15	2.331	2.136	1.692	1.693	1.813	1.575
Journal of Optics A - Pure and Applied Optics > Journal of Optics	1.231	1.295	1.604	1.752	1.742	1.198	1.662	1.924
Journal of Optics								1.573	1.99	2.01	2.059	1.847	1.741	2.323	2.753	2.379
Journal of Optics B - Quantum and Semiclassical Optics > Merged with Journal of Physics B	1.746	1.691	1.509	1.813
Journal of Raman Spectroscopy	1.996	1.884	2.133	3.514	3.526	3.147	3.137	3.087	2.679	2.519	2.671	2.395	2.969	2.879	2.809	2
Journal of Photochemistry and Photobiology A - Chemistry	2.235	2.286	2.098	1.911	2.362	2.553	2.243	2.421	2.416	2.291	2.495	2.477	2.625	2.891	3.261	3.306
Journal of Photochemistry and Photobiology B - Biology	1.841	1.597	1.909	1.919	1.838	1.871	2.116	2.814	3.11	2.803	2.96	3.035	2.673	3.165	4.067	4.383
Journal of Photochemistry and Photobiology C - Photochemistry Reviews		8.167	7.32	5.731	5.36	7.952	10.81	10.36	8.069	11.625	16.091	12.162	12.317	15.325	10.405	11.952
Journal of Physical Chemistry A	2.639	2.898	3.047	2.918	2.871	2.899	2.732	2.946	2.771	2.775	2.693	2.883	2.847	2.836	2.641	2.6
Journal of Physical Chemistry B	3.834	4.033	4.115	4.086	4.189	3.471	3.603	3.696	3.607	3.377	3.302	3.187	3.177	3.146	2.923	2.857
Journal of Physical Chemistry C					3.396	4.224	4.524	4.805	4.814	4.835	4.772	4.509	4.536	4.484	4.309	4.189
Journal of Physical Chemistry Letters								6.213	6.585	6.687	7.458	8.539	9.353	8.709	7.329	6.71
Journal of Physics B: Atomic, Molecular and Optical Physics	1.761	1.913	2.024	2.012	2.089	1.91	1.902	1.875	2.031	1.916	1.975	1.833	1.792	2.119	2.115	1.703
Journal of Physics D: Applied Physics	1.642	1.957	2.077	2.2	2.104	2.083	2.109	2.544	2.528	2.521	2.721	2.722	2.588	2.373	2.829	3.169
Journal of the American Chemical Society (JACS)	6.903	7.419	7.696	7.885	8.091	8.58	9.023	9.907	10.677	11.444	12.113	13.038	1.3858	14.357	14.695	14.612
Journal of the Optical Society of America A - OPTICS IMAGE SCIENCE AND VISION (JOSA A)	2.012	1.764	2.002	1.776	1.87	1.67	1.936	1.562	1.665	1.448	1.558	1.457	1.621	1.566	1.861	1.791
Journal of the Optical Society of America B - OPTICAL PHYSICS (JOSA B)	2.649	2.119	2.002	2.03	2.181	2.087	2.097	2.185	2.21	1.806	1.97	1.731	1.843	2.048	2.284	2.18
Laser Physics Letters		1.225	1.225	1.918	3.779	5.502	6.01	9.97	7.714	2.964	2.458	2.391	2.573	2.235	2.328	1.884
Langmuir	3.295	3.705	3.902	4.009	4.097	3.898	4.269	4.186	4.187	4.384	4.457	3.993	3.833	3.789	3.683	3.557
Macromolecular Chemistry and Physics	1.88	2.111	2.021	2.046	2.202	2.57	2.437	2.361	2.386	2.451	2.616	2.495	2.5	2.492	2.622	2.335
Macromolecules	3.898	4.024	4.277	4.411	4.407	4.539	4.838	5.167	5.521	5.927	5.8	5.554	5.835	5.914	5.997	5.918
Molecular Crystals and Liquid Crystals	0.529	0.468	0.478	0.554	0.537	0.451	0.543	0.58	0.53	0.491	0.493	0.532	0.571	0.633	0.559	0.512
Nano Letters	8.449	9.847	9.96	9.627	10.371	9.991	12.219	13.198	13.025	12.94	13.592	13.779	12.712	12.08	12.279	11.238
Nanoscale							4.109	5.914	6.233	6.739	7.394	7.76	7.367	7.233	6.97	6.895
Nanotechnology	3.322	2.993	3.037	3.31	3.446	3.137	3.652	3.979	3.842	3.672	3.821	3.573	3.44	3.404	3.399	3.551
Nature	32.182	29.273	26.681	28.751	31.434	34.48	36.104	36.28	38.597	42.351	41.456	38.138	40.137	41.577	43.07	42.778
Nature Communications								7.396	10.015	10.742	11.47	11.329	12.124	12.353	11.878	12.121
