矩阵模块 01 · 文献检索
一次检索，更快抵达论文。
把学术来源、仓储路径和 DOI 路由放在同一工作台。优先显示直接 PDF，困难条目进入人工工单。
每位新访客 100 次免费检索
无需注册即可开始，需要更高额度时再申请。
Fewer tabs. Fewer dead ends.
Built for the moment when one database is not enough and the PDF still is not there.
来源覆盖
先找元数据，再验证 PDF。
Metadata
OpenAlex
Crossref
Semantic Scholar
Finds DOI, title, author, journal, year, and citation signals.
Repository PDF
CORE
arXiv
Europe PMC
PubMed Central
Checks repositories, preprints, and open full-text collections for PDF files.
OA Resolver
DOAJ
OpenAIRE
Unpaywall
Verifies open-access status, DOI routes, and legal landing pages.
检索流程
01
Identify the paper
Normalize DOI, title, authors, journal, and citations.
02
Verify open full text
Test repository and OA resolver links before showing a direct PDF.
03
Route hard cases
Unverified PDFs become work orders instead of false downloads.
Ready
Enter a query to begin.