Refine My Results

Creation Date 

1. Before 1957  (516,026)
2. 1957 To 1973  (857,852)
3. 1974 To 1990  (4,304,210)
4. 1991 To 2008  (10,486,863)
5. After 2008  (20,973,837)
6. More options 

New Records 

1. New From Last Week  (850)
2. New From Last Month  (8,570)
3. New From Last 3 Month  (35,587)
4. More options 

Resource Type 

1. Patents  (32,172,648)
2. Articles  (4,679,855)
3. Conference Proceedings  (87,720)
4. Book Chapters  (78,376)
5. Reports  (63,288)
6. Thesises (postgraduate)  (44,022)
7. Books  (36,133)
8. magazinearticle  (13,247)
9. Reviews  (6,496)
10. Datasets  (5,667)
11. Images  (5,559)
12. Web Resources  (5,513)
13. Newspaper Articles  (2,212)
14. Text Resources  (2,123)
15. Other  (1,345)
16. Videos  (396)
17. References  (215)
18. Journals  (212)
19. Archival Material / Manuscripts  (202)
20. Newsletter Articles  (195)
21. More options 

Subject 

1. Physics  (34,899,560)
2. Counting  (10,775,562)
3. Computing  (10,773,910)
4. Calculating  (10,773,812)
5. Testing  (9,870,301)
6. Measuring  (9,868,132)
7. Electric Digital Data Processing  (6,945,514)
8. Electricity  (6,789,689)
9. Investigating Or Analysing Materials By Determining Theirchemical Or Physical Properties  (3,801,821)
10. Electric Communication Technique  (3,751,839)
11. Optics  (3,451,426)
12. Transporting  (3,331,556)
13. Performing Operations  (3,331,454)
14. Science & Technology  (2,830,231)
15. Holography  (2,729,763)
16. Photography  (2,724,217)
17. Cinematography  (2,722,979)
18. Electrography  (2,722,894)
19. Physical Sciences  (2,547,608)
20. Chemistry  (2,309,931)
21. More options 

Databases 

1. esp@cenet  (32,172,644)
2. ProQuest Central  (1,780,571)
3. ROAD: Directory of Open Access Scholarly Resources  (1,436,250)
4. arXiv.org  (1,379,961)
5. Free E- Journals  (905,897)
6. DOAJ Directory of Open Access Journals  (807,396)
7. IOP Publishing Free Content  (268,070)
8. GFMER Free Medical Journals  (259,286)
9. Hyper Article en Ligne (HAL) (Open Access)  (211,355)
10. PubMed Central  (164,715)
11. Springer Nature OA Free Journals  (141,159)
12. MEDLINE  (101,730)
13. HighWire Press (Free Journals)  (81,407)
14. IOPscience (Open Access)  (70,500)
15. Wiley Online Library Open Access  (68,664)
16. EDP Open  (63,212)
17. Oxford Journals Open Access Collection  (60,657)
18. DTIC STINET  (50,644)
19. DTIC Technical Reports  (50,644)
20. Wiley-Blackwell AGU Digital Library  (48,699)
21. More options 

Language 

1. English  (32,303,647)
2. Chinese  (8,082,389)
3. French  (4,236,160)
4. German  (3,181,194)
5. Japanese  (1,990,917)
6. Korean  (1,450,672)
7. Russian  (355,612)
8. Spanish  (258,680)
9. Portuguese  (151,431)
10. Italian  (82,906)
11. Swedish  (72,908)
12. Danish  (49,514)
13. Dutch  (48,065)
14. Finnish  (47,046)
15. Norwegian  (41,183)
16. Polish  (36,776)
17. Ukrainian  (25,180)
18. Czech  (13,417)
19. Romanian  (12,180)
20. Turkish  (10,478)
21. More options 

Journal Title 

1. Applied Physics Letters  (56,147)
2. Applied Sciences  (58,484)
3. Arxiv  (187,058)
4. arXiv.org  (831,636)
5. Astronomy And Astrophysics  (44,270)
6. Journal Of Applied Physics  (48,873)
7. Journal Of Physics: Conference Series  (60,876)
8. Journal Of Physics. Conference Series  (64,118)
9. Physics Letters. B  (43,956)
10. The Astrophysical Journal  (116,355)
11. More options