Nature Materials	13.531	15.941	19.194	19.782	23.132	29.504	29.92	32.841	35.749	36.425	36.503	38.891	39.737	39.235	38.887	38.663
Nature Nanotechnology				14.917	20.571	26.309	30.324	27.27	31.17	33.265	34.048	35.267	38.986	37.49	33.407	31.538
Nature Physics			12.04	14.677	16.821	15.491	18.43	18.967	19.352	20.603	20.147	18.791	22.806	22.727	20.113	19.256
Nature Photonics					24.982	22.869	26.506	29.278	27.254	29.958	32.386	31.167	37.852	32.521	31.583	31.241
Optics Communications	1.581	1.456	1.48	1.314	1.552	1.316	1.517	1.486	1.438	1.542	1.449	1.48	1.588	1.887	1.961	2.125
Optics Express	3.797	3.764	4.009	3.709	3.88	3.278	3.753	3.587	3.546	3.525	3.488	3.148	3.307	3.356	3.561	3.669
Optics Letters	3.882	3.599	3.598	3.711	3.772	3.059	3.318	3.399	3.385	3.179	3.292	3.04	3.416	3.589	3.866	3.714
Optical Materials	1.339	1.162	1.709	1.519	1.714	1.728	1.679	2.023	1.918	2.075	1.981	2.183	2.238	2.32	2.687	2.779
Optical Materials Express									2.616	2.923	2.844	2.657	2.591	2.566	2.673	3.064
Optical Review	0.616	0.533	0.576	0.683	0.545	0.529	0.55	0.661	0.702	0.546	0.656	0.496	0.6	0.805	0.868	1.068
OSA Continuum
Plasmonics				2.765	3.488	3.723	3.544	2.989	2.425	2.738	2.238	2.146	2.139	2.366	2.926	2.335
Physical Chemistry Chemical Physics	2.076	2.519	2.892	3.343	4.064	4.116	3.454	3.573	3.829	4.198	4.493	4.449	4.123	3.906	3.567	3.43
Physical Review Letters	7.218	7.489	7.072	6.944	7.18	7.328	7.622	7.37	7.943	7.728	7.512	7.645	8.462	8.839	9.227	8.385
Physical Review A - atomic, molecular, and optical physics	2.902	2.997	3.047	2.893	2.908	2.866	2.861	2.878	3.042	2.991	2.808	2.765	2.925	2.909	2.907	2.777
Physical Review B - condensed matter and materials physics	3.075	3.185	3.107	3.172	3.322	3.475	3.774	3.691	3.767	3.664	3.736	3.718	3.836	3.813	3.736	3.575
Physical Review C - nuclear physics	3.125	3.61	3.327	3.302	3.124	3.477	3.416	3.308	3.715	3.881	3.733	3.146	3.82	3.304	3.132	2.988
Physical Review D - particle, fields, gravitation, and cosmology	5.156	4.852	4.896	4.696	5.05	4.922	4.964	4.558	4.691	4.864	4.643	4.506	4.557	4.394	4.368	4.833
Physical Review E - statistical, nonlinear, and soft matter physics	2.352	2.418	2.438	2.483	2.508	2.4	2.352	2.255	2.313	2.326	2.288	2.252	2.366	2.284	2.353	2.296
Polymer	2.433	2.849	2.773	3.065	3.331	3.573	3.829	3.438	3.379	3.766	3.562	3.586	3.684	3.483	3.771	4.231
Proceedings of the National Academy of Sciences of the United States of America	10.452	10.231	9.643	9.598	9.38	9.432	9.771	9.681	9.737	9.809	9.674	9.423	9.661	9.504	9.58	9.412
Review of Scientific Instruments	1.226	1.235	1.541	1.384	1.738	1.521	1.601	1.367	1.602	1.584	1.614	1.336	1.515	1.428	1.587	1.48
RSC Advances									2.562	3.708	3.84	3.289	3.108	2.936	3.049	3.119
Science	31.853	30.927	30.028	26.372	28.103	29.747	31.377	31.201	31.027	31.477	33.611	34.661	37.205	41.058	41.063	41.845
Science Advances														11.511	12.804	13.116
Scientific Reports									2.927	5.078	5.578	5.228	4.259	4.122	4.011	3.998
Small			6.024	6.408	6.525	6.171	7.336	8.349	7.823	7.514	8.368	8.315	8.643	9.598	10.856	11.459
Synthetic Metals	1.278	1.32	1.685	1.788	1.962	1.901	1.871	1.829	2.109	2.222	2.252	2.299	2.435	2.526	2.87	3.286
Thin Solid Films	1.647	1.569	1.666	1.693	1.884	1.727	1.935	1.89	1.604	1.867	1.759	1.761	1.879	1.939	1.888	2.03
Ultramicroscopy	2.215	2.49	1.706	1.996	2.629	2.067	2.063	2.471	2.47	2.745	2.436	2.874	2.843	2.929	2.644	2.452