Small Angle X-ray Scattering
Structural analysis of nanostructured systems and molecular organization in solution.
O que é SAXS
Uma técnica de análise avançada
Structural analysis of nanostructured systems and molecular organization in solution.
What sets us apart
We don't hand over a spectrum. We hand over the interpretation.
Any lab can return peaks and numbers. Our report reads the data. Three differences define what we deliver — illustrated below with a real, anonymized case.
Multiple techniques, one integrated report
We don't hand back five loose reports. We cross-reference every technique's results into a single reading — each signal checked against the others — to reach an answer, not a pile of data.
- Contamination investigation — identifying and tracing the source of a foreign species.
- Performance degradation — explaining why a batch behaves outside expectations.
- New supplier validation — proving equivalence before switching.
3 LDPE batches · 4 techniques converge, NMR reveals the difference
In semicrystalline polymer systems, thermomechanical processing variables influence chain conformational dynamics¹. Solid-state NMR resolves chemical environments at the nanometer scale², sensitive to changes not detectable by XRD or FTIR³.
Technical justification anchored in the literature
Every technique choice and every inference in the report is backed by peer-reviewed literature — with citations in the text. The conclusion isn't loose opinion: it's a traceable argument, defensible in an audit and in front of the client.
- Numbered citations linking claim to source
- Official standards and methods referenced per analyte
- Auditable reasoning end to end
Conclusion and expert opinion
The report closes with a clear position, signed by the Principal Investigator: what the data shows, what can't yet be claimed, and the next step. It includes an honest caveat on the limits of inference — what separates a technical opinion from a guess.
- Explicit technical position, not just results
- Inference limits declared honestly
- Next-step recommendation signed by the P.I.
Four techniques confirmed equivalence; only the solid-state NMR revealed the subtle conformational change not distinguishable by conventional QC — a molecular signature consistent with the atypical filtration behavior.
Without the industrial line's parameters, no direct causal correlation can be established — a complementary step is recommended for elucidation.
Aplicações de mercado
Onde a SAXS entrega resultados
Market Applications
Pharma
- Pharmaceutical nanoparticle characterization
- Protein aggregation studies
- Liposome and micelle analysis
- Delivery system structure
- Biopharmaceutical molecular organization
Materials
- Nanocomposite analysis
- Porous material characterization
- Self-organization studies
- Block polymer analysis
- Hybrid material structure
Cosmetics
- Nanoemulsion characterization
- Micellar system analysis
- Cosmetic liposome structure
- Liquid crystal organization
- Skin penetration studies
FAQ
Frequently Asked Questions about Small-Angle X-ray Scattering (SAXS)
What size range and structures can SAXS (Small-Angle X-ray Scattering) probe?
- SAXS is sensitive to structural features roughly between 1 and 100 nanometers, making it well suited to nanoparticles, protein aggregates, liposomes, micelles, and other nanostructured or self-assembled systems within that size window.
Does SAXS require my sample to be crystalline?
- No — unlike X-ray diffraction (XRD), SAXS does not require crystalline order and works equally well on amorphous, disordered or partially ordered nanostructures, since it probes overall size, shape and spatial organization rather than atomic-lattice periodicity.
Can SAXS analyze samples in solution, or only solids?
- SAXS is routinely performed on samples in solution, which is one of its key advantages — it allows nanoparticles, proteins and self-assembled systems to be studied in a near-native, solvated state rather than requiring drying or other preparation that could alter the structure being measured.
How does SAXS compare to dynamic light scattering (DLS) for particle sizing?
- Both measure particles in solution, but SAXS derives size and shape information directly from X-ray scattering intensity as a function of angle, offering more detailed structural information (such as radius of gyration and internal structure) than DLS, which primarily reports a hydrodynamic size based on particle diffusion and is generally faster and lower-cost for simple size distributions.
Is SAXS a destructive technique?
- No — SAXS is non-destructive under standard measurement conditions, and the sample can typically be recovered or reused afterward, though prolonged X-ray exposure should be considered for radiation-sensitive biological samples.
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